diff --git a/configs/c5471evm/Make.defs b/configs/c5471evm/Make.defs
index b172585c3c9..4153ec2ceca 100644
--- a/configs/c5471evm/Make.defs
+++ b/configs/c5471evm/Make.defs
@@ -55,7 +55,7 @@ else
 endif
 
 ifeq ($(ARCHCCMAJOR),4)
-  ARCHCPUFLAGS		= -mcpu=arm7tdmi -msoft-float -fno-builtin
+  ARCHCPUFLAGS		= -mcpu=arm7tdmi -mfloat-abi=soft -fno-builtin
 else
   ARCHCPUFLAGS		= -mapcs-32 -mcpu=arm7tdmi -msoft-float -fno-builtin
 endif
diff --git a/configs/mcu123-lpc214x/nsh/Make.defs b/configs/mcu123-lpc214x/nsh/Make.defs
index 648d97c73ac..512b78cfb4c 100644
--- a/configs/mcu123-lpc214x/nsh/Make.defs
+++ b/configs/mcu123-lpc214x/nsh/Make.defs
@@ -55,7 +55,7 @@ else
 endif
 
 ifeq ($(ARCHCCMAJOR),4)
-  ARCHCPUFLAGS		= -mcpu=arm7tdmi -msoft-float -fno-builtin
+  ARCHCPUFLAGS		= -mcpu=arm7tdmi -mfloat-abi=soft -fno-builtin
 else
   ARCHCPUFLAGS		= -mapcs-32 -mcpu=arm7tdmi -msoft-float -fno-builtin
 endif
diff --git a/configs/mcu123-lpc214x/ostest/Make.defs b/configs/mcu123-lpc214x/ostest/Make.defs
index 1ed441e540d..1967f627d93 100644
--- a/configs/mcu123-lpc214x/ostest/Make.defs
+++ b/configs/mcu123-lpc214x/ostest/Make.defs
@@ -55,7 +55,7 @@ else
 endif
 
 ifeq ($(ARCHCCMAJOR),4)
-  ARCHCPUFLAGS		= -mcpu=arm7tdmi -msoft-float -fno-builtin
+  ARCHCPUFLAGS		= -mcpu=arm7tdmi -mfloat-abi=soft -fno-builtin
 else
   ARCHCPUFLAGS		= -mapcs-32 -mcpu=arm7tdmi -msoft-float -fno-builtin
 endif
diff --git a/configs/mcu123-lpc214x/usbserial/Make.defs b/configs/mcu123-lpc214x/usbserial/Make.defs
index 68d286666dd..5fca3757fca 100644
--- a/configs/mcu123-lpc214x/usbserial/Make.defs
+++ b/configs/mcu123-lpc214x/usbserial/Make.defs
@@ -55,7 +55,7 @@ else
 endif
 
 ifeq ($(ARCHCCMAJOR),4)
-  ARCHCPUFLAGS		= -mcpu=arm7tdmi -msoft-float -fno-builtin
+  ARCHCPUFLAGS		= -mcpu=arm7tdmi -mfloat-abi=soft -fno-builtin
 else
   ARCHCPUFLAGS		= -mapcs-32 -mcpu=arm7tdmi -msoft-float -fno-builtin
 endif
diff --git a/configs/mcu123-lpc214x/usbstorage/Make.defs b/configs/mcu123-lpc214x/usbstorage/Make.defs
index 36a38c57d8f..1ec3cfc19d9 100644
--- a/configs/mcu123-lpc214x/usbstorage/Make.defs
+++ b/configs/mcu123-lpc214x/usbstorage/Make.defs
@@ -55,7 +55,7 @@ else
 endif
 
 ifeq ($(ARCHCCMAJOR),4)
-  ARCHCPUFLAGS		= -mcpu=arm7tdmi -msoft-float -fno-builtin
+  ARCHCPUFLAGS		= -mcpu=arm7tdmi -mfloat-abi=soft -fno-builtin
 else
   ARCHCPUFLAGS		= -mapcs-32 -mcpu=arm7tdmi -msoft-float -fno-builtin
 endif
diff --git a/configs/mx1ads/ostest/Make.defs b/configs/mx1ads/ostest/Make.defs
index 055e4c89fc5..6ceed36b796 100644
--- a/configs/mx1ads/ostest/Make.defs
+++ b/configs/mx1ads/ostest/Make.defs
@@ -61,7 +61,7 @@ else
 endif
 
 ifeq ($(ARCHCCMAJOR),4)
-  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv4t -msoft-float
+  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv4t -mfloat-abi=soft
 else
   ARCHCPUFLAGS		= -mapcs-32 -mtune=arm9tdmi -march=armv4t -msoft-float
 endif
diff --git a/configs/ntosd-dm320/nettest/Make.defs b/configs/ntosd-dm320/nettest/Make.defs
index 004a57f290a..9d4a077bbc8 100644
--- a/configs/ntosd-dm320/nettest/Make.defs
+++ b/configs/ntosd-dm320/nettest/Make.defs
@@ -55,7 +55,7 @@ else
 endif
 
