Create an STM32F4Discovery configuration for testing uClibc++

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5300 42af7a65-404d-4744-a932-0658087f49c3

12 files changed, 972 insertions, 99 deletions

diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog
index 6fa9ffbfe..b357a629d 100644
--- a/nuttx/ChangeLog
+++ b/nuttx/ChangeLog
@@ -3554,3 +3554,11 @@
 	  expects.  That is usually the case if parameters are passed in
 	  registers.
 	* libxx/libxx_cxa_atexit():  Implements __cxa_atexit()
+	* configs/stm32f4discovery/cxxtest:  New test that will be used to
+	  verify the uClibc++ port (eventually).  The sim platform turned not
+	  to be a good platform for testing uClibc++.  The sim example will not
+	  run because the simulator will attempt to execute the static
+	  constructors before main() starts. BUT... NuttX is not initialized
+	  and this results in a crash.  On the STM324Discovery, I will have
+	  better control over when the static constructors run.
+
diff --git a/nuttx/arch/arm/src/Makefile b/nuttx/arch/arm/src/Makefile
index 49a651c4e..7bba7315f 100644
--- a/nuttx/arch/arm/src/Makefile
+++ b/nuttx/arch/arm/src/Makefile
@@ -36,58 +36,61 @@
 -include $(TOPDIR)/Make.defs
 -include chip/Make.defs
 
-ARCH_SRCDIR	= $(TOPDIR)/arch/$(CONFIG_ARCH)/src
+ARCH_SRCDIR = $(TOPDIR)/arch/$(CONFIG_ARCH)/src
 ifeq ($(CONFIG_ARCH_CORTEXM3),y)   # Cortex-M3 is ARMv7-M
-ARCH_SUBDIR	= armv7-m
+ARCH_SUBDIR = armv7-m
 else
 ifeq ($(CONFIG_ARCH_CORTEXM4),y)   # Cortex-M4 is ARMv7E-M
-ARCH_SUBDIR	= armv7-m
+ARCH_SUBDIR = armv7-m
 else
-ARCH_SUBDIR	= arm
+ARCH_SUBDIR = arm
 endif
 endif
 
 ifeq ($(WINTOOL),y)
-  NUTTX		= "${shell cygpath -w $(TOPDIR)/nuttx}"
-  CFLAGS	+= -I "${shell cygpath -w $(ARCH_SRCDIR)/chip}" \
-  		   -I "${shell cygpath -w $(ARCH_SRCDIR)/common}" \
-		   -I "${shell cygpath -w $(ARCH_SRCDIR)/$(ARCH_SUBDIR)}" \
-		   -I "${shell cygpath -w $(TOPDIR)/sched}"
+  NUTTX = "${shell cygpath -w $(TOPDIR)/nuttx}"
+  CFLAGS += -I "${shell cygpath -w $(ARCH_SRCDIR)/chip}" \
+            -I "${shell cygpath -w $(ARCH_SRCDIR)/common}" \
+            -I "${shell cygpath -w $(ARCH_SRCDIR)/$(ARCH_SUBDIR)}" \
+            -I "${shell cygpath -w $(TOPDIR)/sched}"
 else
-  NUTTX		= $(TOPDIR)/nuttx
-  CFLAGS	+= -I$(ARCH_SRCDIR)/chip -I$(ARCH_SRCDIR)/common \
-		   -I$(ARCH_SRCDIR)/$(ARCH_SUBDIR) -I$(TOPDIR)/sched
+  NUTTX = $(TOPDIR)/nuttx
+  CFLAGS += -I$(ARCH_SRCDIR)/chip -I$(ARCH_SRCDIR)/common \
+            -I$(ARCH_SRCDIR)/$(ARCH_SUBDIR) -I$(TOPDIR)/sched
 endif
 
-HEAD_OBJ	= $(HEAD_ASRC:.S=$(OBJEXT))
+HEAD_OBJ = $(HEAD_ASRC:.S=$(OBJEXT))
 
-ASRCS		= $(CHIP_ASRCS) $(CMN_ASRCS)
-AOBJS		= $(ASRCS:.S=$(OBJEXT))
+ASRCS = $(CHIP_ASRCS) $(CMN_ASRCS)
+AOBJS = $(ASRCS:.S=$(OBJEXT))
 
-CSRCS		= $(CHIP_CSRCS) $(CMN_CSRCS)
-COBJS		= $(CSRCS:.c=$(OBJEXT))
+CSRCS = $(CHIP_CSRCS) $(CMN_CSRCS)
+COBJS = $(CSRCS:.c=$(OBJEXT))
 
-SRCS		= $(ASRCS) $(CSRCS)
-OBJS		= $(AOBJS) $(COBJS)
+SRCS = $(ASRCS) $(CSRCS)
+OBJS = $(AOBJS) $(COBJS)
 
