diff --git a/boards/arm/a1x/pcduino-a10/scripts/Make.defs b/boards/arm/a1x/pcduino-a10/scripts/Make.defs
index a38c5f053f4..4b048246b21 100644
--- a/boards/arm/a1x/pcduino-a10/scripts/Make.defs
+++ b/boards/arm/a1x/pcduino-a10/scripts/Make.defs
@@ -109,11 +109,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/am335x/beaglebone-black/scripts/Make.defs b/boards/arm/am335x/beaglebone-black/scripts/Make.defs
index c9e87eeb084..e5b7b321b75 100644
--- a/boards/arm/am335x/beaglebone-black/scripts/Make.defs
+++ b/boards/arm/am335x/beaglebone-black/scripts/Make.defs
@@ -45,13 +45,11 @@ LDSCRIPT = sdram.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/c5471/c5471evm/scripts/Make.defs b/boards/arm/c5471/c5471evm/scripts/Make.defs
index 655fd33ca8a..ec9f2709134 100644
--- a/boards/arm/c5471/c5471evm/scripts/Make.defs
+++ b/boards/arm/c5471/c5471evm/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/arm/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/cxd56xx/spresense/scripts/Make.defs b/boards/arm/cxd56xx/spresense/scripts/Make.defs
index 96d8dfc7afa..d37a96c9746 100644
--- a/boards/arm/cxd56xx/spresense/scripts/Make.defs
+++ b/boards/arm/cxd56xx/spresense/scripts/Make.defs
@@ -44,13 +44,11 @@ LDSCRIPT = ramconfig.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/dm320/ntosd-dm320/scripts/Make.defs b/boards/arm/dm320/ntosd-dm320/scripts/Make.defs
index c04edb1fbf9..e1baad05f87 100644
--- a/boards/arm/dm320/ntosd-dm320/scripts/Make.defs
+++ b/boards/arm/dm320/ntosd-dm320/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/arm/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/sdram.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/sdram.ld
diff --git a/boards/arm/efm32/efm32-g8xx-stk/scripts/Make.defs b/boards/arm/efm32/efm32-g8xx-stk/scripts/Make.defs
index bd763857d00..4294a9e5c90 100644
--- a/boards/arm/efm32/efm32-g8xx-stk/scripts/Make.defs
+++ b/boards/arm/efm32/efm32-g8xx-stk/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = efm32-g8xx-stk.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/efm32/efm32gg-stk3700/scripts/Make.defs b/boards/arm/efm32/efm32gg-stk3700/scripts/Make.defs
index c0fcbd99dbd..db20b20f45c 100644
--- a/boards/arm/efm32/efm32gg-stk3700/scripts/Make.defs
+++ b/boards/arm/efm32/efm32gg-stk3700/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/efm32/olimex-efm32g880f128-stk/scripts/Make.defs b/boards/arm/efm32/olimex-efm32g880f128-stk/scripts/Make.defs
index 75ef586a0b3..84175c66d44 100644
--- a/boards/arm/efm32/olimex-efm32g880f128-stk/scripts/Make.defs
+++ b/boards/arm/efm32/olimex-efm32g880f128-stk/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/imx6/sabre-6quad/scripts/Make.defs b/boards/arm/imx6/sabre-6quad/scripts/Make.defs
index 6665c39b8d0..5e29d4dbd72 100644
--- a/boards/arm/imx6/sabre-6quad/scripts/Make.defs
+++ b/boards/arm/imx6/sabre-6quad/scripts/Make.defs
@@ -124,11 +124,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/imxrt/imxrt1020-evk/scripts/Make.defs b/boards/arm/imxrt/imxrt1020-evk/scripts/Make.defs
index 49abd683725..613fb00dfc2 100644
--- a/boards/arm/imxrt/imxrt1020-evk/scripts/Make.defs
+++ b/boards/arm/imxrt/imxrt1020-evk/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/imxrt/imxrt1050-evk/configs/knsh/Make.defs b/boards/arm/imxrt/imxrt1050-evk/configs/knsh/Make.defs
index 6639bd13c9d..56eec6970d4 100644
--- a/boards/arm/imxrt/imxrt1050-evk/configs/knsh/Make.defs
+++ b/boards/arm/imxrt/imxrt1050-evk/configs/knsh/Make.defs
@@ -42,14 +42,12 @@ LDSCRIPT2 = kernel-space.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT1)}"
   ARCHSCRIPT += -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT2)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT1)
diff --git a/boards/arm/imxrt/imxrt1050-evk/configs/libcxxtest/Make.defs b/boards/arm/imxrt/imxrt1050-evk/configs/libcxxtest/Make.defs
index e85df5440de..e0b8bed84b4 100644
--- a/boards/arm/imxrt/imxrt1050-evk/configs/libcxxtest/Make.defs
+++ b/boards/arm/imxrt/imxrt1050-evk/configs/libcxxtest/Make.defs
@@ -63,13 +63,11 @@ EXTRA_LIBS = -lsupc++
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx -isystem $(TOPDIR)/include/libcxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/imxrt/imxrt1050-evk/scripts/Make.defs b/boards/arm/imxrt/imxrt1050-evk/scripts/Make.defs
index 3bdad163f7d..9deb925bc72 100644
--- a/boards/arm/imxrt/imxrt1050-evk/scripts/Make.defs
+++ b/boards/arm/imxrt/imxrt1050-evk/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/imxrt/imxrt1060-evk/configs/knsh/Make.defs b/boards/arm/imxrt/imxrt1060-evk/configs/knsh/Make.defs
index 2c4b47e2764..0e4059da502 100644
--- a/boards/arm/imxrt/imxrt1060-evk/configs/knsh/Make.defs
+++ b/boards/arm/imxrt/imxrt1060-evk/configs/knsh/Make.defs
@@ -42,14 +42,12 @@ LDSCRIPT2 = kernel-space.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT1)}"
   ARCHSCRIPT += -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT2)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT1)
diff --git a/boards/arm/imxrt/imxrt1060-evk/configs/libcxxtest/Make.defs b/boards/arm/imxrt/imxrt1060-evk/configs/libcxxtest/Make.defs
index 4dbcba4d9f7..19507c35702 100644
--- a/boards/arm/imxrt/imxrt1060-evk/configs/libcxxtest/Make.defs
+++ b/boards/arm/imxrt/imxrt1060-evk/configs/libcxxtest/Make.defs
@@ -63,13 +63,11 @@ EXTRA_LIBS = -lsupc++
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx -isystem $(TOPDIR)/include/libcxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/imxrt/imxrt1060-evk/scripts/Make.defs b/boards/arm/imxrt/imxrt1060-evk/scripts/Make.defs
index 90f36e4c9cc..c03ac39cf54 100644
--- a/boards/arm/imxrt/imxrt1060-evk/scripts/Make.defs
+++ b/boards/arm/imxrt/imxrt1060-evk/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/kinetis/freedom-k28f/scripts/Make.defs b/boards/arm/kinetis/freedom-k28f/scripts/Make.defs
index 8d8f939be8d..568543f3c02 100644
--- a/boards/arm/kinetis/freedom-k28f/scripts/Make.defs
+++ b/boards/arm/kinetis/freedom-k28f/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/kinetis/freedom-k64f/scripts/Make.defs b/boards/arm/kinetis/freedom-k64f/scripts/Make.defs
index 8b8602d154d..6e390d0830d 100644
--- a/boards/arm/kinetis/freedom-k64f/scripts/Make.defs
+++ b/boards/arm/kinetis/freedom-k64f/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/flash.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/flash.ld
diff --git a/boards/arm/kinetis/freedom-k66f/scripts/Make.defs b/boards/arm/kinetis/freedom-k66f/scripts/Make.defs
index 00d3e4cc11a..fa5e4cbd834 100644
--- a/boards/arm/kinetis/freedom-k66f/scripts/Make.defs
+++ b/boards/arm/kinetis/freedom-k66f/scripts/Make.defs
@@ -40,13 +40,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/flash.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/flash.ld
diff --git a/boards/arm/kinetis/kwikstik-k40/scripts/Make.defs b/boards/arm/kinetis/kwikstik-k40/scripts/Make.defs
index bee198e69d7..5c094f5712c 100644
--- a/boards/arm/kinetis/kwikstik-k40/scripts/Make.defs
+++ b/boards/arm/kinetis/kwikstik-k40/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/kwikstik-k40.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/kwikstik-k40.ld
diff --git a/boards/arm/kinetis/teensy-3.x/scripts/Make.defs b/boards/arm/kinetis/teensy-3.x/scripts/Make.defs
index 6e38e4ee21f..df39e0ca4a7 100644
--- a/boards/arm/kinetis/teensy-3.x/scripts/Make.defs
+++ b/boards/arm/kinetis/teensy-3.x/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/kinetis/twr-k60n512/scripts/Make.defs b/boards/arm/kinetis/twr-k60n512/scripts/Make.defs
index 6d8e188e315..f053bd1000d 100644
--- a/boards/arm/kinetis/twr-k60n512/scripts/Make.defs
+++ b/boards/arm/kinetis/twr-k60n512/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/twr-k60n512.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/twr-k60n512.ld
diff --git a/boards/arm/kinetis/twr-k64f120m/scripts/Make.defs b/boards/arm/kinetis/twr-k64f120m/scripts/Make.defs
index e43780fd889..496a7400922 100644
--- a/boards/arm/kinetis/twr-k64f120m/scripts/Make.defs
+++ b/boards/arm/kinetis/twr-k64f120m/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/kl/freedom-kl25z/scripts/Make.defs b/boards/arm/kl/freedom-kl25z/scripts/Make.defs
index 683a7863d78..27c583d9d1b 100644
--- a/boards/arm/kl/freedom-kl25z/scripts/Make.defs
+++ b/boards/arm/kl/freedom-kl25z/scripts/Make.defs
@@ -102,7 +102,6 @@ ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS += -g
 endif
 
-
 HOSTCC = gcc
 HOSTINCLUDES = -I.
 HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
@@ -112,11 +111,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/kl/freedom-kl26z/scripts/Make.defs b/boards/arm/kl/freedom-kl26z/scripts/Make.defs
index 5897e360a6c..00510934c2e 100644
--- a/boards/arm/kl/freedom-kl26z/scripts/Make.defs
+++ b/boards/arm/kl/freedom-kl26z/scripts/Make.defs
@@ -102,7 +102,6 @@ ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS += -g
 endif
 
