diff --git a/configs/eagle100/README.txt b/configs/eagle100/README.txt
index 5e0ddba522..9537aa0615 100644
--- a/configs/eagle100/README.txt
+++ b/configs/eagle100/README.txt
@@ -102,6 +102,9 @@ CodeSourcery on Linux
   is provided in your defconfig file.  'ostest' refers to the ostest/ configuration;
   this would be different for other configurations.
 
+  For an example of a CodeSourcery-under-Linux Make.defs file, see
+  configs/stm3210e-eval/nsh/Make.defs.
+
 NuttX buildroot Toolchain
 ^^^^^^^^^^^^^^^^^^^^^^^^^
 
diff --git a/configs/stm3210e-eval/README.txt b/configs/stm3210e-eval/README.txt
index 98ded86c67..70fd9d317d 100755
--- a/configs/stm3210e-eval/README.txt
+++ b/configs/stm3210e-eval/README.txt
@@ -27,18 +27,19 @@ GNU Toolchain Options
   add one of the following configuration options to your .config (or defconfig)
   file:
 
-    CONFIG_STM32_CODESOURCERY=y
-    CONFIG_STM32_DEVKITARM=y
-    CONFIG_STM32_RAISONANCE=y
-    CONFIG_STM32_BUILDROOT=y	(default)
+    CONFIG_STM32_CODESOURCERYW=y  : CodeSourcery under Windows
+    CONFIG_STM32_CODESOURCERYL=y  : CodeSourcery under Linux
+    CONFIG_STM32_DEVKITARM=y      : devkitARM under Windows
+    CONFIG_STM32_RAISONANCE=y     : Raisonance RIDE7 under Windows
+    CONFIG_STM32_BUILDROOT=y	  : NuttX buildroot under Windows or Cygwin (default)
 
   If you are not using CONFIG_STM32_BUILDROOT, then you may also have to modify
   the PATH in the setenv.h file if your make cannot find the tools.
 
-  NOTE: the CodeSourcery, devkitARM, and Raisonance toolchains are Windows native
-  toolchains.  The NuttX buildroot toolchain is a Cygwin or Linux native toolchain.
-  There are several limitations to using a Windows based toolchain in a Cygwin
-  environment.  The three biggest are:
+  NOTE: the CodeSourcery (for Windows), devkitARM, and Raisonance toolchains are
+  Windows native toolchains.  The CodeSourcey (for Linux) and NuttX buildroot
+  toolchains are Cygwin and/or Linux native toolchains. There are several limitations
+  to using a Windows based toolchain in a Cygwin environment.  The three biggest are:
 
   1. The Windows toolchain cannot follow Cygwin paths.  Path conversions are
      performed automatically in the Cygwin makefiles using the 'cygpath' utility
@@ -78,28 +79,6 @@ GNU Toolchain Options
   the paths to Cygwin's /bin and /usr/bin directories appear BEFORE the devkitARM
   path or will get the wrong version of make.
 
-CodeSourcery on Linux
-^^^^^^^^^^^^^^^^^^^^^
-
-  If you select the CodeSourcery toolchain, the make system will assume that you
-  are running a Windows version of the toolchain.  If you are running under Linux,
-  the the make will probably fail.  The fix is to edit your Make.defs file and
-  use something like:
-
-    CROSSDEV = arm-none-eabi-
-    WINTOOL = n
-    MKDEP = $(TOPDIR)/tools/mkdeps.sh
-    ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
-    ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
-    ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
-    ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/ostest/$(LDSCRIPT)
-    MAXOPTIMIZATION = -O2
-
-  Where LDSCRIPT is defined to be either ld.script or ld.script.dfu.  The values
-  for TOPDIR is provided by the make system; the value for CONFIG_ARCH_BOARD is
-  provided in your defconfig file. 'ostest' refers to the ostest/ configuration;
-  this would be different for other configurations.
-
 IDEs
 ^^^^
 
diff --git a/configs/stm3210e-eval/RIDE/Make.defs b/configs/stm3210e-eval/RIDE/Make.defs
index 78cfc1c280..68e56151a5 100644
--- a/configs/stm3210e-eval/RIDE/Make.defs
+++ b/configs/stm3210e-eval/RIDE/Make.defs
@@ -37,83 +37,104 @@ include ${TOPDIR}/.config
 
