diff --git a/boards/arm/c5471/c5471evm/scripts/Make.defs b/boards/arm/c5471/c5471evm/scripts/Make.defs
index 47461828288..fff70fd167e 100644
--- a/boards/arm/c5471/c5471evm/scripts/Make.defs
+++ b/boards/arm/c5471/c5471evm/scripts/Make.defs
@@ -41,10 +41,6 @@ ifneq ($(CONFIG_WINDOWS_CYGWIN),y)
 endif
 endif
 
-ifeq ("${CONFIG_DEBUG_FEATURES}","y")
-  ARCHOPTIMIZATION = -g
-endif
-
 ifeq ($(OLDGCC),n)
   ARCHCPUFLAGS = -mcpu=arm7tdmi -mfloat-abi=soft
 else
@@ -67,7 +63,3 @@ NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) \
                  -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-gotoff.ld \
                  -no-check-sections
 LDNXFLATFLAGS = -e main -s 2048
-
-ifeq ($(CONFIG_DEBUG_FEATURES),y)
-  LDFLAGS += -g
-endif
diff --git a/boards/arm/lc823450/lc823450-xgevk/scripts/Make.defs b/boards/arm/lc823450/lc823450-xgevk/scripts/Make.defs
index 0349bd94302..d06b7191add 100644
--- a/boards/arm/lc823450/lc823450-xgevk/scripts/Make.defs
+++ b/boards/arm/lc823450/lc823450-xgevk/scripts/Make.defs
@@ -55,8 +55,6 @@ CXXELFFLAGS = $(CXXFLAGS) -mlong-calls # --target1-abs
 LDELFFLAGS = -r -e main
 LDELFFLAGS += -T $(call CONVERT_PATH,$(TOPDIR)/binfmt/libelf/gnu-elf.ld)
 
-# File extensions
-
 # Linker flags
 
 ifeq ($(CONFIG_LC823450_SDIF_PATCH),y)
diff --git a/boards/arm/lpc17xx_40xx/lx_cpu/scripts/Make.defs b/boards/arm/lpc17xx_40xx/lx_cpu/scripts/Make.defs
index 1653da2eaa9..2e02400451a 100644
--- a/boards/arm/lpc17xx_40xx/lx_cpu/scripts/Make.defs
+++ b/boards/arm/lpc17xx_40xx/lx_cpu/scripts/Make.defs
@@ -65,7 +65,3 @@ CMODULEFLAGS = $(CFLAGS) -mlong-calls # --target1-abs
 
 LDMODULEFLAGS = -r -e module_initialize
 LDMODULEFLAGS += -T $(call CONVERT_PATH,$(TOPDIR)/libs/libc/modlib/gnu-elf.ld)
-
-# File extensions
-
-# Linker flags
diff --git a/boards/arm/lpc214x/mcu123-lpc214x/scripts/Make.defs b/boards/arm/lpc214x/mcu123-lpc214x/scripts/Make.defs
index c744ffcb3f4..7c0e3375d05 100644
--- a/boards/arm/lpc214x/mcu123-lpc214x/scripts/Make.defs
+++ b/boards/arm/lpc214x/mcu123-lpc214x/scripts/Make.defs
@@ -41,10 +41,6 @@ ifneq ($(CONFIG_WINDOWS_CYGWIN),y)
 endif
 endif
 
-ifeq ("${CONFIG_DEBUG_FEATURES}","y")
-  ARCHOPTIMIZATION = -g
-endif
-
 ifeq ($(OLDGCC),n)
   ARCHCPUFLAGS = -mcpu=arm7tdmi -mfloat-abi=soft
 else
@@ -67,7 +63,3 @@ NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) \
                  -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-gotoff.ld \
                  -no-check-sections
 LDNXFLATFLAGS = -e main -s 2048
-
-ifeq ($(CONFIG_DEBUG_FEATURES),y)
-  LDFLAGS += -g
-endif
diff --git a/boards/arm/lpc214x/zp214xpa/scripts/Make.defs b/boards/arm/lpc214x/zp214xpa/scripts/Make.defs
index cce85d1650b..d8700ffbcaf 100644
--- a/boards/arm/lpc214x/zp214xpa/scripts/Make.defs
+++ b/boards/arm/lpc214x/zp214xpa/scripts/Make.defs
@@ -41,10 +41,6 @@ ifneq ($(CONFIG_WINDOWS_CYGWIN),y)
 endif
 endif
 