-
 HOSTCC = gcc
 HOSTINCLUDES = -I.
 HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
@@ -112,11 +111,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/kl/teensy-lc/scripts/Make.defs b/boards/arm/kl/teensy-lc/scripts/Make.defs
index 8591e095685..c5e4f0c8593 100644
--- a/boards/arm/kl/teensy-lc/scripts/Make.defs
+++ b/boards/arm/kl/teensy-lc/scripts/Make.defs
@@ -112,11 +112,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/lc823450/lc823450-xgevk/scripts/Make.defs b/boards/arm/lc823450/lc823450-xgevk/scripts/Make.defs
index 0ff51ef6621..861e9b75b3a 100644
--- a/boards/arm/lc823450/lc823450-xgevk/scripts/Make.defs
+++ b/boards/arm/lc823450/lc823450-xgevk/scripts/Make.defs
@@ -49,13 +49,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/lpc17xx_40xx/lincoln60/scripts/Make.defs b/boards/arm/lpc17xx_40xx/lincoln60/scripts/Make.defs
index e793eb4647a..84ef3955f1d 100644
--- a/boards/arm/lpc17xx_40xx/lincoln60/scripts/Make.defs
+++ b/boards/arm/lpc17xx_40xx/lincoln60/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/lpc17xx_40xx/lpc4088-devkit/configs/knsh/Make.defs b/boards/arm/lpc17xx_40xx/lpc4088-devkit/configs/knsh/Make.defs
index ca2bf09a74e..dbefda70d86 100644
--- a/boards/arm/lpc17xx_40xx/lpc4088-devkit/configs/knsh/Make.defs
+++ b/boards/arm/lpc17xx_40xx/lpc4088-devkit/configs/knsh/Make.defs
@@ -39,14 +39,12 @@ include ${TOPDIR}$(DELIM)arch$(DELIM)arm$(DELIM)src$(DELIM)armv7-m$(DELIM)Toolch
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}" -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include$(DELIM)cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld}"
   ARCHSCRIPT += -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)kernel-space.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include -isystem $(TOPDIR)$(DELIM)include$(DELIM)cxx
   ARCHSCRIPT = -T$(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld
diff --git a/boards/arm/lpc17xx_40xx/lpc4088-devkit/scripts/Make.defs b/boards/arm/lpc17xx_40xx/lpc4088-devkit/scripts/Make.defs
index ccb4f590940..b888c1091b0 100644
--- a/boards/arm/lpc17xx_40xx/lpc4088-devkit/scripts/Make.defs
+++ b/boards/arm/lpc17xx_40xx/lpc4088-devkit/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}$(DELIM)arch$(DELIM)arm$(DELIM)src$(DELIM)armv7-m$(DELIM)Toolch
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}" -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include$(DELIM)cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include -isystem $(TOPDIR)$(DELIM)include$(DELIM)cxx
   ARCHSCRIPT = -T$(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)ld.script
diff --git a/boards/arm/lpc17xx_40xx/lpc4088-quickstart/configs/knsh/Make.defs b/boards/arm/lpc17xx_40xx/lpc4088-quickstart/configs/knsh/Make.defs
index 7de6daa7f68..3f765c7a55d 100644
--- a/boards/arm/lpc17xx_40xx/lpc4088-quickstart/configs/knsh/Make.defs
+++ b/boards/arm/lpc17xx_40xx/lpc4088-quickstart/configs/knsh/Make.defs
@@ -39,14 +39,12 @@ include ${TOPDIR}$(DELIM)arch$(DELIM)arm$(DELIM)src$(DELIM)armv7-m$(DELIM)Toolch
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}" -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include$(DELIM)cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld}"
   ARCHSCRIPT += -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)kernel-space.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include -isystem $(TOPDIR)$(DELIM)include$(DELIM)cxx
   ARCHSCRIPT = -T$(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld
diff --git a/boards/arm/lpc17xx_40xx/lpc4088-quickstart/scripts/Make.defs b/boards/arm/lpc17xx_40xx/lpc4088-quickstart/scripts/Make.defs
index 19e44d3981f..93ea71dc2cd 100644
--- a/boards/arm/lpc17xx_40xx/lpc4088-quickstart/scripts/Make.defs
+++ b/boards/arm/lpc17xx_40xx/lpc4088-quickstart/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}$(DELIM)arch$(DELIM)arm$(DELIM)src$(DELIM)armv7-m$(DELIM)Toolch
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}" -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include$(DELIM)cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include -isystem $(TOPDIR)$(DELIM)include$(DELIM)cxx
   ARCHSCRIPT = -T$(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)ld.script
diff --git a/boards/arm/lpc17xx_40xx/lpcxpresso-lpc1768/configs/thttpd/Make.defs b/boards/arm/lpc17xx_40xx/lpcxpresso-lpc1768/configs/thttpd/Make.defs
index 498fe6bb3dd..793648e7fc6 100644
--- a/boards/arm/lpc17xx_40xx/lpcxpresso-lpc1768/configs/thttpd/Make.defs
+++ b/boards/arm/lpc17xx_40xx/lpcxpresso-lpc1768/configs/thttpd/Make.defs
@@ -39,14 +39,12 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
   NXFLATLDSCRIPT = -T "${shell cygpath -w $(TOPDIR)/binfmt/libnxflat/gnu-nxflat-gotoff.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/lpc17xx_40xx/lpcxpresso-lpc1768/scripts/Make.defs b/boards/arm/lpc17xx_40xx/lpcxpresso-lpc1768/scripts/Make.defs
index 692bd4b186f..eae5834b74d 100644
--- a/boards/arm/lpc17xx_40xx/lpcxpresso-lpc1768/scripts/Make.defs
+++ b/boards/arm/lpc17xx_40xx/lpcxpresso-lpc1768/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/lpc17xx_40xx/lx_cpu/scripts/Make.defs b/boards/arm/lpc17xx_40xx/lx_cpu/scripts/Make.defs
index d7514b4c85c..11ff9dac0d3 100644
--- a/boards/arm/lpc17xx_40xx/lx_cpu/scripts/Make.defs
+++ b/boards/arm/lpc17xx_40xx/lx_cpu/scripts/Make.defs
@@ -51,13 +51,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}" -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include$(DELIM)cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include -isystem $(TOPDIR)$(DELIM)include$(DELIM)cxx
   ARCHSCRIPT = -T$(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
diff --git a/boards/arm/lpc17xx_40xx/mbed/scripts/Make.defs b/boards/arm/lpc17xx_40xx/mbed/scripts/Make.defs
index 589b65484a6..7ebca3d75c9 100644
--- a/boards/arm/lpc17xx_40xx/mbed/scripts/Make.defs
+++ b/boards/arm/lpc17xx_40xx/mbed/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/lpc17xx_40xx/mcb1700/scripts/Make.defs b/boards/arm/lpc17xx_40xx/mcb1700/scripts/Make.defs
index f36557d5487..db1b34f3073 100644
--- a/boards/arm/lpc17xx_40xx/mcb1700/scripts/Make.defs
+++ b/boards/arm/lpc17xx_40xx/mcb1700/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/lpc17xx_40xx/olimex-lpc1766stk/configs/thttpd-binfs/Make.defs b/boards/arm/lpc17xx_40xx/olimex-lpc1766stk/configs/thttpd-binfs/Make.defs
index 20b6e746e2b..a0b2a7967c6 100644
--- a/boards/arm/lpc17xx_40xx/olimex-lpc1766stk/configs/thttpd-binfs/Make.defs
+++ b/boards/arm/lpc17xx_40xx/olimex-lpc1766stk/configs/thttpd-binfs/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/lpc17xx_40xx/olimex-lpc1766stk/configs/thttpd-nxflat/Make.defs b/boards/arm/lpc17xx_40xx/olimex-lpc1766stk/configs/thttpd-nxflat/Make.defs
index f4ca73bc561..0011b6ef01a 100644
--- a/boards/arm/lpc17xx_40xx/olimex-lpc1766stk/configs/thttpd-nxflat/Make.defs
+++ b/boards/arm/lpc17xx_40xx/olimex-lpc1766stk/configs/thttpd-nxflat/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/lpc17xx_40xx/olimex-lpc1766stk/scripts/Make.defs b/boards/arm/lpc17xx_40xx/olimex-lpc1766stk/scripts/Make.defs
index e74aa9c5d74..491ab98665f 100644
--- a/boards/arm/lpc17xx_40xx/olimex-lpc1766stk/scripts/Make.defs
+++ b/boards/arm/lpc17xx_40xx/olimex-lpc1766stk/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/lpc17xx_40xx/open1788/configs/knsh/Make.defs b/boards/arm/lpc17xx_40xx/open1788/configs/knsh/Make.defs
index e18da2b6fbc..b0fa04e5274 100644
--- a/boards/arm/lpc17xx_40xx/open1788/configs/knsh/Make.defs
+++ b/boards/arm/lpc17xx_40xx/open1788/configs/knsh/Make.defs
@@ -39,14 +39,12 @@ include ${TOPDIR}$(DELIM)arch$(DELIM)arm$(DELIM)src$(DELIM)armv7-m$(DELIM)Toolch
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}" -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include$(DELIM)cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld}"
   ARCHSCRIPT += -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)kernel-space.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include -isystem $(TOPDIR)$(DELIM)include$(DELIM)cxx
   ARCHSCRIPT = -T$(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld
diff --git a/boards/arm/lpc17xx_40xx/open1788/configs/knxterm/Make.defs b/boards/arm/lpc17xx_40xx/open1788/configs/knxterm/Make.defs
index 2860db8bdcf..c5a380deac0 100644
--- a/boards/arm/lpc17xx_40xx/open1788/configs/knxterm/Make.defs
+++ b/boards/arm/lpc17xx_40xx/open1788/configs/knxterm/Make.defs
@@ -39,14 +39,12 @@ include ${TOPDIR}$(DELIM)arch$(DELIM)arm$(DELIM)src$(DELIM)armv7-m$(DELIM)Toolch
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}" -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include$(DELIM)cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld}"
   ARCHSCRIPT += -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)kernel-space.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include -isystem $(TOPDIR)$(DELIM)include$(DELIM)cxx
   ARCHSCRIPT = -T$(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld
diff --git a/boards/arm/lpc17xx_40xx/open1788/scripts/Make.defs b/boards/arm/lpc17xx_40xx/open1788/scripts/Make.defs
index a45be28b5f9..19265014c6e 100644
--- a/boards/arm/lpc17xx_40xx/open1788/scripts/Make.defs
+++ b/boards/arm/lpc17xx_40xx/open1788/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}$(DELIM)arch$(DELIM)arm$(DELIM)src$(DELIM)armv7-m$(DELIM)Toolch
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}" -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include$(DELIM)cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include -isystem $(TOPDIR)$(DELIM)include$(DELIM)cxx
   ARCHSCRIPT = -T$(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)ld.script
diff --git a/boards/arm/lpc17xx_40xx/pnev5180b/configs/knsh/Make.defs b/boards/arm/lpc17xx_40xx/pnev5180b/configs/knsh/Make.defs
index 2a954f0ab5c..3eac3b8cda9 100644
--- a/boards/arm/lpc17xx_40xx/pnev5180b/configs/knsh/Make.defs
+++ b/boards/arm/lpc17xx_40xx/pnev5180b/configs/knsh/Make.defs
@@ -44,14 +44,12 @@ include ${TOPDIR}$(DELIM)arch$(DELIM)arm$(DELIM)src$(DELIM)armv7-m$(DELIM)Toolch
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}" -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include$(DELIM)cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld}"
   ARCHSCRIPT += -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)kernel-space.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include -isystem $(TOPDIR)$(DELIM)include$(DELIM)cxx
   ARCHSCRIPT = -T$(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld
diff --git a/boards/arm/lpc17xx_40xx/pnev5180b/scripts/Make.defs b/boards/arm/lpc17xx_40xx/pnev5180b/scripts/Make.defs
index 2c691f4bf08..746223f4f07 100644
--- a/boards/arm/lpc17xx_40xx/pnev5180b/scripts/Make.defs
+++ b/boards/arm/lpc17xx_40xx/pnev5180b/scripts/Make.defs
@@ -45,13 +45,11 @@ include ${TOPDIR}$(DELIM)arch$(DELIM)arm$(DELIM)src$(DELIM)armv7-m$(DELIM)Toolch
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}" -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include$(DELIM)cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)flash.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include -isystem $(TOPDIR)$(DELIM)include$(DELIM)cxx
   ARCHSCRIPT = -T$(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)flash.ld
diff --git a/boards/arm/lpc17xx_40xx/u-blox-c027/scripts/Make.defs b/boards/arm/lpc17xx_40xx/u-blox-c027/scripts/Make.defs
index e9ca5c6febf..9807ff67d30 100644
--- a/boards/arm/lpc17xx_40xx/u-blox-c027/scripts/Make.defs
+++ b/boards/arm/lpc17xx_40xx/u-blox-c027/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mknulldeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/u-blox-c027.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/u-blox-c027.ld
diff --git a/boards/arm/lpc17xx_40xx/zkit-arm-1769/scripts/Make.defs b/boards/arm/lpc17xx_40xx/zkit-arm-1769/scripts/Make.defs
index b045ce69abd..05defcb1ced 100644
--- a/boards/arm/lpc17xx_40xx/zkit-arm-1769/scripts/Make.defs
+++ b/boards/arm/lpc17xx_40xx/zkit-arm-1769/scripts/Make.defs
@@ -45,14 +45,12 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
   NXFLATLDSCRIPT = -T "${shell cygpath -w $(TOPDIR)/binfmt/libnxflat/gnu-nxflat-gotoff.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/lpc214x/mcu123-lpc214x/scripts/Make.defs b/boards/arm/lpc214x/mcu123-lpc214x/scripts/Make.defs
index 13affa4e91d..eae236975a7 100644
--- a/boards/arm/lpc214x/mcu123-lpc214x/scripts/Make.defs
+++ b/boards/arm/lpc214x/mcu123-lpc214x/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/arm/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/lpc214x/zp214xpa/scripts/Make.defs b/boards/arm/lpc214x/zp214xpa/scripts/Make.defs
index e4b837349c2..bbdd5ad2bde 100644
--- a/boards/arm/lpc214x/zp214xpa/scripts/Make.defs
+++ b/boards/arm/lpc214x/zp214xpa/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/arm/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/lpc2378/olimex-lpc2378/scripts/Make.defs b/boards/arm/lpc2378/olimex-lpc2378/scripts/Make.defs
index 8be21900c56..b2ed4f81840 100644
--- a/boards/arm/lpc2378/olimex-lpc2378/scripts/Make.defs
+++ b/boards/arm/lpc2378/olimex-lpc2378/scripts/Make.defs
@@ -44,13 +44,11 @@ include ${TOPDIR}/arch/arm/src/arm/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/lpc31xx/ea3131/configs/pgnsh/Make.defs b/boards/arm/lpc31xx/ea3131/configs/pgnsh/Make.defs
index bddf01739e0..8e7a3906588 100644
--- a/boards/arm/lpc31xx/ea3131/configs/pgnsh/Make.defs
+++ b/boards/arm/lpc31xx/ea3131/configs/pgnsh/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/arm/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/pg-ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/pg-ld.script
diff --git a/boards/arm/lpc31xx/ea3131/scripts/Make.defs b/boards/arm/lpc31xx/ea3131/scripts/Make.defs
index 55dbbd640d1..d3660f01a13 100644
--- a/boards/arm/lpc31xx/ea3131/scripts/Make.defs
+++ b/boards/arm/lpc31xx/ea3131/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/arm/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/lpc31xx/ea3152/scripts/Make.defs b/boards/arm/lpc31xx/ea3152/scripts/Make.defs
index ed2ae9c0b44..d10ea91f5c9 100644
--- a/boards/arm/lpc31xx/ea3152/scripts/Make.defs
+++ b/boards/arm/lpc31xx/ea3152/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/arm/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ea3152.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ea3152.ld
diff --git a/boards/arm/lpc31xx/olimex-lpc-h3131/scripts/Make.defs b/boards/arm/lpc31xx/olimex-lpc-h3131/scripts/Make.defs
index 523c89c1733..17f8d798cd4 100644
--- a/boards/arm/lpc31xx/olimex-lpc-h3131/scripts/Make.defs
+++ b/boards/arm/lpc31xx/olimex-lpc-h3131/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/arm/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/lpc43xx/bambino-200e/configs/netnsh/Make.defs b/boards/arm/lpc43xx/bambino-200e/configs/netnsh/Make.defs
index fe83ea5f7e8..c04beabb617 100644
--- a/boards/arm/lpc43xx/bambino-200e/configs/netnsh/Make.defs
+++ b/boards/arm/lpc43xx/bambino-200e/configs/netnsh/Make.defs
@@ -61,7 +61,6 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" \
     -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}" \
@@ -69,7 +68,6 @@ ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include \
     -isystem $(TOPDIR)/include/cxx -isystem $(TOPDIR)/include/libcxx
diff --git a/boards/arm/lpc43xx/bambino-200e/scripts/Make.defs b/boards/arm/lpc43xx/bambino-200e/scripts/Make.defs
index 60f4f0d2a17..21b4bab1467 100644
--- a/boards/arm/lpc43xx/bambino-200e/scripts/Make.defs
+++ b/boards/arm/lpc43xx/bambino-200e/scripts/Make.defs
@@ -60,13 +60,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/lpc43xx/lpc4330-xplorer/scripts/Make.defs b/boards/arm/lpc43xx/lpc4330-xplorer/scripts/Make.defs
index fbb5047210f..f815ef59c72 100644
--- a/boards/arm/lpc43xx/lpc4330-xplorer/scripts/Make.defs
+++ b/boards/arm/lpc43xx/lpc4330-xplorer/scripts/Make.defs
@@ -59,13 +59,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/lpc43xx/lpc4337-ws/scripts/Make.defs b/boards/arm/lpc43xx/lpc4337-ws/scripts/Make.defs
index 1d9727b4f98..4e4daa2cefd 100644
--- a/boards/arm/lpc43xx/lpc4337-ws/scripts/Make.defs
+++ b/boards/arm/lpc43xx/lpc4337-ws/scripts/Make.defs
@@ -59,13 +59,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/lpc43xx/lpc4357-evb/scripts/Make.defs b/boards/arm/lpc43xx/lpc4357-evb/scripts/Make.defs
index 9fc5124ccf2..22636117b80 100644
--- a/boards/arm/lpc43xx/lpc4357-evb/scripts/Make.defs
+++ b/boards/arm/lpc43xx/lpc4357-evb/scripts/Make.defs
@@ -59,13 +59,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/lpc43xx/lpc4370-link2/scripts/Make.defs b/boards/arm/lpc43xx/lpc4370-link2/scripts/Make.defs
index 752a409b1af..908a84c2fe0 100644
--- a/boards/arm/lpc43xx/lpc4370-link2/scripts/Make.defs
+++ b/boards/arm/lpc43xx/lpc4370-link2/scripts/Make.defs
@@ -59,13 +59,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/lpc54xx/lpcxpresso-lpc54628/scripts/Make.defs b/boards/arm/lpc54xx/lpcxpresso-lpc54628/scripts/Make.defs
index 0d17b7b517c..1f45df520d5 100644
--- a/boards/arm/lpc54xx/lpcxpresso-lpc54628/scripts/Make.defs
+++ b/boards/arm/lpc54xx/lpcxpresso-lpc54628/scripts/Make.defs
@@ -45,13 +45,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/max326xx/max32660-evsys/scripts/Make.defs b/boards/arm/max326xx/max32660-evsys/scripts/Make.defs
index 38d4b5fe4f8..f70d22553f0 100644
--- a/boards/arm/max326xx/max32660-evsys/scripts/Make.defs
+++ b/boards/arm/max326xx/max32660-evsys/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/moxart/moxa/scripts/Make.defs b/boards/arm/moxart/moxa/scripts/Make.defs
index a5c01126d80..1cf66da3cd8 100644
--- a/boards/arm/moxart/moxa/scripts/Make.defs
+++ b/boards/arm/moxart/moxa/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/moxa.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/moxa.ld
diff --git a/boards/arm/nrf52/nrf52-feather/scripts/Make.defs b/boards/arm/nrf52/nrf52-feather/scripts/Make.defs