 # Setup for the selected toolchain
 
-ifneq ($(CONFIG_STM32_BUILDROOT),y)
-  # Windows-native toolchains
+ifeq ($(CONFIG_STM32_DFU),y)
+  LDSCRIPT = ld.script.dfu
+else
+  LDSCRIPT = ld.script
+endif
+
+ifeq ($(CONFIG_STM32_CODESOURCERYW),y)
+  # CodeSourcery under Windows
+  CROSSDEV = arm-none-eabi-
+  WINTOOL = y
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+ifeq ($(CONFIG_STM32_CODESOURCERYL),y)
+  # CodeSourcery under Linux
+  CROSSDEV = arm-none-eabi-
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
 ifeq ($(CONFIG_STM32_DEVKITARM),y)
-  CROSSDEV		= arm-eabi-
-else
-  CROSSDEV		= arm-none-eabi-
+  # devkitARM under Windows
+  CROSSDEV = arm-eabi-
+  WINTOOL = y
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
 endif
-  WINTOOL		= y
-  DIRLINK 		= $(TOPDIR)/tools/winlink.sh
-  DIRUNLINK		= $(TOPDIR)/tools/unlink.sh
-  MKDEP			= $(TOPDIR)/tools/mknulldeps.sh
-  ARCHCPUFLAGS		= -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
-  ARCHINCLUDES		= -I. -isystem "${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 $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/RIDE/stm32-nuttx.ld}"
-  MAXOPTIMIZATION	= -O2
-# The NuttX buildroot toolchain
-else
-  # Linux/Cygwin-native toolchain (assumed from the NuttX buildroot)
-  CROSSDEV			= arm-elf-
-  MKDEP			= $(TOPDIR)/tools/mkdeps.sh
-  ARCHCPUFLAGS		= -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft
-  ARCHINCLUDES		= -I. -isystem $(TOPDIR)/include
-  ARCHXXINCLUDES	= -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
-  ARCHSCRIPT		= -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/RIDE/stm32-nuttx.ld
-  MAXOPTIMIZATION	= -Os
+ifeq ($(CONFIG_STM32_RAISONANCE),y)
+  # Raisonance RIDE7 under Windows
+  CROSSDEV = arm-none-eabi-
+  WINTOOL = y
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+ifeq ($(CONFIG_STM32_BUILDROOT),y)
+  # NuttX buildroot under Linux or Cygwin
+  CROSSDEV = arm-elf-
+  ARCHCPUFLAGS = -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft
 endif
 
-CC			= $(CROSSDEV)gcc
-CXX			= $(CROSSDEV)g++
-CPP			= $(CROSSDEV)gcc -E
-LD			= $(CROSSDEV)ld
-AR			= $(CROSSDEV)ar rcs
-NM			= $(CROSSDEV)nm
-OBJCOPY			= $(CROSSDEV)objcopy
-OBJDUMP			= $(CROSSDEV)objdump
+ifeq ($(WINTOOL),y)
+  # Windows-native toolchains
+  DIRLINK = $(TOPDIR)/tools/winlink.sh
+  DIRUNLINK = $(TOPDIR)/tools/unlink.sh
+  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 $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/RIDE/$(LDSCRIPT)}"
+  MAXOPTIMIZATION = -O2
+else
+  # Linux/Cygwin-native toolchain 
+  MKDEP = $(TOPDIR)/tools/mkdeps.sh
+  ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
+  ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
+  ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/RIDE/$(LDSCRIPT)
+  MAXOPTIMIZATION = -Os
+endif
 