-LDFLAGS		= $(ARCHSCRIPT)
-EXTRA_LIBS	?=
+LDFLAGS = $(ARCHSCRIPT)
 
-LINKLIBS	=
+EXTRA_LIBS ?=
+EXTRA_LIBPATHS ?=
+
+LINKLIBS =
 ifeq ($(WINTOOL),y)
-  LIBPATHS	= ${shell for path in $(LINKLIBS); do dir=`dirname $(TOPDIR)/$$path`;echo "-L\"`cygpath -w $$dir`\"";done}
-  LIBPATHS	+= -L"${shell cygpath -w $(BOARDDIR)}"
+  LIBPATHS = ${shell for path in $(LINKLIBS); do dir=`dirname $(TOPDIR)/$$path`;echo "-L\"`cygpath -w $$dir`\"";done}
+  LIBPATHS += -L"${shell cygpath -w $(BOARDDIR)}"
 else
-  LIBPATHS	= $(addprefix -L$(TOPDIR)/,$(dir $(LINKLIBS)))
-  LIBPATHS	+= -L"$(BOARDDIR)"
+  LIBPATHS = $(addprefix -L$(TOPDIR)/,$(dir $(LINKLIBS)))
+  LIBPATHS += -L"$(BOARDDIR)"
 endif
-LDLIBS		= $(patsubst lib%,-l%,$(basename $(notdir $(LINKLIBS))))
+LDLIBS = $(patsubst lib%,-l%,$(basename $(notdir $(LINKLIBS))))
 
-BOARDDIR	= $(TOPDIR)/arch/$(CONFIG_ARCH)/src/board
+BOARDDIR = $(TOPDIR)/arch/$(CONFIG_ARCH)/src/board
 
-LIBGCC		= "${shell $(CC) $(ARCHCPUFLAGS) -print-libgcc-file-name}"
+LIBGCC = "${shell $(CC) $(ARCHCPUFLAGS) -print-libgcc-file-name}"
+GCC_LIBDIR := ${shell dirname $(LIBGCC)}
 
-VPATH		= chip:common:$(ARCH_SUBDIR)
+VPATH = chip:common:$(ARCH_SUBDIR)
 
 all: $(HEAD_OBJ) libarch$(LIBEXT)
 
@@ -101,7 +104,7 @@ $(COBJS): %$(OBJEXT): %.c
 
 libarch$(LIBEXT): $(OBJS)
 	$(Q) ( for obj in $(OBJS) ; do \
-		$(call ARCHIVE, $@, $${obj}); \
+	$(call ARCHIVE, $@, $${obj}); \
 	done ; )
 
 board/libboard$(LIBEXT):
@@ -109,7 +112,8 @@ board/libboard$(LIBEXT):
 
 nuttx: $(HEAD_OBJ) board/libboard$(LIBEXT)
 	$(Q) echo "LD: nuttx"
-	$(Q) $(LD) --entry=__start $(LDFLAGS) $(LIBPATHS) -o $(NUTTX)$(EXEEXT) $(HEAD_OBJ) $(EXTRA_OBJS) \
+	$(Q) $(LD) --entry=__start $(LDFLAGS) $(LIBPATHS) $(EXTRA_LIBPATHS) \
+		-o $(NUTTX)$(EXEEXT) $(HEAD_OBJ) $(EXTRA_OBJS) \
 		--start-group $(LDLIBS) -lboard $(EXTRA_LIBS) $(LIBGCC) --end-group
 	$(Q) $(NM) $(NUTTX)$(EXEEXT) | \
 	grep -v '\(compiled\)\|\(\$(OBJEXT)$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
@@ -122,10 +126,10 @@ nuttx: $(HEAD_OBJ) board/libboard$(LIBEXT)
 export_head: board/libboard$(LIBEXT) $(HEAD_OBJ)
 ifneq ($(HEAD_OBJ),)
 	$(Q) if [ -d "$(EXPORT_DIR)/startup" ]; then \
-		cp -f $(HEAD_OBJ) "$(EXPORT_DIR)/startup"; \
+	cp -f $(HEAD_OBJ) "$(EXPORT_DIR)/startup"; \
 	 else \
-		echo "$(EXPORT_DIR)/startup does not exist"; \
-		exit 1; \
+	echo "$(EXPORT_DIR)/startup does not exist"; \
+	exit 1; \
 	 fi
 endif
 