index d2c34a19898..65d2dd44b95 100644
--- a/boards/arm/nrf52/nrf52-feather/scripts/Make.defs
+++ b/boards/arm/nrf52/nrf52-feather/scripts/Make.defs
@@ -43,13 +43,11 @@ LDSCRIPT = flash_config.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/nrf52/nrf52832-dk/scripts/Make.defs b/boards/arm/nrf52/nrf52832-dk/scripts/Make.defs
index 9b92040fee0..c8303e1b5e7 100644
--- a/boards/arm/nrf52/nrf52832-dk/scripts/Make.defs
+++ b/boards/arm/nrf52/nrf52832-dk/scripts/Make.defs
@@ -43,13 +43,11 @@ LDSCRIPT = flash_config.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/nrf52/nrf52840-dk/scripts/Make.defs b/boards/arm/nrf52/nrf52840-dk/scripts/Make.defs
index 64f3a6b3aad..91add2880a1 100644
--- a/boards/arm/nrf52/nrf52840-dk/scripts/Make.defs
+++ b/boards/arm/nrf52/nrf52840-dk/scripts/Make.defs
@@ -43,13 +43,11 @@ LDSCRIPT = flash_config.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/nrf52/nrf52840-dongle/scripts/Make.defs b/boards/arm/nrf52/nrf52840-dongle/scripts/Make.defs
index f98a554eb33..afdb7b84d85 100644
--- a/boards/arm/nrf52/nrf52840-dongle/scripts/Make.defs
+++ b/boards/arm/nrf52/nrf52840-dongle/scripts/Make.defs
@@ -43,13 +43,11 @@ LDSCRIPT = flash_config.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/nuc1xx/nutiny-nuc120/scripts/Make.defs b/boards/arm/nuc1xx/nutiny-nuc120/scripts/Make.defs
index 797c372617d..2104d93c1af 100644
--- a/boards/arm/nuc1xx/nutiny-nuc120/scripts/Make.defs
+++ b/boards/arm/nuc1xx/nutiny-nuc120/scripts/Make.defs
@@ -112,11 +112,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/s32k1xx/rddrone-uavcan144/scripts/Make.defs b/boards/arm/s32k1xx/rddrone-uavcan144/scripts/Make.defs
index cf7c0b947a1..834b1dbe356 100644
--- a/boards/arm/s32k1xx/rddrone-uavcan144/scripts/Make.defs
+++ b/boards/arm/s32k1xx/rddrone-uavcan144/scripts/Make.defs
@@ -119,11 +119,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/s32k1xx/rddrone-uavcan146/scripts/Make.defs b/boards/arm/s32k1xx/rddrone-uavcan146/scripts/Make.defs
index 109061e02c2..145ed6553be 100644
--- a/boards/arm/s32k1xx/rddrone-uavcan146/scripts/Make.defs
+++ b/boards/arm/s32k1xx/rddrone-uavcan146/scripts/Make.defs
@@ -119,11 +119,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/s32k1xx/s32k118evb/scripts/Make.defs b/boards/arm/s32k1xx/s32k118evb/scripts/Make.defs
index 53737314cc3..77b6aa8a76b 100644
--- a/boards/arm/s32k1xx/s32k118evb/scripts/Make.defs
+++ b/boards/arm/s32k1xx/s32k118evb/scripts/Make.defs
@@ -112,11 +112,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/s32k1xx/s32k144evb/scripts/Make.defs b/boards/arm/s32k1xx/s32k144evb/scripts/Make.defs
index a2f51f02709..1bef9423ca3 100644
--- a/boards/arm/s32k1xx/s32k144evb/scripts/Make.defs
+++ b/boards/arm/s32k1xx/s32k144evb/scripts/Make.defs
@@ -119,11 +119,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/s32k1xx/s32k146evb/scripts/Make.defs b/boards/arm/s32k1xx/s32k146evb/scripts/Make.defs
index f69d2c6ebf4..ffcb7b02a54 100644
--- a/boards/arm/s32k1xx/s32k146evb/scripts/Make.defs
+++ b/boards/arm/s32k1xx/s32k146evb/scripts/Make.defs
@@ -119,11 +119,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/s32k1xx/s32k148evb/scripts/Make.defs b/boards/arm/s32k1xx/s32k148evb/scripts/Make.defs
index cded1c393a5..4a7ad86f99e 100644
--- a/boards/arm/s32k1xx/s32k148evb/scripts/Make.defs
+++ b/boards/arm/s32k1xx/s32k148evb/scripts/Make.defs
@@ -119,11 +119,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/sam34/arduino-due/scripts/Make.defs b/boards/arm/sam34/arduino-due/scripts/Make.defs
index 87cb6ad41de..7a987ca67ab 100644
--- a/boards/arm/sam34/arduino-due/scripts/Make.defs
+++ b/boards/arm/sam34/arduino-due/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/arduino-due.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/arduino-due.ld
diff --git a/boards/arm/sam34/flipnclick-sam3x/scripts/Make.defs b/boards/arm/sam34/flipnclick-sam3x/scripts/Make.defs
index 513063e42d9..cb860044fe5 100644
--- a/boards/arm/sam34/flipnclick-sam3x/scripts/Make.defs
+++ b/boards/arm/sam34/flipnclick-sam3x/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/flash.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/flash.ld
diff --git a/boards/arm/sam34/sam3u-ek/configs/knsh/Make.defs b/boards/arm/sam34/sam3u-ek/configs/knsh/Make.defs
index e2f23fd5892..bed97810b15 100644
--- a/boards/arm/sam34/sam3u-ek/configs/knsh/Make.defs
+++ b/boards/arm/sam34/sam3u-ek/configs/knsh/Make.defs
@@ -39,14 +39,12 @@ include ${TOPDIR}$(DELIM)arch$(DELIM)arm$(DELIM)src$(DELIM)armv7-m$(DELIM)Toolch
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}" -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include$(DELIM)cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld}"
   ARCHSCRIPT += -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)kernel-space.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include -isystem $(TOPDIR)$(DELIM)include$(DELIM)cxx
   ARCHSCRIPT = -T$(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld
diff --git a/boards/arm/sam34/sam3u-ek/scripts/Make.defs b/boards/arm/sam34/sam3u-ek/scripts/Make.defs
index e4648dd9a5a..f6b8f839790 100644
--- a/boards/arm/sam34/sam3u-ek/scripts/Make.defs
+++ b/boards/arm/sam34/sam3u-ek/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/sam34/sam4cmp-db/scripts/Make.defs b/boards/arm/sam34/sam4cmp-db/scripts/Make.defs
index d4d883b8e00..87788cecc4e 100644
--- a/boards/arm/sam34/sam4cmp-db/scripts/Make.defs
+++ b/boards/arm/sam34/sam4cmp-db/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/sam4cmp-db.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/sam4cmp-db.ld
diff --git a/boards/arm/sam34/sam4e-ek/scripts/Make.defs b/boards/arm/sam34/sam4e-ek/scripts/Make.defs
index 93ea808e563..e3ca740b126 100644
--- a/boards/arm/sam34/sam4e-ek/scripts/Make.defs
+++ b/boards/arm/sam34/sam4e-ek/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/flash.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/flash.ld
diff --git a/boards/arm/sam34/sam4l-xplained/scripts/Make.defs b/boards/arm/sam34/sam4l-xplained/scripts/Make.defs
index ad99f40e74c..349cedd5509 100644
--- a/boards/arm/sam34/sam4l-xplained/scripts/Make.defs
+++ b/boards/arm/sam34/sam4l-xplained/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/sam4l-xplained.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/sam4l-xplained.ld
diff --git a/boards/arm/sam34/sam4s-xplained-pro/scripts/Make.defs b/boards/arm/sam34/sam4s-xplained-pro/scripts/Make.defs
index c3d1f64dce2..d947c88da40 100644
--- a/boards/arm/sam34/sam4s-xplained-pro/scripts/Make.defs
+++ b/boards/arm/sam34/sam4s-xplained-pro/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/sam4s-xplained-pro.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/sam4s-xplained-pro.ld
diff --git a/boards/arm/sam34/sam4s-xplained/scripts/Make.defs b/boards/arm/sam34/sam4s-xplained/scripts/Make.defs
index 6d83e7fb9c6..3a040a5b0d4 100644
--- a/boards/arm/sam34/sam4s-xplained/scripts/Make.defs
+++ b/boards/arm/sam34/sam4s-xplained/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/sam4s-xplained.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/sam4s-xplained.ld
diff --git a/boards/arm/sama5/sama5d2-xult/scripts/Make.defs b/boards/arm/sama5/sama5d2-xult/scripts/Make.defs
index 343a93a382f..24e661fff93 100644
--- a/boards/arm/sama5/sama5d2-xult/scripts/Make.defs
+++ b/boards/arm/sama5/sama5d2-xult/scripts/Make.defs
@@ -133,11 +133,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/sama5/sama5d3-xplained/scripts/Make.defs b/boards/arm/sama5/sama5d3-xplained/scripts/Make.defs
index f8b3949b884..1e630ccd152 100644
--- a/boards/arm/sama5/sama5d3-xplained/scripts/Make.defs
+++ b/boards/arm/sama5/sama5d3-xplained/scripts/Make.defs
@@ -129,11 +129,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/sama5/sama5d3x-ek/scripts/Make.defs b/boards/arm/sama5/sama5d3x-ek/scripts/Make.defs
index da932e66629..7a9218a402d 100644
--- a/boards/arm/sama5/sama5d3x-ek/scripts/Make.defs
+++ b/boards/arm/sama5/sama5d3x-ek/scripts/Make.defs
@@ -149,11 +149,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/sama5/sama5d4-ek/configs/knsh/Make.defs b/boards/arm/sama5/sama5d4-ek/configs/knsh/Make.defs
index 9053f8b15c0..2dc3ce75a1b 100644
--- a/boards/arm/sama5/sama5d4-ek/configs/knsh/Make.defs
+++ b/boards/arm/sama5/sama5d4-ek/configs/knsh/Make.defs
@@ -136,11 +136,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/sama5/sama5d4-ek/scripts/Make.defs b/boards/arm/sama5/sama5d4-ek/scripts/Make.defs
index 007f3e64af6..81b94c33289 100644
--- a/boards/arm/sama5/sama5d4-ek/scripts/Make.defs
+++ b/boards/arm/sama5/sama5d4-ek/scripts/Make.defs
@@ -133,11 +133,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/samd2l2/arduino-m0/scripts/Make.defs b/boards/arm/samd2l2/arduino-m0/scripts/Make.defs
index 6f6540de974..00199fae6ba 100644
--- a/boards/arm/samd2l2/arduino-m0/scripts/Make.defs
+++ b/boards/arm/samd2l2/arduino-m0/scripts/Make.defs
@@ -112,11 +112,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/samd2l2/samd20-xplained/scripts/Make.defs b/boards/arm/samd2l2/samd20-xplained/scripts/Make.defs
index 15b4bdbe241..5c8ffaa1c9d 100644
--- a/boards/arm/samd2l2/samd20-xplained/scripts/Make.defs
+++ b/boards/arm/samd2l2/samd20-xplained/scripts/Make.defs
@@ -112,11 +112,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/samd2l2/samd21-xplained/scripts/Make.defs b/boards/arm/samd2l2/samd21-xplained/scripts/Make.defs
index 5c925db30d9..e53b30797d5 100644
--- a/boards/arm/samd2l2/samd21-xplained/scripts/Make.defs
+++ b/boards/arm/samd2l2/samd21-xplained/scripts/Make.defs
@@ -112,11 +112,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/samd2l2/saml21-xplained/scripts/Make.defs b/boards/arm/samd2l2/saml21-xplained/scripts/Make.defs
index 2118ba3cd67..fc3c5061a3a 100644
--- a/boards/arm/samd2l2/saml21-xplained/scripts/Make.defs
+++ b/boards/arm/samd2l2/saml21-xplained/scripts/Make.defs
@@ -112,11 +112,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/samd5e5/metro-m4/scripts/Make.defs b/boards/arm/samd5e5/metro-m4/scripts/Make.defs
index 925c4328c25..d1bd2d5ea4a 100644
--- a/boards/arm/samd5e5/metro-m4/scripts/Make.defs
+++ b/boards/arm/samd5e5/metro-m4/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/samd5e5/same54-xplained-pro/scripts/Make.defs b/boards/arm/samd5e5/same54-xplained-pro/scripts/Make.defs
index d858618651a..e1d8ccf588c 100644
--- a/boards/arm/samd5e5/same54-xplained-pro/scripts/Make.defs
+++ b/boards/arm/samd5e5/same54-xplained-pro/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/samv7/same70-xplained/scripts/Make.defs b/boards/arm/samv7/same70-xplained/scripts/Make.defs
index 258bfa1f0fa..9138d08b893 100644
--- a/boards/arm/samv7/same70-xplained/scripts/Make.defs
+++ b/boards/arm/samv7/same70-xplained/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/samv7/samv71-xult/configs/knsh/Make.defs b/boards/arm/samv7/samv71-xult/configs/knsh/Make.defs
index ce76b9a0fd0..1c97159ec41 100644
--- a/boards/arm/samv7/samv71-xult/configs/knsh/Make.defs
+++ b/boards/arm/samv7/samv71-xult/configs/knsh/Make.defs
@@ -42,14 +42,12 @@ LDSCRIPT2 = kernel-space.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT1)}"
   ARCHSCRIPT += -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT2)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT1)
diff --git a/boards/arm/samv7/samv71-xult/scripts/Make.defs b/boards/arm/samv7/samv71-xult/scripts/Make.defs
index 97b0a699f9b..ee7c96e4da5 100644
--- a/boards/arm/samv7/samv71-xult/scripts/Make.defs
+++ b/boards/arm/samv7/samv71-xult/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/axoloti/scripts/Make.defs b/boards/arm/stm32/axoloti/scripts/Make.defs
index 09b3701b074..53f4b86d4e5 100644
--- a/boards/arm/stm32/axoloti/scripts/Make.defs
+++ b/boards/arm/stm32/axoloti/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/clicker2-stm32/scripts/Make.defs b/boards/arm/stm32/clicker2-stm32/scripts/Make.defs
index 36ddffce5c8..d37a7d308fb 100644
--- a/boards/arm/stm32/clicker2-stm32/scripts/Make.defs
+++ b/boards/arm/stm32/clicker2-stm32/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/cloudctrl/scripts/Make.defs b/boards/arm/stm32/cloudctrl/scripts/Make.defs
index a15959c65b6..97f115cef2b 100644
--- a/boards/arm/stm32/cloudctrl/scripts/Make.defs
+++ b/boards/arm/stm32/cloudctrl/scripts/Make.defs
@@ -47,13 +47,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/fire-stm32v2/scripts/Make.defs b/boards/arm/stm32/fire-stm32v2/scripts/Make.defs
index 0f62ad0ec06..56f8696e3aa 100644
--- a/boards/arm/stm32/fire-stm32v2/scripts/Make.defs
+++ b/boards/arm/stm32/fire-stm32v2/scripts/Make.defs
@@ -47,13 +47,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/hymini-stm32v/scripts/Make.defs b/boards/arm/stm32/hymini-stm32v/scripts/Make.defs
index 6882ccbce18..e1d5f170e61 100644
--- a/boards/arm/stm32/hymini-stm32v/scripts/Make.defs
+++ b/boards/arm/stm32/hymini-stm32v/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/maple/scripts/Make.defs b/boards/arm/stm32/maple/scripts/Make.defs
index 0a841d87120..6310a524350 100644
--- a/boards/arm/stm32/maple/scripts/Make.defs
+++ b/boards/arm/stm32/maple/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/mikroe-stm32f4/scripts/Make.defs b/boards/arm/stm32/mikroe-stm32f4/scripts/Make.defs
index 5aa4c778316..99d08fe1074 100644
--- a/boards/arm/stm32/mikroe-stm32f4/scripts/Make.defs
+++ b/boards/arm/stm32/mikroe-stm32f4/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/nucleo-f103rb/scripts/Make.defs b/boards/arm/stm32/nucleo-f103rb/scripts/Make.defs
index 6553bd02132..bddd2ad0c94 100644
--- a/boards/arm/stm32/nucleo-f103rb/scripts/Make.defs
+++ b/boards/arm/stm32/nucleo-f103rb/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/nucleo-f207zg/scripts/Make.defs b/boards/arm/stm32/nucleo-f207zg/scripts/Make.defs
index c5ebb1ad7a1..78acba5830d 100644
--- a/boards/arm/stm32/nucleo-f207zg/scripts/Make.defs
+++ b/boards/arm/stm32/nucleo-f207zg/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/nucleo-f302r8/scripts/Make.defs b/boards/arm/stm32/nucleo-f302r8/scripts/Make.defs
index f4660c13876..c71f0ca7c39 100644
--- a/boards/arm/stm32/nucleo-f302r8/scripts/Make.defs
+++ b/boards/arm/stm32/nucleo-f302r8/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/nucleo-f303re/scripts/Make.defs b/boards/arm/stm32/nucleo-f303re/scripts/Make.defs
index d6834a3fa7f..12740e67b22 100644
--- a/boards/arm/stm32/nucleo-f303re/scripts/Make.defs
+++ b/boards/arm/stm32/nucleo-f303re/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/nucleo-f303ze/scripts/Make.defs b/boards/arm/stm32/nucleo-f303ze/scripts/Make.defs
index 01ef808a9e0..ac9b913d7b7 100644
--- a/boards/arm/stm32/nucleo-f303ze/scripts/Make.defs
+++ b/boards/arm/stm32/nucleo-f303ze/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/nucleo-f334r8/scripts/Make.defs b/boards/arm/stm32/nucleo-f334r8/scripts/Make.defs
index 70cba577149..8037d358d89 100644
--- a/boards/arm/stm32/nucleo-f334r8/scripts/Make.defs
+++ b/boards/arm/stm32/nucleo-f334r8/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/nucleo-f410rb/scripts/Make.defs b/boards/arm/stm32/nucleo-f410rb/scripts/Make.defs
index 6b956f1a461..3c4d878b86b 100644
--- a/boards/arm/stm32/nucleo-f410rb/scripts/Make.defs
+++ b/boards/arm/stm32/nucleo-f410rb/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = f410rb.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/nucleo-f429zi/scripts/Make.defs b/boards/arm/stm32/nucleo-f429zi/scripts/Make.defs
index f99fa95094a..f07527ced38 100644
--- a/boards/arm/stm32/nucleo-f429zi/scripts/Make.defs
+++ b/boards/arm/stm32/nucleo-f429zi/scripts/Make.defs
@@ -26,13 +26,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/nucleo-f446re/scripts/Make.defs b/boards/arm/stm32/nucleo-f446re/scripts/Make.defs
index e6e59ddebc7..f632a678e4b 100644
--- a/boards/arm/stm32/nucleo-f446re/scripts/Make.defs
+++ b/boards/arm/stm32/nucleo-f446re/scripts/Make.defs
@@ -51,13 +51,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(BOARD_DIR)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(BOARD_DIR)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/nucleo-f4x1re/scripts/Make.defs b/boards/arm/stm32/nucleo-f4x1re/scripts/Make.defs
index eae5ebabb71..414f6d41097 100644
--- a/boards/arm/stm32/nucleo-f4x1re/scripts/Make.defs
+++ b/boards/arm/stm32/nucleo-f4x1re/scripts/Make.defs
@@ -47,13 +47,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/nucleo-l152re/scripts/Make.defs b/boards/arm/stm32/nucleo-l152re/scripts/Make.defs
index 11db120e6bc..a2f8c99d9b3 100644
--- a/boards/arm/stm32/nucleo-l152re/scripts/Make.defs
+++ b/boards/arm/stm32/nucleo-l152re/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/olimex-stm32-e407/scripts/Make.defs b/boards/arm/stm32/olimex-stm32-e407/scripts/Make.defs
index 1acdb296416..8bec56f91a4 100644
--- a/boards/arm/stm32/olimex-stm32-e407/scripts/Make.defs
+++ b/boards/arm/stm32/olimex-stm32-e407/scripts/Make.defs
@@ -47,13 +47,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/olimex-stm32-h405/scripts/Make.defs b/boards/arm/stm32/olimex-stm32-h405/scripts/Make.defs
index 9095485725c..7b1d991f141 100644
--- a/boards/arm/stm32/olimex-stm32-h405/scripts/Make.defs
+++ b/boards/arm/stm32/olimex-stm32-h405/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/olimex-stm32-h407/scripts/Make.defs b/boards/arm/stm32/olimex-stm32-h407/scripts/Make.defs
index a4da92546de..e2bccd94bdd 100644
--- a/boards/arm/stm32/olimex-stm32-h407/scripts/Make.defs
+++ b/boards/arm/stm32/olimex-stm32-h407/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/olimex-stm32-p107/scripts/Make.defs b/boards/arm/stm32/olimex-stm32-p107/scripts/Make.defs
index 3c4bb30701b..b2c4b604f3d 100644
--- a/boards/arm/stm32/olimex-stm32-p107/scripts/Make.defs
+++ b/boards/arm/stm32/olimex-stm32-p107/scripts/Make.defs
@@ -45,20 +45,17 @@ endif
 