-ARCHCCVERSION		= ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
-ARCHCCMAJOR		= ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
+CC = $(CROSSDEV)gcc
+CXX = $(CROSSDEV)g++
+CPP = $(CROSSDEV)gcc -E
+LD = $(CROSSDEV)ld
+AR = $(CROSSDEV)ar rcs
+NM = $(CROSSDEV)nm
+OBJCOPY = $(CROSSDEV)objcopy
+OBJDUMP = $(CROSSDEV)objdump
+
+ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
+ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
 ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
-  ARCHOPTIMIZATION	= -g
+  ARCHOPTIMIZATION = -g
 else
-  ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
+  ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
 endif
 
-ARCHCFLAGS		= -fno-builtin
-ARCHCXXFLAGS		= -fno-builtin -fno-exceptions
-ARCHWARNINGS		= -Wall -Wstrict-prototypes -Wshadow
-ARCHWARNINGSXX		= -Wall -Wshadow
-ARCHDEFINES		=
-ARCHPICFLAGS		= -fpic -msingle-pic-base -mpic-register=r10
+ARCHCFLAGS = -fno-builtin
+ARCHCXXFLAGS = -fno-builtin -fno-exceptions
+ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow
+ARCHWARNINGSXX = -Wall -Wshadow
+ARCHDEFINES =
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
 
-CFLAGS			= $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) \
-			  $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) -pipe
-CPICFLAGS		= $(ARCHPICFLAGS) $(CFLAGS)
-CXXFLAGS		= $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) \
-			  $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) -pipe
-CXXPICFLAGS		= $(ARCHPICFLAGS) $(CXXFLAGS)
-CPPFLAGS		= $(ARCHINCLUDES) $(ARCHDEFINES)
-AFLAGS			= $(CFLAGS) -D__ASSEMBLY__
+CFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES)
+AFLAGS = $(CFLAGS) -D__ASSEMBLY__
 
-NXFLATLDFLAGS1		= -r -d -warn-common
-NXFLATLDFLAGS2		= $(NXFLATLDFLAGS1) \
-			  -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat.ld \
-			  -no-check-sections
-LDNXFLATFLAGS		= -e main -s 2048
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
 
-OBJEXT			= .o
-LIBEXT			= .a
-EXEEXT			=
+OBJEXT = .o
+LIBEXT = .a
+EXEEXT =
 
 ifneq ($(CROSSDEV),arm-elf-)
-  LDFLAGS		+= -nostartfiles -nodefaultlibs
+  LDFLAGS += -nostartfiles -nodefaultlibs
 endif
 ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  LDFLAGS		+= -g
+  LDFLAGS += -g
 endif
 
 define PREPROCESS
@@ -145,8 +166,8 @@ define CLEAN
 	@rm -f *.o *.a
 endef
 
-HOSTCC			= gcc
-HOSTINCLUDES		= -I.
-HOSTCFLAGS		= -Wall -Wstrict-prototypes -Wshadow -g -pipe
-HOSTLDFLAGS		=
+HOSTCC = gcc
+HOSTINCLUDES = -I.
+HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
+HOSTLDFLAGS =
 
diff --git a/configs/stm3210e-eval/RIDE/defconfig b/configs/stm3210e-eval/RIDE/defconfig
index 8dd155c997..512874f6ee 100755
--- a/configs/stm3210e-eval/RIDE/defconfig
+++ b/configs/stm3210e-eval/RIDE/defconfig
@@ -88,7 +88,8 @@ CONFIG_ARCH_CALIBRATION=n
 