-ifeq ("${CONFIG_DEBUG_FEATURES}","y")
-  ARCHOPTIMIZATION = -g
-endif
-
 ifeq ($(OLDGCC),n)
   ARCHCPUFLAGS = -mcpu=arm7tdmi -mfloat-abi=soft
 else
@@ -67,7 +63,3 @@ NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) \
                  -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-gotoff.ld \
                  -no-check-sections
 LDNXFLATFLAGS = -e main -s 2048
-
-ifeq ($(CONFIG_DEBUG_FEATURES),y)
-  LDFLAGS += -g
-endif
diff --git a/boards/arm/lpc2378/olimex-lpc2378/scripts/Make.defs b/boards/arm/lpc2378/olimex-lpc2378/scripts/Make.defs
index ed19469d67f..edee4d038fb 100644
--- a/boards/arm/lpc2378/olimex-lpc2378/scripts/Make.defs
+++ b/boards/arm/lpc2378/olimex-lpc2378/scripts/Make.defs
@@ -41,10 +41,6 @@ ifneq ($(CONFIG_WINDOWS_CYGWIN),y)
 endif
 endif
 
-ifeq ("${CONFIG_DEBUG_FEATURES}","y")
-  ARCHOPTIMIZATION = -g
-endif
-
 ifeq ($(OLDGCC),n)
   ARCHCPUFLAGS = -mcpu=arm7tdmi -mfloat-abi=soft
 else
@@ -67,7 +63,3 @@ NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) \
                  -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-gotoff.ld \
                  -no-check-sections
 LDNXFLATFLAGS = -e main -s 2048
-
-ifeq ($(CONFIG_DEBUG_FEATURES),y)
-  LDFLAGS += -g
-endif
diff --git a/boards/arm/phy62xx/phy6222/src/Makefile b/boards/arm/phy62xx/phy6222/src/Makefile
index 3db8dbe94ef..38dedc97973 100644
--- a/boards/arm/phy62xx/phy6222/src/Makefile
+++ b/boards/arm/phy62xx/phy6222/src/Makefile
@@ -19,8 +19,6 @@
 ############################################################################
 
 include $(TOPDIR)/Make.defs
-#ROMSYMTABLE = bb_rom_sym_m0.gdbsym
-#LDFLAGS += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(ROMSYMTABLE)
 CSRCS = boot.c bringup.c
 
 CSRCS += userleds.c
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 7c687472fa6..8ccdd6f2d84 100644
--- a/boards/arm/stm32/olimex-stm32-p407/configs/kelf/Make.defs
+++ b/boards/arm/stm32/olimex-stm32-p407/configs/kelf/Make.defs
@@ -54,7 +54,3 @@ CXXELFFLAGS = $(CXXFLAGS) -mlong-calls # --target1-abs
 
 LDELFFLAGS = -r -e main
 LDELFFLAGS += -T $(call CONVERT_PATH,$(TOPDIR)$(DELIM)libs$(DELIM)libc$(DELIM)modlib$(DELIM)gnu-elf.ld)
-
-# File extensions
-
-# Linker flags
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 243a5ecdb65..aaf66a4cfc7 100644
--- a/boards/arm/stm32/olimex-stm32-p407/configs/kmodule/Make.defs
+++ b/boards/arm/stm32/olimex-stm32-p407/configs/kmodule/Make.defs
@@ -54,7 +54,3 @@ CXXELFFLAGS = $(CXXFLAGS) -mlong-calls # --target1-abs
 
 LDELFFLAGS = -r -e main
 LDELFFLAGS += -T $(call CONVERT_PATH,$(TOPDIR)$(DELIM)libs$(DELIM)libc$(DELIM)modlib$(DELIM)gnu-elf.ld)
-
-# File extensions
-
-# Linker flags
diff --git a/boards/arm/str71x/olimex-strp711/scripts/Make.defs b/boards/arm/str71x/olimex-strp711/scripts/Make.defs
index e28e87210c5..5a567b7ca88 100644
--- a/boards/arm/str71x/olimex-strp711/scripts/Make.defs
+++ b/boards/arm/str71x/olimex-strp711/scripts/Make.defs
@@ -41,10 +41,6 @@ ifneq ($(CONFIG_WINDOWS_CYGWIN),y)
 endif
 endif
 
-ifeq ("${CONFIG_DEBUG_FEATURES}","y")
-  ARCHOPTIMIZATION = -g
-endif
-
 ifeq ($(OLDGCC),n)
   ARCHCPUFLAGS = -mcpu=arm7tdmi -mfloat-abi=soft
 else
@@ -67,7 +63,3 @@ NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) \
                  -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-gotoff.ld \
                  -no-check-sections
 LDNXFLATFLAGS = -e main -s 2048
-
-ifeq ($(CONFIG_DEBUG_FEATURES),y)
-  LDFLAGS += -g
-endif