 ifeq ($(CONFIG_WINDOWS_NATIVE),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)\tools\mkdeps.exe
   ARCHINCLUDES = -I. -isystem $(TOPDIR)\include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)\include -isystem $(TOPDIR)\include\cxx
   ARCHSCRIPT = -T$(TOPDIR)\boards\$(CONFIG_ARCH)\$(CONFIG_ARCH_CHIP)\$(CONFIG_ARCH_BOARD)\scripts\$(LDSCRIPT)
 else
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/olimex-stm32-p207/scripts/Make.defs b/boards/arm/stm32/olimex-stm32-p207/scripts/Make.defs
index c9f32f44efe..b5a6094bfa3 100644
--- a/boards/arm/stm32/olimex-stm32-p207/scripts/Make.defs
+++ b/boards/arm/stm32/olimex-stm32-p207/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/olimex-stm32-p407/configs/kelf/Make.defs b/boards/arm/stm32/olimex-stm32-p407/configs/kelf/Make.defs
index a2b9049042f..5ca013685d1 100644
--- a/boards/arm/stm32/olimex-stm32-p407/configs/kelf/Make.defs
+++ b/boards/arm/stm32/olimex-stm32-p407/configs/kelf/Make.defs
@@ -39,14 +39,12 @@ include ${TOPDIR}$(DELIM)arch$(DELIM)arm$(DELIM)src$(DELIM)armv7-m$(DELIM)Toolch
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}" -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include$(DELIM)cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld}"
   ARCHSCRIPT += -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)kernel-space.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include -isystem $(TOPDIR)$(DELIM)include$(DELIM)cxx
   ARCHSCRIPT = -T$(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld
diff --git a/boards/arm/stm32/olimex-stm32-p407/configs/kmodule/Make.defs b/boards/arm/stm32/olimex-stm32-p407/configs/kmodule/Make.defs
index 6afd919d6aa..fecb6955600 100644
--- a/boards/arm/stm32/olimex-stm32-p407/configs/kmodule/Make.defs
+++ b/boards/arm/stm32/olimex-stm32-p407/configs/kmodule/Make.defs
@@ -39,14 +39,12 @@ include ${TOPDIR}$(DELIM)arch$(DELIM)arm$(DELIM)src$(DELIM)armv7-m$(DELIM)Toolch
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}" -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include$(DELIM)cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld}"
   ARCHSCRIPT += -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)kernel-space.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include -isystem $(TOPDIR)$(DELIM)include$(DELIM)cxx
   ARCHSCRIPT = -T$(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld
diff --git a/boards/arm/stm32/olimex-stm32-p407/configs/knsh/Make.defs b/boards/arm/stm32/olimex-stm32-p407/configs/knsh/Make.defs
index 451d6963691..7402490c762 100644
--- a/boards/arm/stm32/olimex-stm32-p407/configs/knsh/Make.defs
+++ b/boards/arm/stm32/olimex-stm32-p407/configs/knsh/Make.defs
@@ -42,14 +42,12 @@ LDSCRIPT2 = kernel-space.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT1)}"
   ARCHSCRIPT += -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT2)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT1)
diff --git a/boards/arm/stm32/olimex-stm32-p407/scripts/Make.defs b/boards/arm/stm32/olimex-stm32-p407/scripts/Make.defs
index da7c193af2f..e7acbd38c22 100644
--- a/boards/arm/stm32/olimex-stm32-p407/scripts/Make.defs
+++ b/boards/arm/stm32/olimex-stm32-p407/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/olimexino-stm32/scripts/Make.defs b/boards/arm/stm32/olimexino-stm32/scripts/Make.defs
index 595547b23b2..3a8f84d83b1 100644
--- a/boards/arm/stm32/olimexino-stm32/scripts/Make.defs
+++ b/boards/arm/stm32/olimexino-stm32/scripts/Make.defs
@@ -45,20 +45,17 @@ endif
 