 #
 # Identify toolchain
-CONFIG_STM32_CODESOURCERY=n
+CONFIG_STM32_CODESOURCERYW=n
+CONFIG_STM32_CODESOURCERYL=n
 CONFIG_STM32_DEVKITARM=n
 CONFIG_STM32_RAISONANCE=y
 CONFIG_STM32_BUILDROOT=n
diff --git a/configs/stm3210e-eval/nsh/Make.defs b/configs/stm3210e-eval/nsh/Make.defs
index f714dd116c..6504314ab8 100644
--- a/configs/stm3210e-eval/nsh/Make.defs
+++ b/configs/stm3210e-eval/nsh/Make.defs
@@ -38,88 +38,103 @@ include ${TOPDIR}/.config
 # Setup for the selected toolchain
 
 ifeq ($(CONFIG_STM32_DFU),y)
-  LDSCRIPT		= ld.script.dfu
+  LDSCRIPT = ld.script.dfu
 else
-  LDSCRIPT		= ld.script
+  LDSCRIPT = ld.script
 endif
 
-ifneq ($(CONFIG_STM32_BUILDROOT),y)
-  # Windows-native toolchains
+ifeq ($(CONFIG_STM32_CODESOURCERYW),y)
+  # CodeSourcery under Windows
+  CROSSDEV = arm-none-eabi-
+  WINTOOL = y
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+ifeq ($(CONFIG_STM32_CODESOURCERYL),y)
+  # CodeSourcery under Linux
+  CROSSDEV = arm-none-eabi-
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
 ifeq ($(CONFIG_STM32_DEVKITARM),y)
-  CROSSDEV		= arm-eabi-
-else
-  CROSSDEV		= arm-none-eabi-
+  # devkitARM under Windows
+  CROSSDEV = arm-eabi-
+  WINTOOL = y
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
 endif
-  WINTOOL		= y
-  DIRLINK 		= $(TOPDIR)/tools/winlink.sh
-  DIRUNLINK		= $(TOPDIR)/tools/unlink.sh
-  MKDEP			= $(TOPDIR)/tools/mknulldeps.sh
-  ARCHCPUFLAGS		= -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
-  ARCHINCLUDES		= -I. -isystem "${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 $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/nsh/$(LDSCRIPT)}"
-  MAXOPTIMIZATION	= -O2
-# The NuttX buildroot toolchain
-else
-  # Linux/Cygwin-native toolchain (assumed from the NuttX buildroot)
-  CROSSDEV			= arm-elf-
-  MKDEP			= $(TOPDIR)/tools/mkdeps.sh
-  ARCHCPUFLAGS		= -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft
-  ARCHINCLUDES		= -I. -isystem $(TOPDIR)/include
-  ARCHXXINCLUDES	= -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
-  ARCHSCRIPT		= -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/nsh/$(LDSCRIPT)
-  MAXOPTIMIZATION	= -Os
+ifeq ($(CONFIG_STM32_RAISONANCE),y)
+  # Raisonance RIDE7 under Windows
+  CROSSDEV = arm-none-eabi-
+  WINTOOL = y
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+ifeq ($(CONFIG_STM32_BUILDROOT),y)
+  # NuttX buildroot under Linux or Cygwin
+  CROSSDEV = arm-elf-
+  ARCHCPUFLAGS = -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft
 endif
 
-CC			= $(CROSSDEV)gcc
-CXX			= $(CROSSDEV)g++
-CPP			= $(CROSSDEV)gcc -E
-LD			= $(CROSSDEV)ld
-AR			= $(CROSSDEV)ar rcs
-NM			= $(CROSSDEV)nm
-OBJCOPY			= $(CROSSDEV)objcopy
-OBJDUMP			= $(CROSSDEV)objdump
+ifeq ($(WINTOOL),y)
+  # Windows-native toolchains
+  DIRLINK = $(TOPDIR)/tools/winlink.sh
+  DIRUNLINK = $(TOPDIR)/tools/unlink.sh
+  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 $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/nsh/$(LDSCRIPT)}"
+  MAXOPTIMIZATION = -O2
+else
+  # Linux/Cygwin-native toolchain 
+  MKDEP = $(TOPDIR)/tools/mkdeps.sh
+  ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
+  ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
+  ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/nsh/$(LDSCRIPT)
+  MAXOPTIMIZATION = -Os
+endif
 