 ifeq ($(ARCHCCMAJOR),4)
-  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv5te -msoft-float -fno-builtin
+  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv5te -mfloat-abi=soft -fno-builtin
 else
   ARCHCPUFLAGS		= -mapcs-32 -mtune=arm9tdmi -march=armv5te -msoft-float -fno-builtin
 endif
diff --git a/configs/ntosd-dm320/nsh/Make.defs b/configs/ntosd-dm320/nsh/Make.defs
index cc0717f9d55..41fa16f23f5 100644
--- a/configs/ntosd-dm320/nsh/Make.defs
+++ b/configs/ntosd-dm320/nsh/Make.defs
@@ -55,7 +55,7 @@ else
 endif
 
 ifeq ($(ARCHCCMAJOR),4)
-  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv5te -msoft-float -fno-builtin
+  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv5te -mfloat-abi=soft -fno-builtin
 else
   ARCHCPUFLAGS		= -mapcs-32 -mtune=arm9tdmi -march=armv5te -msoft-float -fno-builtin
 endif
diff --git a/configs/ntosd-dm320/ostest/Make.defs b/configs/ntosd-dm320/ostest/Make.defs
index d7c978dd55e..69d9751fc05 100644
--- a/configs/ntosd-dm320/ostest/Make.defs
+++ b/configs/ntosd-dm320/ostest/Make.defs
@@ -55,7 +55,7 @@ else
 endif
 
 ifeq ($(ARCHCCMAJOR),4)
-  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv5te -msoft-float -fno-builtin
+  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv5te -mfloat-abi=soft -fno-builtin
 else
   ARCHCPUFLAGS		= -mapcs-32 -mtune=arm9tdmi -march=armv5te -msoft-float -fno-builtin
 endif
diff --git a/configs/ntosd-dm320/poll/Make.defs b/configs/ntosd-dm320/poll/Make.defs
index 37b6b7fc906..ad72fc66faf 100644
--- a/configs/ntosd-dm320/poll/Make.defs
+++ b/configs/ntosd-dm320/poll/Make.defs
@@ -55,7 +55,7 @@ else
 endif
 
 ifeq ($(ARCHCCMAJOR),4)
-  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv5te -msoft-float -fno-builtin
+  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv5te -mfloat-abi=soft -fno-builtin
 else
   ARCHCPUFLAGS		= -mapcs-32 -mtune=arm9tdmi -march=armv5te -msoft-float -fno-builtin
 endif
diff --git a/configs/ntosd-dm320/udp/Make.defs b/configs/ntosd-dm320/udp/Make.defs
index e1c159f0562..22b75523772 100644
--- a/configs/ntosd-dm320/udp/Make.defs
+++ b/configs/ntosd-dm320/udp/Make.defs
@@ -55,7 +55,7 @@ else
 endif
 
 ifeq ($(ARCHCCMAJOR),4)
-  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv5te -msoft-float -fno-builtin
+  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv5te -mfloat-abi=soft -fno-builtin
 else
   ARCHCPUFLAGS		= -mapcs-32 -mtune=arm9tdmi -march=armv5te -msoft-float -fno-builtin
 endif
diff --git a/configs/ntosd-dm320/uip/Make.defs b/configs/ntosd-dm320/uip/Make.defs
index ca21cc396a2..48799818422 100644
--- a/configs/ntosd-dm320/uip/Make.defs
+++ b/configs/ntosd-dm320/uip/Make.defs
@@ -55,7 +55,7 @@ else
 endif
 
 ifeq ($(ARCHCCMAJOR),4)
-  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv5te -msoft-float -fno-builtin
+  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv5te -mfloat-abi=soft -fno-builtin
 else
   ARCHCPUFLAGS		= -mapcs-32 -mtune=arm9tdmi -march=armv5te -msoft-float -fno-builtin
 endif
diff --git a/configs/olimex-strp711/ostest/Make.defs b/configs/olimex-strp711/ostest/Make.defs
index 1dcd07d1c24..96c955804c8 100644
--- a/configs/olimex-strp711/ostest/Make.defs
+++ b/configs/olimex-strp711/ostest/Make.defs
@@ -55,7 +55,7 @@ else
 endif
 
 ifeq ($(ARCHCCMAJOR),4)
-  ARCHCPUFLAGS		= -mcpu=arm7tdmi -msoft-float -fno-builtin
+  ARCHCPUFLAGS		= -mcpu=arm7tdmi -mfloat-abi=soft -fno-builtin
 else
   ARCHCPUFLAGS		= -mapcs-32 -mcpu=arm7tdmi -msoft-float -fno-builtin
 endif