 ifeq ($(CONFIG_WINDOWS_NATIVE),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)\tools\mkdeps.exe
   ARCHINCLUDES = -I. -isystem $(TOPDIR)\include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)\include -isystem $(TOPDIR)\include\cxx
   ARCHSCRIPT = -T$(TOPDIR)\boards\$(CONFIG_ARCH)\$(CONFIG_ARCH_CHIP)\$(CONFIG_ARCH_BOARD)\scripts\$(LDSCRIPT)
 else
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/omnibusf4/scripts/Make.defs b/boards/arm/stm32/omnibusf4/scripts/Make.defs
index 36a92bdab29..356ac004707 100644
--- a/boards/arm/stm32/omnibusf4/scripts/Make.defs
+++ b/boards/arm/stm32/omnibusf4/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/photon/scripts/Make.defs b/boards/arm/stm32/photon/scripts/Make.defs
index 15fc98ab549..582e3d81a17 100644
--- a/boards/arm/stm32/photon/scripts/Make.defs
+++ b/boards/arm/stm32/photon/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/shenzhou/scripts/Make.defs b/boards/arm/stm32/shenzhou/scripts/Make.defs
index 955a51c816f..55ab3d0be25 100644
--- a/boards/arm/stm32/shenzhou/scripts/Make.defs
+++ b/boards/arm/stm32/shenzhou/scripts/Make.defs
@@ -47,13 +47,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/stm3210e-eval/scripts/Make.defs b/boards/arm/stm32/stm3210e-eval/scripts/Make.defs
index 672c991cee5..784d38ed1e4 100644
--- a/boards/arm/stm32/stm3210e-eval/scripts/Make.defs
+++ b/boards/arm/stm32/stm3210e-eval/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/stm3220g-eval/scripts/Make.defs b/boards/arm/stm32/stm3220g-eval/scripts/Make.defs
index f3189e923a5..e73689fb0cb 100644
--- a/boards/arm/stm32/stm3220g-eval/scripts/Make.defs
+++ b/boards/arm/stm32/stm3220g-eval/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/stm3240g-eval/configs/knxwm/Make.defs b/boards/arm/stm32/stm3240g-eval/configs/knxwm/Make.defs
index ac7f49fc6fb..e5140eb1f7b 100644
--- a/boards/arm/stm32/stm3240g-eval/configs/knxwm/Make.defs
+++ b/boards/arm/stm32/stm3240g-eval/configs/knxwm/Make.defs
@@ -39,14 +39,12 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include}" -isystem "${shell cygpath -w $(TOPDIR)$(DELIM)include$(DELIM)cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld}"
   ARCHSCRIPT += -T "${shell cygpath -w $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)kernel-space.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)$(DELIM)include -isystem $(TOPDIR)$(DELIM)include$(DELIM)cxx
   ARCHSCRIPT = -T$(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)memory.ld
diff --git a/boards/arm/stm32/stm3240g-eval/scripts/Make.defs b/boards/arm/stm32/stm3240g-eval/scripts/Make.defs
index df8738e2a5e..947c50b80d7 100644
--- a/boards/arm/stm32/stm3240g-eval/scripts/Make.defs
+++ b/boards/arm/stm32/stm3240g-eval/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/stm32_tiny/scripts/Make.defs b/boards/arm/stm32/stm32_tiny/scripts/Make.defs
index ef65108366a..45b8af98a4f 100644
--- a/boards/arm/stm32/stm32_tiny/scripts/Make.defs
+++ b/boards/arm/stm32/stm32_tiny/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/stm32butterfly2/scripts/Make.defs b/boards/arm/stm32/stm32butterfly2/scripts/Make.defs
index 6c174f0efad..9f11753e98d 100644
--- a/boards/arm/stm32/stm32butterfly2/scripts/Make.defs
+++ b/boards/arm/stm32/stm32butterfly2/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/stm32f103-minimum/scripts/Make.defs b/boards/arm/stm32/stm32f103-minimum/scripts/Make.defs
index 347d68d51c2..5d88e68a09b 100644
--- a/boards/arm/stm32/stm32f103-minimum/scripts/Make.defs
+++ b/boards/arm/stm32/stm32f103-minimum/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/stm32f334-disco/scripts/Make.defs b/boards/arm/stm32/stm32f334-disco/scripts/Make.defs
index 946652166b3..6505668107e 100644
--- a/boards/arm/stm32/stm32f334-disco/scripts/Make.defs
+++ b/boards/arm/stm32/stm32f334-disco/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/stm32f3discovery/scripts/Make.defs b/boards/arm/stm32/stm32f3discovery/scripts/Make.defs
index 81031cd1082..dbfb5b391e2 100644
--- a/boards/arm/stm32/stm32f3discovery/scripts/Make.defs
+++ b/boards/arm/stm32/stm32f3discovery/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/stm32f411e-disco/scripts/Make.defs b/boards/arm/stm32/stm32f411e-disco/scripts/Make.defs
index ddc3d7fe70d..4fbb4f0b57e 100644
--- a/boards/arm/stm32/stm32f411e-disco/scripts/Make.defs
+++ b/boards/arm/stm32/stm32f411e-disco/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = f411ve.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/stm32f429i-disco/scripts/Make.defs b/boards/arm/stm32/stm32f429i-disco/scripts/Make.defs
index 18b9269c6e0..656b32654d4 100644
--- a/boards/arm/stm32/stm32f429i-disco/scripts/Make.defs
+++ b/boards/arm/stm32/stm32f429i-disco/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/stm32f4discovery/configs/cxxtest/Make.defs b/boards/arm/stm32/stm32f4discovery/configs/cxxtest/Make.defs
index edceade0214..25fdc190114 100644
--- a/boards/arm/stm32/stm32f4discovery/configs/cxxtest/Make.defs
+++ b/boards/arm/stm32/stm32f4discovery/configs/cxxtest/Make.defs
@@ -57,7 +57,6 @@ EXTRA_LIBS = -lsupc++
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" \
     -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}" \
@@ -65,7 +64,6 @@ ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include \
     -isystem $(TOPDIR)/include/cxx -isystem $(TOPDIR)/include/uClibc++
diff --git a/boards/arm/stm32/stm32f4discovery/configs/elf/Make.defs b/boards/arm/stm32/stm32f4discovery/configs/elf/Make.defs
index 3dec85dae66..ac98d2a4fcb 100644
--- a/boards/arm/stm32/stm32f4discovery/configs/elf/Make.defs
+++ b/boards/arm/stm32/stm32f4discovery/configs/elf/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/stm32f4discovery/configs/posix_spawn/Make.defs b/boards/arm/stm32/stm32f4discovery/configs/posix_spawn/Make.defs
index 1518ac9847c..cfb2ef27a91 100644
--- a/boards/arm/stm32/stm32f4discovery/configs/posix_spawn/Make.defs
+++ b/boards/arm/stm32/stm32f4discovery/configs/posix_spawn/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/stm32f4discovery/configs/testlibcxx/Make.defs b/boards/arm/stm32/stm32f4discovery/configs/testlibcxx/Make.defs
index a278ba40872..837e4903a80 100644
--- a/boards/arm/stm32/stm32f4discovery/configs/testlibcxx/Make.defs
+++ b/boards/arm/stm32/stm32f4discovery/configs/testlibcxx/Make.defs
@@ -59,7 +59,6 @@ EXTRA_LIBS = -lsupc++
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" \
     -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}" \
@@ -68,7 +67,6 @@ ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
                    $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include \
     -isystem $(TOPDIR)/include/cxx -isystem $(TOPDIR)/include/libcxx
diff --git a/boards/arm/stm32/stm32f4discovery/configs/winbuild/Make.defs b/boards/arm/stm32/stm32f4discovery/configs/winbuild/Make.defs
index 4ef9ea6deb7..b998665ba50 100644
--- a/boards/arm/stm32/stm32f4discovery/configs/winbuild/Make.defs
+++ b/boards/arm/stm32/stm32f4discovery/configs/winbuild/Make.defs
@@ -96,7 +96,3 @@ HOSTINCLUDES = -I.
 HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
 HOSTLDFLAGS =
 HOSTEXEEXT = .exe
-
-# Windows-native host tools
-
-MKDEP = $(TOPDIR)\tools\mkdeps.exe --winnative
diff --git a/boards/arm/stm32/stm32f4discovery/scripts/Make.defs b/boards/arm/stm32/stm32f4discovery/scripts/Make.defs
index 5873240ff88..1f914d9ad8a 100644
--- a/boards/arm/stm32/stm32f4discovery/scripts/Make.defs
+++ b/boards/arm/stm32/stm32f4discovery/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/stm32ldiscovery/scripts/Make.defs b/boards/arm/stm32/stm32ldiscovery/scripts/Make.defs
index b791803061d..01a420510e9 100644
--- a/boards/arm/stm32/stm32ldiscovery/scripts/Make.defs
+++ b/boards/arm/stm32/stm32ldiscovery/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/stm32vldiscovery/scripts/Make.defs b/boards/arm/stm32/stm32vldiscovery/scripts/Make.defs
index b669ac0a1be..5302ed5fa4d 100644
--- a/boards/arm/stm32/stm32vldiscovery/scripts/Make.defs
+++ b/boards/arm/stm32/stm32vldiscovery/scripts/Make.defs
@@ -42,13 +42,11 @@ LDSCRIPT = stm32vldiscovery.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32/viewtool-stm32f107/scripts/Make.defs b/boards/arm/stm32/viewtool-stm32f107/scripts/Make.defs
index 54bfda8c28a..64701e9448e 100644
--- a/boards/arm/stm32/viewtool-stm32f107/scripts/Make.defs
+++ b/boards/arm/stm32/viewtool-stm32f107/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f0l0g0/b-l072z-lrwan1/scripts/Make.defs b/boards/arm/stm32f0l0g0/b-l072z-lrwan1/scripts/Make.defs
index 122c11ddbc7..359f078cefc 100644
--- a/boards/arm/stm32f0l0g0/b-l072z-lrwan1/scripts/Make.defs
+++ b/boards/arm/stm32f0l0g0/b-l072z-lrwan1/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f0l0g0/nucleo-f072rb/scripts/Make.defs b/boards/arm/stm32f0l0g0/nucleo-f072rb/scripts/Make.defs
index 5ec42042d98..508a8f0c984 100644
--- a/boards/arm/stm32f0l0g0/nucleo-f072rb/scripts/Make.defs
+++ b/boards/arm/stm32f0l0g0/nucleo-f072rb/scripts/Make.defs
@@ -42,13 +42,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f0l0g0/nucleo-f091rc/scripts/Make.defs b/boards/arm/stm32f0l0g0/nucleo-f091rc/scripts/Make.defs
index 63c7c615db7..0048ae89a36 100644
--- a/boards/arm/stm32f0l0g0/nucleo-f091rc/scripts/Make.defs
+++ b/boards/arm/stm32f0l0g0/nucleo-f091rc/scripts/Make.defs
@@ -42,13 +42,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f0l0g0/nucleo-g070rb/scripts/Make.defs b/boards/arm/stm32f0l0g0/nucleo-g070rb/scripts/Make.defs
index 0e7f78b0ebe..2f3fb98aa78 100644
--- a/boards/arm/stm32f0l0g0/nucleo-g070rb/scripts/Make.defs
+++ b/boards/arm/stm32f0l0g0/nucleo-g070rb/scripts/Make.defs
@@ -44,13 +44,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f0l0g0/nucleo-g071rb/scripts/Make.defs b/boards/arm/stm32f0l0g0/nucleo-g071rb/scripts/Make.defs
index 3e798b18060..8ec75f1881a 100644
--- a/boards/arm/stm32f0l0g0/nucleo-g071rb/scripts/Make.defs
+++ b/boards/arm/stm32f0l0g0/nucleo-g071rb/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f0l0g0/nucleo-l073rz/scripts/Make.defs b/boards/arm/stm32f0l0g0/nucleo-l073rz/scripts/Make.defs
index 6bd7950bf60..0ad194dfb0b 100644
--- a/boards/arm/stm32f0l0g0/nucleo-l073rz/scripts/Make.defs
+++ b/boards/arm/stm32f0l0g0/nucleo-l073rz/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f0l0g0/stm32f051-discovery/scripts/Make.defs b/boards/arm/stm32f0l0g0/stm32f051-discovery/scripts/Make.defs
index 18e655ec3b2..43d69f2a174 100644
--- a/boards/arm/stm32f0l0g0/stm32f051-discovery/scripts/Make.defs
+++ b/boards/arm/stm32f0l0g0/stm32f051-discovery/scripts/Make.defs
@@ -42,13 +42,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f0l0g0/stm32f072-discovery/scripts/Make.defs b/boards/arm/stm32f0l0g0/stm32f072-discovery/scripts/Make.defs
index ae1649bea56..4bbecaa723b 100644
--- a/boards/arm/stm32f0l0g0/stm32f072-discovery/scripts/Make.defs
+++ b/boards/arm/stm32f0l0g0/stm32f072-discovery/scripts/Make.defs
@@ -42,13 +42,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f7/nucleo-144/configs/f722-nsh/Make.defs b/boards/arm/stm32f7/nucleo-144/configs/f722-nsh/Make.defs
index ccc1af848ca..e5b0b775136 100644
--- a/boards/arm/stm32f7/nucleo-144/configs/f722-nsh/Make.defs
+++ b/boards/arm/stm32f7/nucleo-144/configs/f722-nsh/Make.defs
@@ -45,13 +45,11 @@ LDSCRIPT = f722-flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f7/nucleo-144/configs/f746-evalos/Make.defs b/boards/arm/stm32f7/nucleo-144/configs/f746-evalos/Make.defs
index 5e7f761e38e..441815d6e4a 100644
--- a/boards/arm/stm32f7/nucleo-144/configs/f746-evalos/Make.defs
+++ b/boards/arm/stm32f7/nucleo-144/configs/f746-evalos/Make.defs
@@ -43,13 +43,11 @@ LDSCRIPT = f746-flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f7/nucleo-144/configs/f746-nsh/Make.defs b/boards/arm/stm32f7/nucleo-144/configs/f746-nsh/Make.defs
index 8f1b5118840..c72513d019b 100644
--- a/boards/arm/stm32f7/nucleo-144/configs/f746-nsh/Make.defs
+++ b/boards/arm/stm32f7/nucleo-144/configs/f746-nsh/Make.defs
@@ -42,13 +42,11 @@ LDSCRIPT = f746-flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f7/nucleo-144/configs/f767-evalos/Make.defs b/boards/arm/stm32f7/nucleo-144/configs/f767-evalos/Make.defs
index ef81a960a77..49bfe0f39a7 100644
--- a/boards/arm/stm32f7/nucleo-144/configs/f767-evalos/Make.defs
+++ b/boards/arm/stm32f7/nucleo-144/configs/f767-evalos/Make.defs
@@ -43,13 +43,11 @@ LDSCRIPT = f767-flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f7/nucleo-144/configs/f767-netnsh/Make.defs b/boards/arm/stm32f7/nucleo-144/configs/f767-netnsh/Make.defs
index 28a009f9542..1e442273843 100644
--- a/boards/arm/stm32f7/nucleo-144/configs/f767-netnsh/Make.defs
+++ b/boards/arm/stm32f7/nucleo-144/configs/f767-netnsh/Make.defs
@@ -42,13 +42,11 @@ LDSCRIPT = f767-flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f7/nucleo-144/configs/f767-nsh/Make.defs b/boards/arm/stm32f7/nucleo-144/configs/f767-nsh/Make.defs
index a5139da2587..42f974f11b6 100644
--- a/boards/arm/stm32f7/nucleo-144/configs/f767-nsh/Make.defs
+++ b/boards/arm/stm32f7/nucleo-144/configs/f767-nsh/Make.defs
@@ -42,13 +42,11 @@ LDSCRIPT = f767-flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f7/stm32f746-ws/scripts/Make.defs b/boards/arm/stm32f7/stm32f746-ws/scripts/Make.defs
index cde89593c93..df13e3d78b8 100644
--- a/boards/arm/stm32f7/stm32f746-ws/scripts/Make.defs
+++ b/boards/arm/stm32f7/stm32f746-ws/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f7/stm32f746g-disco/scripts/Make.defs b/boards/arm/stm32f7/stm32f746g-disco/scripts/Make.defs
index db8b9c24386..5915e0564a1 100644
--- a/boards/arm/stm32f7/stm32f746g-disco/scripts/Make.defs
+++ b/boards/arm/stm32f7/stm32f746g-disco/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32f7/stm32f769i-disco/scripts/Make.defs b/boards/arm/stm32f7/stm32f769i-disco/scripts/Make.defs
index edbfa633eb2..e0110eb9ba6 100644
--- a/boards/arm/stm32f7/stm32f769i-disco/scripts/Make.defs
+++ b/boards/arm/stm32f7/stm32f769i-disco/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32h7/nucleo-h743zi/scripts/Make.defs b/boards/arm/stm32h7/nucleo-h743zi/scripts/Make.defs
index 499f34e7c00..f7b1097a50c 100644
--- a/boards/arm/stm32h7/nucleo-h743zi/scripts/Make.defs
+++ b/boards/arm/stm32h7/nucleo-h743zi/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32h7/stm32h747i-disco/scripts/Make.defs b/boards/arm/stm32h7/stm32h747i-disco/scripts/Make.defs
index 152f7520826..a67c6b718e0 100644
--- a/boards/arm/stm32h7/stm32h747i-disco/scripts/Make.defs
+++ b/boards/arm/stm32h7/stm32h747i-disco/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32l4/b-l475e-iot01a/scripts/Make.defs b/boards/arm/stm32l4/b-l475e-iot01a/scripts/Make.defs
index dcfc08e6a9c..56ef8056e9f 100644
--- a/boards/arm/stm32l4/b-l475e-iot01a/scripts/Make.defs
+++ b/boards/arm/stm32l4/b-l475e-iot01a/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32l4/nucleo-l432kc/scripts/Make.defs b/boards/arm/stm32l4/nucleo-l432kc/scripts/Make.defs
index 9ace313f89a..72766e6c8a2 100644
--- a/boards/arm/stm32l4/nucleo-l432kc/scripts/Make.defs
+++ b/boards/arm/stm32l4/nucleo-l432kc/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = l432kc.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mknulldeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32l4/nucleo-l452re/scripts/Make.defs b/boards/arm/stm32l4/nucleo-l452re/scripts/Make.defs
index 222bcf547d2..91406025537 100644
--- a/boards/arm/stm32l4/nucleo-l452re/scripts/Make.defs
+++ b/boards/arm/stm32l4/nucleo-l452re/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = l452re-flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mknulldeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32l4/nucleo-l476rg/scripts/Make.defs b/boards/arm/stm32l4/nucleo-l476rg/scripts/Make.defs
index 75dd6ba0329..34be1d1b058 100644
--- a/boards/arm/stm32l4/nucleo-l476rg/scripts/Make.defs
+++ b/boards/arm/stm32l4/nucleo-l476rg/scripts/Make.defs
@@ -41,7 +41,6 @@ LDSCRIPT = l476rg.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mknulldeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
@@ -51,7 +50,6 @@ ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   endif
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32l4/nucleo-l496zg/scripts/Make.defs b/boards/arm/stm32l4/nucleo-l496zg/scripts/Make.defs
index 4a049e433b1..71f50030452 100644
--- a/boards/arm/stm32l4/nucleo-l496zg/scripts/Make.defs
+++ b/boards/arm/stm32l4/nucleo-l496zg/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = l496zg-flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mknulldeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32l4/stm32l476-mdk/scripts/Make.defs b/boards/arm/stm32l4/stm32l476-mdk/scripts/Make.defs
index 756cf7e0c49..36d1610b37e 100644
--- a/boards/arm/stm32l4/stm32l476-mdk/scripts/Make.defs
+++ b/boards/arm/stm32l4/stm32l476-mdk/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = stm32l476-mdk.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mknulldeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32l4/stm32l476vg-disco/configs/knsh/Make.defs b/boards/arm/stm32l4/stm32l476vg-disco/configs/knsh/Make.defs
index 124dfbab0a4..19e7ed1e4f8 100644
--- a/boards/arm/stm32l4/stm32l476vg-disco/configs/knsh/Make.defs
+++ b/boards/arm/stm32l4/stm32l476vg-disco/configs/knsh/Make.defs
@@ -42,14 +42,12 @@ LDSCRIPT2 = kernel-space.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mknulldeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT1)}"
   ARCHSCRIPT += -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT2)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT1)
diff --git a/boards/arm/stm32l4/stm32l476vg-disco/scripts/Make.defs b/boards/arm/stm32l4/stm32l476vg-disco/scripts/Make.defs
index 1e32dc3803e..ade308b3471 100644
--- a/boards/arm/stm32l4/stm32l476vg-disco/scripts/Make.defs
+++ b/boards/arm/stm32l4/stm32l476vg-disco/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = stm32l476vg-disco.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mknulldeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/stm32l4/stm32l4r9ai-disco/configs/knsh/Make.defs b/boards/arm/stm32l4/stm32l4r9ai-disco/configs/knsh/Make.defs
index 19d0c34967e..af36afe3057 100644
--- a/boards/arm/stm32l4/stm32l4r9ai-disco/configs/knsh/Make.defs
+++ b/boards/arm/stm32l4/stm32l4r9ai-disco/configs/knsh/Make.defs
@@ -42,14 +42,12 @@ LDSCRIPT2 = kernel-space.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mknulldeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT1)}"
   ARCHSCRIPT += -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT2)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT1)
diff --git a/boards/arm/stm32l4/stm32l4r9ai-disco/scripts/Make.defs b/boards/arm/stm32l4/stm32l4r9ai-disco/scripts/Make.defs
index af4db51b666..9c974960e0f 100644
--- a/boards/arm/stm32l4/stm32l4r9ai-disco/scripts/Make.defs
+++ b/boards/arm/stm32l4/stm32l4r9ai-disco/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = stm32l4r9ai-disco.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mknulldeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/str71x/olimex-strp711/scripts/Make.defs b/boards/arm/str71x/olimex-strp711/scripts/Make.defs
index 3ca6c04ebd8..f0f340ea735 100644
--- a/boards/arm/str71x/olimex-strp711/scripts/Make.defs
+++ b/boards/arm/str71x/olimex-strp711/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/arm/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/tiva/dk-tm4c129x/scripts/Make.defs b/boards/arm/tiva/dk-tm4c129x/scripts/Make.defs
index 1cb1c7a41c1..8b84d911ecb 100644
--- a/boards/arm/tiva/dk-tm4c129x/scripts/Make.defs
+++ b/boards/arm/tiva/dk-tm4c129x/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/tiva/eagle100/scripts/Make.defs b/boards/arm/tiva/eagle100/scripts/Make.defs
index 4ec1c518208..c6a42cb520a 100644
--- a/boards/arm/tiva/eagle100/scripts/Make.defs
+++ b/boards/arm/tiva/eagle100/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/tiva/ekk-lm3s9b96/scripts/Make.defs b/boards/arm/tiva/ekk-lm3s9b96/scripts/Make.defs
index d6bb38fd4b5..f2e6e6fbe58 100644
--- a/boards/arm/tiva/ekk-lm3s9b96/scripts/Make.defs
+++ b/boards/arm/tiva/ekk-lm3s9b96/scripts/Make.defs
@@ -40,13 +40,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ekk-lm3s9b96.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ekk-lm3s9b96.ld
diff --git a/boards/arm/tiva/launchxl-cc1310/scripts/Make.defs b/boards/arm/tiva/launchxl-cc1310/scripts/Make.defs
index 6e15a874ce4..3f08aa22a2f 100644
--- a/boards/arm/tiva/launchxl-cc1310/scripts/Make.defs
+++ b/boards/arm/tiva/launchxl-cc1310/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/tiva/launchxl-cc1312r1/scripts/Make.defs b/boards/arm/tiva/launchxl-cc1312r1/scripts/Make.defs
index 73863fbcc52..165b756fe14 100644
--- a/boards/arm/tiva/launchxl-cc1312r1/scripts/Make.defs
+++ b/boards/arm/tiva/launchxl-cc1312r1/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/tiva/lm3s6432-s2e/scripts/Make.defs b/boards/arm/tiva/lm3s6432-s2e/scripts/Make.defs
index ec8e7d2ad9b..fd236ba19ea 100644
--- a/boards/arm/tiva/lm3s6432-s2e/scripts/Make.defs
+++ b/boards/arm/tiva/lm3s6432-s2e/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/lm3s6432-s2e.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/lm3s6432-s2e.ld
diff --git a/boards/arm/tiva/lm3s6965-ek/scripts/Make.defs b/boards/arm/tiva/lm3s6965-ek/scripts/Make.defs
index 52260485de7..c4e90710a36 100644
--- a/boards/arm/tiva/lm3s6965-ek/scripts/Make.defs
+++ b/boards/arm/tiva/lm3s6965-ek/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/tiva/lm3s8962-ek/scripts/Make.defs b/boards/arm/tiva/lm3s8962-ek/scripts/Make.defs
index 3e46cc8f05b..217104d3135 100644
--- a/boards/arm/tiva/lm3s8962-ek/scripts/Make.defs
+++ b/boards/arm/tiva/lm3s8962-ek/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/tiva/lm4f120-launchpad/scripts/Make.defs b/boards/arm/tiva/lm4f120-launchpad/scripts/Make.defs
index 370ac65c25b..0bf03c2d64f 100644
--- a/boards/arm/tiva/lm4f120-launchpad/scripts/Make.defs
+++ b/boards/arm/tiva/lm4f120-launchpad/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/lm4f120-launchpad.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/lm4f120-launchpad.ld
diff --git a/boards/arm/tiva/tm4c123g-launchpad/scripts/Make.defs b/boards/arm/tiva/tm4c123g-launchpad/scripts/Make.defs
index 661e89fbb16..9cf1efff97b 100644
--- a/boards/arm/tiva/tm4c123g-launchpad/scripts/Make.defs
+++ b/boards/arm/tiva/tm4c123g-launchpad/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/tm4c123g-launchpad.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/tm4c123g-launchpad.ld
diff --git a/boards/arm/tiva/tm4c1294-launchpad/scripts/Make.defs b/boards/arm/tiva/tm4c1294-launchpad/scripts/Make.defs
index a2e39e87007..fa7ba418b4e 100644
--- a/boards/arm/tiva/tm4c1294-launchpad/scripts/Make.defs
+++ b/boards/arm/tiva/tm4c1294-launchpad/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/arm/tms570/launchxl-tms57004/scripts/Make.defs b/boards/arm/tms570/launchxl-tms57004/scripts/Make.defs
index 9a341e9efd0..efb553abe14 100644
--- a/boards/arm/tms570/launchxl-tms57004/scripts/Make.defs
+++ b/boards/arm/tms570/launchxl-tms57004/scripts/Make.defs
@@ -126,11 +126,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/tms570/tms570ls31x-usb-kit/scripts/Make.defs b/boards/arm/tms570/tms570ls31x-usb-kit/scripts/Make.defs
index fa52c29b85d..95be7676763 100644
--- a/boards/arm/tms570/tms570ls31x-usb-kit/scripts/Make.defs
+++ b/boards/arm/tms570/tms570ls31x-usb-kit/scripts/Make.defs
@@ -125,11 +125,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/arm/xmc4/xmc4500-relax/scripts/Make.defs b/boards/arm/xmc4/xmc4500-relax/scripts/Make.defs
index f205a086073..4f08d6acf70 100644
--- a/boards/arm/xmc4/xmc4500-relax/scripts/Make.defs
+++ b/boards/arm/xmc4/xmc4500-relax/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/arm/xmc4/xmc4700-relax/scripts/Make.defs b/boards/arm/xmc4/xmc4700-relax/scripts/Make.defs
index 65ef6deceaa..85fa8ac9ba5 100644
--- a/boards/arm/xmc4/xmc4700-relax/scripts/Make.defs
+++ b/boards/arm/xmc4/xmc4700-relax/scripts/Make.defs
@@ -26,13 +26,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/avr/at32uc3/avr32dev1/scripts/Make.defs b/boards/avr/at32uc3/avr32dev1/scripts/Make.defs
index 94fa9449186..4c4602e7ba0 100644
--- a/boards/avr/at32uc3/avr32dev1/scripts/Make.defs
+++ b/boards/avr/at32uc3/avr32dev1/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/avr/src/avr32/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/avr32dev1.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/avr32dev1.ld
diff --git a/boards/avr/at90usb/micropendous3/scripts/Make.defs b/boards/avr/at90usb/micropendous3/scripts/Make.defs
index 7e158b6946b..881274145b7 100644
--- a/boards/avr/at90usb/micropendous3/scripts/Make.defs
+++ b/boards/avr/at90usb/micropendous3/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/avr/src/avr/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = $(ARCHINCLUDES) "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/micropendous3.ld"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem "$(TOPDIR)/include"
   ARCHXXINCLUDES =  $(ARCHINCLUDES) -isystem "$(TOPDIR)/include/cxx"
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/micropendous3.ld
diff --git a/boards/avr/at90usb/teensy-2.0/scripts/Make.defs b/boards/avr/at90usb/teensy-2.0/scripts/Make.defs
index 9db3c915808..65838f22724 100644
--- a/boards/avr/at90usb/teensy-2.0/scripts/Make.defs
+++ b/boards/avr/at90usb/teensy-2.0/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = $(ARCHINCLUDES) "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem "$(TOPDIR)/include"
   ARCHXXINCLUDES =  $(ARCHINCLUDES) -isystem "$(TOPDIR)/include/cxx"
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/avr/atmega/amber/scripts/Make.defs b/boards/avr/atmega/amber/scripts/Make.defs
index f03e5ba20f3..b27a79bb523 100644
--- a/boards/avr/atmega/amber/scripts/Make.defs
+++ b/boards/avr/atmega/amber/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/avr/src/avr/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = $(ARCHINCLUDES) "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/amber.ld}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem "$(TOPDIR)/include"
   ARCHXXINCLUDES =  $(ARCHINCLUDES) -isystem "$(TOPDIR)/include/cxx"
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/amber.ld
diff --git a/boards/avr/atmega/arduino-mega2560/scripts/Make.defs b/boards/avr/atmega/arduino-mega2560/scripts/Make.defs
index 4d2092cbf47..d93c4ba8ab5 100644
--- a/boards/avr/atmega/arduino-mega2560/scripts/Make.defs
+++ b/boards/avr/atmega/arduino-mega2560/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = flash.ld
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = $(ARCHINCLUDES) "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem "$(TOPDIR)/include"
   ARCHXXINCLUDES =  $(ARCHINCLUDES) -isystem "$(TOPDIR)/include/cxx"
   ARCHSCRIPT = -T$(TOPDIR)/boards)/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/avr/atmega/moteino-mega/scripts/Make.defs b/boards/avr/atmega/moteino-mega/scripts/Make.defs
index 6d423a580c1..2edc8e805ae 100644
--- a/boards/avr/atmega/moteino-mega/scripts/Make.defs
+++ b/boards/avr/atmega/moteino-mega/scripts/Make.defs
@@ -39,13 +39,11 @@ include ${TOPDIR}/arch/avr/src/avr/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = $(ARCHINCLUDES) "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem "$(TOPDIR)/include"
   ARCHXXINCLUDES =  $(ARCHINCLUDES) -isystem "$(TOPDIR)/include/cxx"
   ARCHSCRIPT = -T$(TOPDIR)/boards)/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/ld.script
diff --git a/boards/hc/m9s12/demo9s12ne64/scripts/Make.defs b/boards/hc/m9s12/demo9s12ne64/scripts/Make.defs
index b621a8fd9a5..1a7dd797842 100644
--- a/boards/hc/m9s12/demo9s12ne64/scripts/Make.defs
+++ b/boards/hc/m9s12/demo9s12ne64/scripts/Make.defs
@@ -56,14 +56,12 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/ostest/$(LDSCRIPT)}"
   MAXOPTIMIZATION = -O2
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/ostest/$(LDSCRIPT)
diff --git a/boards/hc/m9s12/ne64badge/scripts/Make.defs b/boards/hc/m9s12/ne64badge/scripts/Make.defs
index 2d3b63743c8..0026a6a1633 100644
--- a/boards/hc/m9s12/ne64badge/scripts/Make.defs
+++ b/boards/hc/m9s12/ne64badge/scripts/Make.defs
@@ -56,14 +56,12 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
   MAXOPTIMIZATION = -O2
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/mips/pic32mx/mirtoo/scripts/Make.defs b/boards/mips/pic32mx/mirtoo/scripts/Make.defs
index 6b012b48eef..f64b13b9495 100644
--- a/boards/mips/pic32mx/mirtoo/scripts/Make.defs
+++ b/boards/mips/pic32mx/mirtoo/scripts/Make.defs
@@ -40,13 +40,11 @@ include ${TOPDIR}/arch/mips/src/mips32/Toolchain.defs
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/mips/pic32mx/pic32mx-starterkit/scripts/Make.defs b/boards/mips/pic32mx/pic32mx-starterkit/scripts/Make.defs
index e090bb6e5d0..a4ab6015294 100644
--- a/boards/mips/pic32mx/pic32mx-starterkit/scripts/Make.defs
+++ b/boards/mips/pic32mx/pic32mx-starterkit/scripts/Make.defs
@@ -56,13 +56,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/mips/pic32mx/pic32mx7mmb/scripts/Make.defs b/boards/mips/pic32mx/pic32mx7mmb/scripts/Make.defs
index f7a80997914..b6782088663 100644
--- a/boards/mips/pic32mx/pic32mx7mmb/scripts/Make.defs
+++ b/boards/mips/pic32mx/pic32mx7mmb/scripts/Make.defs
@@ -56,13 +56,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/mips/pic32mx/sure-pic32mx/scripts/Make.defs b/boards/mips/pic32mx/sure-pic32mx/scripts/Make.defs
index d95f6f56602..ffdf339c466 100644
--- a/boards/mips/pic32mx/sure-pic32mx/scripts/Make.defs
+++ b/boards/mips/pic32mx/sure-pic32mx/scripts/Make.defs
@@ -56,13 +56,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/mips/pic32mx/ubw32/scripts/Make.defs b/boards/mips/pic32mx/ubw32/scripts/Make.defs
index 586e1c5bbd5..2214451a101 100644
--- a/boards/mips/pic32mx/ubw32/scripts/Make.defs
+++ b/boards/mips/pic32mx/ubw32/scripts/Make.defs
@@ -56,13 +56,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/mips/pic32mz/flipnclick-pic32mz/scripts/Make.defs b/boards/mips/pic32mz/flipnclick-pic32mz/scripts/Make.defs
index 4a0c39f3721..60a49c63ef3 100644
--- a/boards/mips/pic32mz/flipnclick-pic32mz/scripts/Make.defs
+++ b/boards/mips/pic32mz/flipnclick-pic32mz/scripts/Make.defs
@@ -66,13 +66,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/mips/pic32mz/pic32mz-starterkit/scripts/Make.defs b/boards/mips/pic32mz/pic32mz-starterkit/scripts/Make.defs
index 4e967001365..fe74919c1b3 100644
--- a/boards/mips/pic32mz/pic32mz-starterkit/scripts/Make.defs
+++ b/boards/mips/pic32mz/pic32mz-starterkit/scripts/Make.defs
@@ -66,13 +66,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/misoc/lm32/misoc/scripts/Make.defs b/boards/misoc/lm32/misoc/scripts/Make.defs
index f0bee86cbfe..8c4d35b6094 100644
--- a/boards/misoc/lm32/misoc/scripts/Make.defs
+++ b/boards/misoc/lm32/misoc/scripts/Make.defs
@@ -48,13 +48,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = $(ARCHINCLUDES) "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem "$(TOPDIR)/include"
   ARCHXXINCLUDES =  $(ARCHINCLUDES) -isystem "$(TOPDIR)/include/cxx"
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD_CUSTOM_NAME)/scripts/$(LDSCRIPT)
diff --git a/boards/or1k/mor1kx/or1k/scripts/Make.defs b/boards/or1k/mor1kx/or1k/scripts/Make.defs
index 3bda72b1372..56283bc87e4 100644
--- a/boards/or1k/mor1kx/or1k/scripts/Make.defs
+++ b/boards/or1k/mor1kx/or1k/scripts/Make.defs
@@ -111,11 +111,3 @@ ifeq ($(CONFIG_HOST_WINDOWS),y)
 else
   HOSTEXEEXT =
 endif
-
-ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-  # Windows-native host tools
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
-else
-  # Linux/Cygwin-native host tools
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-endif
diff --git a/boards/renesas/m16c/skp16c26/scripts/Make.defs b/boards/renesas/m16c/skp16c26/scripts/Make.defs
index 71dda4fb09b..a38356ffd8c 100644
--- a/boards/renesas/m16c/skp16c26/scripts/Make.defs
+++ b/boards/renesas/m16c/skp16c26/scripts/Make.defs
@@ -77,8 +77,6 @@ ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS		+= -g
 endif
 