-ARCHCCVERSION		= ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
-ARCHCCMAJOR		= ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
+CC = $(CROSSDEV)gcc
+CXX = $(CROSSDEV)g++
+CPP = $(CROSSDEV)gcc -E
+LD = $(CROSSDEV)ld
+AR = $(CROSSDEV)ar rcs
+NM = $(CROSSDEV)nm
+OBJCOPY = $(CROSSDEV)objcopy
+OBJDUMP = $(CROSSDEV)objdump
+
+ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
+ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
 ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
-  ARCHOPTIMIZATION	= -g
+  ARCHOPTIMIZATION = -g
 else
-  ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
+  ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
 endif
 
-ARCHCFLAGS		= -fno-builtin
-ARCHCXXFLAGS		= -fno-builtin -fno-exceptions
-ARCHWARNINGS		= -Wall -Wstrict-prototypes -Wshadow
-ARCHWARNINGSXX		= -Wall -Wshadow
-ARCHDEFINES		=
-ARCHPICFLAGS		= -fpic -msingle-pic-base -mpic-register=r10
+ARCHCFLAGS = -fno-builtin
+ARCHCXXFLAGS = -fno-builtin -fno-exceptions
+ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow
+ARCHWARNINGSXX = -Wall -Wshadow
+ARCHDEFINES =
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
 
-CFLAGS			= $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) \
-			  $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) -pipe
-CPICFLAGS		= $(ARCHPICFLAGS) $(CFLAGS)
-CXXFLAGS		= $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) \
-			  $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) -pipe
-CXXPICFLAGS		= $(ARCHPICFLAGS) $(CXXFLAGS)
-CPPFLAGS		= $(ARCHINCLUDES) $(ARCHDEFINES)
-AFLAGS			= $(CFLAGS) -D__ASSEMBLY__
+CFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES)
+AFLAGS = $(CFLAGS) -D__ASSEMBLY__
 
-NXFLATLDFLAGS1		= -r -d -warn-common
-NXFLATLDFLAGS2		= $(NXFLATLDFLAGS1) \
-			  -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat.ld \
-			  -no-check-sections
-LDNXFLATFLAGS		= -e main -s 2048
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
 
-OBJEXT			= .o
-LIBEXT			= .a
-EXEEXT			=
+OBJEXT = .o
+LIBEXT = .a
+EXEEXT =
 
 ifneq ($(CROSSDEV),arm-elf-)
-  LDFLAGS		+= -nostartfiles -nodefaultlibs
+  LDFLAGS += -nostartfiles -nodefaultlibs
 endif
 ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  LDFLAGS		+= -g
+  LDFLAGS += -g
 endif
 
 define PREPROCESS
@@ -151,8 +166,8 @@ define CLEAN
 	@rm -f *.o *.a
 endef
 
-HOSTCC			= gcc
-HOSTINCLUDES		= -I.
-HOSTCFLAGS		= -Wall -Wstrict-prototypes -Wshadow -g -pipe
-HOSTLDFLAGS		=
+HOSTCC = gcc
+HOSTINCLUDES = -I.
+HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
+HOSTLDFLAGS =
 
diff --git a/configs/stm3210e-eval/nsh/defconfig b/configs/stm3210e-eval/nsh/defconfig
index d9c0a2ae8c..07e969562c 100755
--- a/configs/stm3210e-eval/nsh/defconfig
+++ b/configs/stm3210e-eval/nsh/defconfig
@@ -88,7 +88,8 @@ CONFIG_ARCH_CALIBRATION=n
 