-MKDEP			= $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-
 HOSTCC			= gcc
 HOSTINCLUDES		= -I.
 HOSTCFLAGS		= -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
diff --git a/boards/renesas/rx65n/rx65n-grrose/scripts/Make.defs b/boards/renesas/rx65n/rx65n-grrose/scripts/Make.defs
index e673685bfe6..c4b567d2650 100644
--- a/boards/renesas/rx65n/rx65n-grrose/scripts/Make.defs
+++ b/boards/renesas/rx65n/rx65n-grrose/scripts/Make.defs
@@ -45,7 +45,6 @@ ifneq ($(CONFIG_DEBUG_NOOPT),y)
 endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-MKDEP = $(TOPDIR)/tools/mkwindeps.sh
 ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -I. -isystem "${shell cygpath -w $(TOPDIR)/arch/$(CONFIG_ARCH)/include}"
 ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
 ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/linker_script.ld}"
@@ -56,7 +55,6 @@ ARCHCPUFLAGS = -mcpu=rx64m
 ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow -Wundef
 ARCHWARNINGSXX = -Wall -Wshadow -Wundef
 else
-MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
 ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
 ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
 ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/linker_script.ld
@@ -107,8 +105,6 @@ OBJEXT = .o
 LIBEXT = .a
 EXEEXT =
 