 #
 # Identify toolchain and liner options
-CONFIG_STM32_CODESOURCERY=n
+CONFIG_STM32_CODESOURCERYW=n
+CONFIG_STM32_CODESOURCERYL=n
 CONFIG_STM32_DEVKITARM=n
 CONFIG_STM32_RAISONANCE=n
 CONFIG_STM32_BUILDROOT=y
diff --git a/configs/stm3210e-eval/ostest/Make.defs b/configs/stm3210e-eval/ostest/Make.defs
index 2940b86fd0..2cec9a3146 100644
--- a/configs/stm3210e-eval/ostest/Make.defs
+++ b/configs/stm3210e-eval/ostest/Make.defs
@@ -38,88 +38,103 @@ include ${TOPDIR}/.config
 # Setup for the selected toolchain
 
 ifeq ($(CONFIG_STM32_DFU),y)
-  LDSCRIPT		= ld.script.dfu
+  LDSCRIPT = ld.script.dfu
 else
-  LDSCRIPT		= ld.script
+  LDSCRIPT = ld.script
 endif
 
-ifneq ($(CONFIG_STM32_BUILDROOT),y)
-  # Windows-native toolchains
+ifeq ($(CONFIG_STM32_CODESOURCERYW),y)
+  # CodeSourcery under Windows
+  CROSSDEV = arm-none-eabi-
+  WINTOOL = y
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+ifeq ($(CONFIG_STM32_CODESOURCERYL),y)
+  # CodeSourcery under Linux
+  CROSSDEV = arm-none-eabi-
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
 ifeq ($(CONFIG_STM32_DEVKITARM),y)
-  CROSSDEV		= arm-eabi-
-else
-  CROSSDEV		= arm-none-eabi-
+  # devkitARM under Windows
+  CROSSDEV = arm-eabi-
+  WINTOOL = y
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
 endif
-  WINTOOL		= y
-  DIRLINK 		= $(TOPDIR)/tools/winlink.sh
-  DIRUNLINK		= $(TOPDIR)/tools/unlink.sh
-  MKDEP			= $(TOPDIR)/tools/mknulldeps.sh
-  ARCHCPUFLAGS		= -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
-  ARCHINCLUDES		= -I. -isystem "${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 $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/ostest/$(LDSCRIPT)}"
-  MAXOPTIMIZATION	= -O2
-# The NuttX buildroot toolchain
-else
-  # Linux/Cygwin-native toolchain (assumed from the NuttX buildroot)
-  CROSSDEV			= arm-elf-
-  MKDEP			= $(TOPDIR)/tools/mkdeps.sh
-  ARCHCPUFLAGS		= -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft
-  ARCHINCLUDES		= -I. -isystem $(TOPDIR)/include
-  ARCHXXINCLUDES	= -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
-  ARCHSCRIPT		= -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/ostest/$(LDSCRIPT)
-  MAXOPTIMIZATION	= -Os
+ifeq ($(CONFIG_STM32_RAISONANCE),y)
+  # Raisonance RIDE7 under Windows
+  CROSSDEV = arm-none-eabi-
+  WINTOOL = y
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+ifeq ($(CONFIG_STM32_BUILDROOT),y)
+  # NuttX buildroot under Linux or Cygwin
+  CROSSDEV = arm-elf-
+  ARCHCPUFLAGS = -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft
 endif
 
-CC			= $(CROSSDEV)gcc
-CXX			= $(CROSSDEV)g++
-CPP			= $(CROSSDEV)gcc -E
-LD			= $(CROSSDEV)ld
-AR			= $(CROSSDEV)ar rcs
-NM			= $(CROSSDEV)nm
-OBJCOPY			= $(CROSSDEV)objcopy
-OBJDUMP			= $(CROSSDEV)objdump
+ifeq ($(WINTOOL),y)
+  # Windows-native toolchains
+  DIRLINK = $(TOPDIR)/tools/winlink.sh
+  DIRUNLINK = $(TOPDIR)/tools/unlink.sh
+  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 $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/ostest/$(LDSCRIPT)}"
+  MAXOPTIMIZATION = -O2
+else
+  # Linux/Cygwin-native toolchain 
+  MKDEP = $(TOPDIR)/tools/mkdeps.sh
+  ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
+  ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
+  ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/ostest/$(LDSCRIPT)
+  MAXOPTIMIZATION = -Os
+endif
 
-ARCHCCVERSION		= ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
-ARCHCCMAJOR		= ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
+CC = $(CROSSDEV)gcc
+CXX = $(CROSSDEV)g++
+CPP = $(CROSSDEV)gcc -E
+LD = $(CROSSDEV)ld
+AR = $(CROSSDEV)ar rcs
+NM = $(CROSSDEV)nm
+OBJCOPY = $(CROSSDEV)objcopy
+OBJDUMP = $(CROSSDEV)objdump
+
+ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
+ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
 
 ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
-  ARCHOPTIMIZATION	= -g
+  ARCHOPTIMIZATION = -g
 else
-  ARCHOPTIMIZATION	= $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
+  ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
 endif
 
-ARCHCFLAGS		= -fno-builtin
-ARCHCXXFLAGS		= -fno-builtin -fno-exceptions
-ARCHWARNINGS		= -Wall -Wstrict-prototypes -Wshadow
-ARCHWARNINGSXX		= -Wall -Wshadow
-ARCHDEFINES		=
-ARCHPICFLAGS		= -fpic -msingle-pic-base -mpic-register=r10
+ARCHCFLAGS = -fno-builtin
+ARCHCXXFLAGS = -fno-builtin -fno-exceptions
+ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow
+ARCHWARNINGSXX = -Wall -Wshadow
+ARCHDEFINES =
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
 
-CFLAGS			= $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) \
-			  $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) -pipe
-CPICFLAGS		= $(ARCHPICFLAGS) $(CFLAGS)
-CXXFLAGS		= $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) \
-			  $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) -pipe
-CXXPICFLAGS		= $(ARCHPICFLAGS) $(CXXFLAGS)
-CPPFLAGS		= $(ARCHINCLUDES) $(ARCHDEFINES)
-AFLAGS			= $(CFLAGS) -D__ASSEMBLY__
+CFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES)
+AFLAGS = $(CFLAGS) -D__ASSEMBLY__
 
-NXFLATLDFLAGS1		= -r -d -warn-common
-NXFLATLDFLAGS2		= $(NXFLATLDFLAGS1) \
-			  -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat.ld \
-			  -no-check-sections
-LDNXFLATFLAGS		= -e main -s 2048
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
 
-OBJEXT			= .o
-LIBEXT			= .a
-EXEEXT			=
+OBJEXT = .o
+LIBEXT = .a
+EXEEXT =
 
 ifneq ($(CROSSDEV),arm-elf-)
-  LDFLAGS		+= -nostartfiles -nodefaultlibs
+  LDFLAGS += -nostartfiles -nodefaultlibs
 endif
 ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  LDFLAGS		+= -g
+  LDFLAGS += -g
 endif
 
 define PREPROCESS
@@ -151,8 +166,8 @@ define CLEAN
 	@rm -f *.o *.a
 endef
 
-HOSTCC			= gcc
-HOSTINCLUDES		= -I.
-HOSTCFLAGS		= -Wall -Wstrict-prototypes -Wshadow -g -pipe
-HOSTLDFLAGS		=
+HOSTCC = gcc
+HOSTINCLUDES = -I.
+HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
+HOSTLDFLAGS =
 
diff --git a/configs/stm3210e-eval/ostest/defconfig b/configs/stm3210e-eval/ostest/defconfig
index f7d8820ca0..6e875e3a51 100755
--- a/configs/stm3210e-eval/ostest/defconfig
+++ b/configs/stm3210e-eval/ostest/defconfig
@@ -88,7 +88,8 @@ CONFIG_ARCH_CALIBRATION=n
 
 #
 # Identify toolchain and liner options
-CONFIG_STM32_CODESOURCERY=n
+CONFIG_STM32_CODESOURCERYW=n
+CONFIG_STM32_CODESOURCERYL=n
 CONFIG_STM32_DEVKITARM=n
 CONFIG_STM32_RAISONANCE=n
 CONFIG_STM32_BUILDROOT=y