-#MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-
 HOSTCC = gcc
 HOSTINCLUDES = -I.
 HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
diff --git a/boards/renesas/rx65n/rx65n-rsk1mb/scripts/Make.defs b/boards/renesas/rx65n/rx65n-rsk1mb/scripts/Make.defs
index a67402fec50..d9a9a3dd68c 100644
--- a/boards/renesas/rx65n/rx65n-rsk1mb/scripts/Make.defs
+++ b/boards/renesas/rx65n/rx65n-rsk1mb/scripts/Make.defs
@@ -47,7 +47,6 @@ ifneq ($(CONFIG_DEBUG_NOOPT),y)
 endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-MKDEP = $(TOPDIR)/tools/mkwindeps.sh
 ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -I. -isystem "${shell cygpath -w $(TOPDIR)/arch/$(CONFIG_ARCH)/include}"
 ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
 ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/linker_script.ld}"
@@ -58,7 +57,6 @@ ARCHCPUFLAGS = -mcpu=rx64m
 ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow -Wundef
 ARCHWARNINGSXX = -Wall -Wshadow -Wundef
 else
-MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
 ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
 ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
 ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/linker_script.ld
@@ -110,9 +108,6 @@ OBJEXT = .o
 LIBEXT = .a
 EXEEXT =
 
-
-#MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-
 HOSTCC = gcc
 HOSTINCLUDES = -I.
 HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
diff --git a/boards/renesas/rx65n/rx65n-rsk2mb/scripts/Make.defs b/boards/renesas/rx65n/rx65n-rsk2mb/scripts/Make.defs
index 58db5389f98..9cb9feb8b39 100644
--- a/boards/renesas/rx65n/rx65n-rsk2mb/scripts/Make.defs
+++ b/boards/renesas/rx65n/rx65n-rsk2mb/scripts/Make.defs
@@ -47,7 +47,6 @@ ifneq ($(CONFIG_DEBUG_NOOPT),y)
 endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-MKDEP = $(TOPDIR)/tools/mkwindeps.sh
 ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -I. -isystem "${shell cygpath -w $(TOPDIR)/arch/$(CONFIG_ARCH)/include}"
 ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
 ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/linker_script.ld}"
@@ -58,7 +57,6 @@ ARCHCPUFLAGS = -mcpu=rx64m
 ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow -Wundef
 ARCHWARNINGSXX = -Wall -Wshadow -Wundef
 else
-MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
 ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
 ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
 ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/linker_script.ld
@@ -110,9 +108,6 @@ OBJEXT = .o
 LIBEXT = .a
 EXEEXT =
 
-
-#MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-
 HOSTCC = gcc
 HOSTINCLUDES = -I.
 HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
diff --git a/boards/renesas/rx65n/rx65n/scripts/Make.defs b/boards/renesas/rx65n/rx65n/scripts/Make.defs
index ad58f861a74..1c585be7621 100644
--- a/boards/renesas/rx65n/rx65n/scripts/Make.defs
+++ b/boards/renesas/rx65n/rx65n/scripts/Make.defs
@@ -45,7 +45,6 @@ ifneq ($(CONFIG_DEBUG_NOOPT),y)
 endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-MKDEP = $(TOPDIR)/tools/mkwindeps.sh
 ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -I. -isystem "${shell cygpath -w $(TOPDIR)/arch/$(CONFIG_ARCH)/include}"
 ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
 ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/linker_script.ld}"
@@ -56,7 +55,6 @@ ARCHCPUFLAGS = -mcpu=rx64m
 ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow -Wundef
 ARCHWARNINGSXX = -Wall -Wshadow -Wundef
 else
-MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
 ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
 ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
 ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/linker_script.ld
@@ -107,8 +105,6 @@ OBJEXT = .o
 LIBEXT = .a
 EXEEXT =
 
-#MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-
 HOSTCC = gcc
 HOSTINCLUDES = -I.
 HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
diff --git a/boards/renesas/sh1/us7032evb1/scripts/Make.defs b/boards/renesas/sh1/us7032evb1/scripts/Make.defs
index 2ac74197d02..c53ad332167 100644
--- a/boards/renesas/sh1/us7032evb1/scripts/Make.defs
+++ b/boards/renesas/sh1/us7032evb1/scripts/Make.defs
@@ -75,9 +75,6 @@ ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS += -g
 endif
 
-
-MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-
 HOSTCC = gcc
 HOSTINCLUDES = -I.
 HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
diff --git a/boards/risc-v/fe310/hifive1-revb/scripts/Make.defs b/boards/risc-v/fe310/hifive1-revb/scripts/Make.defs
index 1d7a40699c0..a27d79fdd8b 100644
--- a/boards/risc-v/fe310/hifive1-revb/scripts/Make.defs
+++ b/boards/risc-v/fe310/hifive1-revb/scripts/Make.defs
@@ -45,13 +45,11 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/risc-v/gap8/gapuino/scripts/Make.defs b/boards/risc-v/gap8/gapuino/scripts/Make.defs
index 8ad692b61bb..0b4d8abc97a 100644
--- a/boards/risc-v/gap8/gapuino/scripts/Make.defs
+++ b/boards/risc-v/gap8/gapuino/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/risc-v/k210/maix-bit/scripts/Make.defs b/boards/risc-v/k210/maix-bit/scripts/Make.defs
index 809593dcb86..88f54d69610 100644
--- a/boards/risc-v/k210/maix-bit/scripts/Make.defs
+++ b/boards/risc-v/k210/maix-bit/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/risc-v/litex/arty_a7/scripts/Make.defs b/boards/risc-v/litex/arty_a7/scripts/Make.defs
index 76fd0ebbc3b..0f4805b516d 100644
--- a/boards/risc-v/litex/arty_a7/scripts/Make.defs
+++ b/boards/risc-v/litex/arty_a7/scripts/Make.defs
@@ -26,13 +26,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/risc-v/nr5m100/nr5m100-nexys4/scripts/Make.defs b/boards/risc-v/nr5m100/nr5m100-nexys4/scripts/Make.defs
index 027d0b02405..56c45267829 100644
--- a/boards/risc-v/nr5m100/nr5m100-nexys4/scripts/Make.defs
+++ b/boards/risc-v/nr5m100/nr5m100-nexys4/scripts/Make.defs
@@ -41,13 +41,11 @@ LDSCRIPT = ld.script
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
diff --git a/boards/sim/sim/sim/configs/cxxtest/Make.defs b/boards/sim/sim/sim/configs/cxxtest/Make.defs
index 7d016210e61..7615bc4d7a2 100644
--- a/boards/sim/sim/sim/configs/cxxtest/Make.defs
+++ b/boards/sim/sim/sim/configs/cxxtest/Make.defs
@@ -151,8 +151,6 @@ ifeq ($(CONFIG_SIM_M32),y)
   HOSTLDFLAGS += -m32
 endif
 
-MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-
 HOSTCC = cc
 HOSTINCLUDES = -I.
 HOSTCFLAGS = $(ARCHWARNINGS) $(ARCHOPTIMIZATION) \
diff --git a/boards/sim/sim/sim/scripts/Make.defs b/boards/sim/sim/sim/scripts/Make.defs
index 198cd779e91..9545b65ad8f 100644
--- a/boards/sim/sim/sim/scripts/Make.defs
+++ b/boards/sim/sim/sim/scripts/Make.defs
@@ -144,9 +144,6 @@ ifeq ($(CONFIG_SIM_M32),y)
   HOSTLDFLAGS += -m32
 endif
 
-
-MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-
 HOSTCC = cc
 HOSTINCLUDES = -I.
 HOSTCFLAGS = $(ARCHWARNINGS) $(ARCHOPTIMIZATION) \
diff --git a/boards/x86/qemu/qemu-i486/scripts/Make.defs b/boards/x86/qemu/qemu-i486/scripts/Make.defs
index 5a4e86f01fc..a5685047202 100644
--- a/boards/x86/qemu/qemu-i486/scripts/Make.defs
+++ b/boards/x86/qemu/qemu-i486/scripts/Make.defs
@@ -48,14 +48,12 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/qemu.ld}"
   MAXOPTIMIZATION = -O2
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/qemu.ld
@@ -104,8 +102,6 @@ ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS += -g
 endif
 
-MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-
 HOSTCC = gcc
 HOSTINCLUDESv = -I.
 HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
diff --git a/boards/x86_64/intel64/qemu-intel64/scripts/Make.defs b/boards/x86_64/intel64/qemu-intel64/scripts/Make.defs
index dd6fc7e66cb..44c4422b5fa 100644
--- a/boards/x86_64/intel64/qemu-intel64/scripts/Make.defs
+++ b/boards/x86_64/intel64/qemu-intel64/scripts/Make.defs
@@ -34,14 +34,12 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/qemu.ld}"
   MAXOPTIMIZATION = -O2
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(TOPDIR)/boards/$(CONFIG_ARCH)/$(CONFIG_ARCH_CHIP)/$(CONFIG_ARCH_BOARD)/scripts/qemu.ld
@@ -83,8 +81,6 @@ ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDFLAGS += -g
 endif
 
-MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-
 HOSTCC = gcc
 HOSTINCLUDESv = -I.
 HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
diff --git a/boards/xtensa/esp32/esp32-core/scripts/Make.defs b/boards/xtensa/esp32/esp32-core/scripts/Make.defs
index 7fcb56471af..4e488a45dbc 100644
--- a/boards/xtensa/esp32/esp32-core/scripts/Make.defs
+++ b/boards/xtensa/esp32/esp32-core/scripts/Make.defs
@@ -50,7 +50,6 @@ endif
 
 ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   # Windows-native toolchains
-  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
   ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(LDSCRIPT1)}"
@@ -59,7 +58,6 @@ ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
   ARCHSCRIPT += -T "${shell cygpath -w $(LDSCRIPT4)}"
 else
   # Linux/Cygwin-native toolchain
-  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
   ARCHSCRIPT = -T$(LDSCRIPT1) -T$(LDSCRIPT2) -T$(LDSCRIPT3) -T$(LDSCRIPT4)
diff --git a/boards/z16/z16f/z16f2800100zcog/scripts/Make.defs b/boards/z16/z16f/z16f2800100zcog/scripts/Make.defs
index cd42713b8d7..a187983730a 100644
--- a/boards/z16/z16f/z16f2800100zcog/scripts/Make.defs
+++ b/boards/z16/z16f/z16f2800100zcog/scripts/Make.defs
@@ -77,11 +77,6 @@ ifeq ($(CONFIG_WINDOWS_NATIVE),y)
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
   HOSTEXEEXT = .exe
-
-  # Windows-native host tools
-
-  #MKDEP = $(TOPDIR)\tools\mkdeps.exe --winnative
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mknulldeps.sh
 else
 
 # Linux/Cygwin host tool definitions
@@ -90,9 +85,6 @@ else
   HOSTINCLUDES = -I.
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
-
-  # This is the tool to use for dependencies (i.e., none)
-
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mknulldeps.sh
-
 endif
+
+MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mknulldeps.sh
diff --git a/boards/z80/ez80/ez80f910200kitg/scripts/Make.defs b/boards/z80/ez80/ez80f910200kitg/scripts/Make.defs
index 05bcfb7632f..52e70391a10 100644
--- a/boards/z80/ez80/ez80f910200kitg/scripts/Make.defs
+++ b/boards/z80/ez80/ez80f910200kitg/scripts/Make.defs
@@ -91,11 +91,6 @@ ifeq ($(CONFIG_WINDOWS_NATIVE),y)
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
   HOSTEXEEXT = .exe
-
-  # Windows-native host tools
-
-  #MKDEP = $(TOPDIR)\tools\mkdeps.exe --winnative
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mknulldeps.sh
 else
 
 # Linux/Cygwin host tool definitions
@@ -104,9 +99,6 @@ else
   HOSTINCLUDES = -I.
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
-
-  # This is the tool to use for dependencies (i.e., none)
-
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mknulldeps.sh
-
 endif
+
+MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mknulldeps.sh
diff --git a/boards/z80/ez80/ez80f910200zco/scripts/Make.defs b/boards/z80/ez80/ez80f910200zco/scripts/Make.defs
index a638acaa12e..32cc3aec6c5 100644
--- a/boards/z80/ez80/ez80f910200zco/scripts/Make.defs
+++ b/boards/z80/ez80/ez80f910200zco/scripts/Make.defs
@@ -91,11 +91,6 @@ ifeq ($(CONFIG_WINDOWS_NATIVE),y)
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
   HOSTEXEEXT = .exe
-
-  # Windows-native host tools
-
-  #MKDEP = $(TOPDIR)\tools\mkdeps.exe --winnative
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mknulldeps.sh
 else
 
 # Linux/Cygwin host tool definitions
@@ -104,9 +99,6 @@ else
   HOSTINCLUDES = -I.
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
-
-  # This is the tool to use for dependencies (i.e., none)
-
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mknulldeps.sh
-
 endif
+
+MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mknulldeps.sh
diff --git a/boards/z80/ez80/makerlisp/scripts/Make.defs b/boards/z80/ez80/makerlisp/scripts/Make.defs
index 96c8727e227..d486f902a2f 100644
--- a/boards/z80/ez80/makerlisp/scripts/Make.defs
+++ b/boards/z80/ez80/makerlisp/scripts/Make.defs
@@ -99,11 +99,6 @@ ifeq ($(CONFIG_WINDOWS_NATIVE),y)
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
   HOSTEXEEXT = .exe
-
-  # Windows-native host tools
-
-  #MKDEP = $(TOPDIR)\tools\mkdeps.exe --winnative
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mknulldeps.sh
 else
 
 # Linux/Cygwin host tool definitions
@@ -112,9 +107,6 @@ else
   HOSTINCLUDES = -I.
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
-
-  # This is the tool to use for dependencies (i.e., none)
-
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mknulldeps.sh
-
 endif
+
+MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mknulldeps.sh
diff --git a/boards/z80/ez80/z20x/scripts/Make.defs b/boards/z80/ez80/z20x/scripts/Make.defs
index e70fb1bd0a9..cf1ce7c1359 100644
--- a/boards/z80/ez80/z20x/scripts/Make.defs
+++ b/boards/z80/ez80/z20x/scripts/Make.defs
@@ -93,11 +93,6 @@ ifeq ($(CONFIG_WINDOWS_NATIVE),y)
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
   HOSTEXEEXT = .exe
-
-  # Windows-native host tools
-
-  #MKDEP = $(TOPDIR)\tools\mkdeps.exe --winnative
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mknulldeps.sh
 else
 
 # Linux/Cygwin host tool definitions
@@ -106,9 +101,6 @@ else
   HOSTINCLUDES = -I.
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
-
-  # This is the tool to use for dependencies (i.e., none)
-
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mknulldeps.sh
-
 endif
+
+MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mknulldeps.sh
diff --git a/boards/z80/z180/p112/scripts/Make.defs b/boards/z80/z180/p112/scripts/Make.defs
index fcd484f2f6f..d4ec33c9acb 100644
--- a/boards/z80/z180/p112/scripts/Make.defs
+++ b/boards/z80/z180/p112/scripts/Make.defs
@@ -130,11 +130,6 @@ ifeq ($(CONFIG_WINDOWS_NATIVE),y)
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
   HOSTEXEEXT = .exe
-
-  # Windows-native host tools
-
-  MKDEP = $(TOPDIR)\tools\mkdeps.exe --winnative # --dep-debug
-
 else
 
 # Linux/Cygwin host tool definitions
@@ -143,9 +138,4 @@ else
   HOSTINCLUDES = -I.
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
-
-  # This is the tool to use for dependencies (i.e., none)
-
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
-
 endif
diff --git a/boards/z80/z8/z8encore000zco/scripts/Make.defs b/boards/z80/z8/z8encore000zco/scripts/Make.defs
index fabbf3c0985..f4bc99a8088 100644
--- a/boards/z80/z8/z8encore000zco/scripts/Make.defs
+++ b/boards/z80/z8/z8encore000zco/scripts/Make.defs
@@ -91,10 +91,6 @@ ifeq ($(CONFIG_WINDOWS_NATIVE),y)
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
   HOSTEXEEXT = .exe
-
-  # Windows-native host tools
-
-  MKDEP = $(TOPDIR)\tools\mkdeps.exe --winnative
 else
 
 # Linux/Cygwin host tool definitions
@@ -103,9 +99,4 @@ else
   HOSTINCLUDES = -I.
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
-
-  # This is the tool to use for dependencies (i.e., none)
-
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
-
 endif
diff --git a/boards/z80/z8/z8f64200100kit/scripts/Make.defs b/boards/z80/z8/z8f64200100kit/scripts/Make.defs
index ebc7a311c2c..742a91716ba 100644
--- a/boards/z80/z8/z8f64200100kit/scripts/Make.defs
+++ b/boards/z80/z8/z8f64200100kit/scripts/Make.defs
@@ -90,10 +90,6 @@ ifeq ($(CONFIG_WINDOWS_NATIVE),y)
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
   HOSTEXEEXT = .exe
-
-  # Windows-native host tools
-
-  MKDEP = $(TOPDIR)\tools\mkdeps.exe --winnative
 else
 
 # Linux/Cygwin host tool definitions
@@ -102,9 +98,4 @@ else
   HOSTINCLUDES = -I.
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
-
-  # This is the tool to use for dependencies (i.e., none)
-
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
-
 endif
diff --git a/boards/z80/z80/z80sim/scripts/Make.defs b/boards/z80/z80/z80sim/scripts/Make.defs
index 7dfec30badc..20e80ae012a 100644
--- a/boards/z80/z80/z80sim/scripts/Make.defs
+++ b/boards/z80/z80/z80sim/scripts/Make.defs
@@ -127,11 +127,6 @@ ifeq ($(CONFIG_WINDOWS_NATIVE),y)
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
   HOSTEXEEXT = .exe
-
-  # Windows-native host tools
-
-  MKDEP = $(TOPDIR)\tools\mkdeps$(HOSTEXEEXT) --winnative
-
 else
 
 # Linux/Cygwin host tool definitions
@@ -140,13 +135,4 @@ else
   HOSTINCLUDES = -I.
   HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
   HOSTLDFLAGS =
-
-  # This is the tool to use for dependencies
-
-  ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
-    MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
-  else
-    MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
-  endif
-
 endif
diff --git a/tools/Config.mk b/tools/Config.mk
index ee04fad8b10..77f33579e10 100644
--- a/tools/Config.mk
+++ b/tools/Config.mk
@@ -105,6 +105,16 @@ endif
   DIRUNLINK ?= $(TOPDIR)$(DELIM)tools$(DELIM)unlink.sh
 endif
 
+# MKDEP - Create the depend rule in the portable way
+
+ifeq ($(CONFIG_WINDOWS_NATIVE),y)
+  MKDEP ?= $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT) --winnative
+else ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
+  MKDEP ?= $(TOPDIR)$(DELIM)tools$(DELIM)mkwindeps.sh
+else
+  MKDEP ?= $(TOPDIR)$(DELIM)tools$(DELIM)mkdeps$(HOSTEXEEXT)
+endif
+
 # INCDIR - Convert a list of directory paths to a list of compiler include
 #   directories
 # Example: CFFLAGS += ${shell $(INCDIR) [options] "compiler" "dir1" "dir2" "dir2" ...}
diff --git a/tools/Makefile.export b/tools/Makefile.export
index 7ca2c32da2a..893135c7cb4 100644
--- a/tools/Makefile.export
+++ b/tools/Makefile.export
@@ -94,7 +94,6 @@ endif
 	@echo "HOSTCFLAGS=\"$(HOSTCFLAGS)\"" >> $(EXPORTDIR)/makeinfo.sh
 	@echo "HOSTLDFLAGS=\"$(HOSTLDFLAGS)\"" >> $(EXPORTDIR)/makeinfo.sh
 	@echo "HOSTEXEEXT=\"$(HOSTEXEEXT)\"" >> $(EXPORTDIR)/makeinfo.sh
-	@echo "MKDEP=\"$(MKDEP)\"" >> $(EXPORTDIR)/makeinfo.sh
 	@echo "LDSCRIPT=\"$(LDSCRIPT)\"" >> $(EXPORTDIR)/makeinfo.sh
 	$(Q) chmod 755 $(EXPORTDIR)/makeinfo.sh
 
diff --git a/tools/mkexport.sh b/tools/mkexport.sh
index 71685ce0e54..6b96e272a1d 100755
--- a/tools/mkexport.sh
+++ b/tools/mkexport.sh
@@ -254,7 +254,6 @@ echo "HOSTINCLUDES     = ${HOSTINCLUDES}" >>"${EXPORTDIR}/scripts/Make.defs"
 echo "HOSTCFLAGS       = ${HOSTCFLAGS}" >>"${EXPORTDIR}/scripts/Make.defs"
 echo "HOSTLDFLAGS      = ${HOSTLDFLAGS}" >>"${EXPORTDIR}/scripts/Make.defs"
 echo "HOSTEXEEXT       = ${HOSTEXEEXT}" >>"${EXPORTDIR}/scripts/Make.defs"
-echo "MKDEP            = ${MKDEP}" >>"${EXPORTDIR}/scripts/Make.defs"
 echo "LDSCRIPT         = ${LDSCRIPT}" >>"${EXPORTDIR}/scripts/Make.defs"
 
 # Additional compilation options when the kernel is built