@@ -133,7 +137,7 @@ endif
 
 .depend: Makefile chip/Make.defs $(SRCS)
 	$(Q) if [ -e board/Makefile ]; then \
-		$(MAKE) -C board TOPDIR="$(TOPDIR)" depend ; \
+	$(MAKE) -C board TOPDIR="$(TOPDIR)" depend ; \
 	fi
 	$(Q) $(MKDEP) --dep-path chip --dep-path common --dep-path $(ARCH_SUBDIR) \
 	 $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
@@ -143,14 +147,14 @@ depend: .depend
 
 clean:
 	$(Q) if [ -e board/Makefile ]; then \
-		$(MAKE) -C board TOPDIR="$(TOPDIR)" clean ; \
+	$(MAKE) -C board TOPDIR="$(TOPDIR)" clean ; \
 	fi
 	$(Q) rm -f libarch$(LIBEXT) *~ .*.swp
 	$(call CLEAN)
 
 distclean: clean
 	$(Q) if [ -e board/Makefile ]; then \
-		$(MAKE) -C board TOPDIR="$(TOPDIR)" distclean ; \
+	$(MAKE) -C board TOPDIR="$(TOPDIR)" distclean ; \
 	fi
 	$(Q) rm -f Make.dep .depend
 
diff --git a/nuttx/arch/sim/src/Makefile b/nuttx/arch/sim/src/Makefile
index cf8008b16..1e4d08736 100644
--- a/nuttx/arch/sim/src/Makefile
+++ b/nuttx/arch/sim/src/Makefile
@@ -101,6 +101,7 @@ endif
 endif
 
 EXTRA_LIBS ?=
+EXTRA_LIBPATHS ?=
 
 ifeq ($(CONFIG_FS_FAT),y)
 STDLIBS += -lz
@@ -108,9 +109,6 @@ endif
 
 STDLIBS += -lc
 
-LIBGCC := "${shell $(CC) $(ARCHCPUFLAGS) -print-libgcc-file-name}"
-GCC_LIBDIR := ${shell dirname $(LIBGCC)}
-
 # Determine which objects are required in the link.  The
 # up_head object normally draws in all that is needed, but
 # there are a fews that must be included because they 
@@ -134,7 +132,7 @@ LDLIBS = $(patsubst lib%,-l%,$(basename $(notdir $(LINKLIBS))))
 
 # Add the board-specific library and directory
 
-LDPATHS += -L board -L $(GCC_LIBDIR)
+LDPATHS += -L board 
 LDLIBS += -lboard
 
 # Make targets begin here
@@ -181,7 +179,7 @@ Cygwin-names.dat: nuttx-names.dat
 
 nuttx.rel : libarch$(LIBEXT) board/libboard$(LIBEXT) $(HOSTOS)-names.dat $(LINKOBJS)
 	$(Q) echo "LD:  nuttx.rel"
-	$(Q) $(LD) -r $(LDLINKFLAGS) $(LDPATHS) -o $@ $(REQUIREDOBJS) --start-group $(LDLIBS) $(EXTRA_LIBS) --end-group
+	$(Q) $(LD) -r $(LDLINKFLAGS) $(LDPATHS) $(EXTRA_LIBPATHS) -o $@ $(REQUIREDOBJS) --start-group $(LDLIBS) $(EXTRA_LIBS) --end-group
 	$(Q) $(OBJCOPY) --redefine-syms=$(HOSTOS)-names.dat $@
 
 # Generate the final NuttX binary by linking the host-specific objects with the NuttX
diff --git a/nuttx/configs/sim/README.txt b/nuttx/configs/sim/README.txt
index 654ce9314..39ace5495 100644
--- a/nuttx/configs/sim/README.txt
+++ b/nuttx/configs/sim/README.txt
@@ -215,18 +215,18 @@ cxxtest
      b. Execute 'make menuconfig' in nuttx/ in order to start the
         reconfiguration process.
 
-  3. At presenet (2012/11/02), this example builds only with exceptions
+  3. At present (2012/11/02), this example builds only with exceptions
      disabled (CONFIG_UCLIBCXX_EXCEPTIONS=n).  And even then, it will
      not run.
 
-     The reason that the example will will not run on the simulator has
+     The reason that the example will not run on the simulator has
      to do with when static constructors are enabled:  In the simulator
-     it will attempt to execute the static constructros before main()
+     it will attempt to execute the static constructors before main()
      starts. BUT... NuttX is not initialized and this results in a crash.
 
      To really use this example, I will have to think of some way to
      postpone running C++ static initializers until NuttX has been
-     initialied.
+     initialized.
 
 mount
 
diff --git a/nuttx/configs/sim/cxxtest/Make.defs b/nuttx/configs/sim/cxxtest/Make.defs
index 7b0c524b4..6f945cc51 100644
--- a/nuttx/configs/sim/cxxtest/Make.defs
+++ b/nuttx/configs/sim/cxxtest/Make.defs
@@ -93,6 +93,10 @@ LDLINKFLAGS = $(ARCHSCRIPT) # Link flags used with $(LD)
 CCLINKFLAGS = $(ARCHSCRIPT) # Link flags used with $(CC)
 LDFLAGS = $(ARCHSCRIPT) # For backward compatibility, same as CCLINKFLAGS
 
+LIBSUPXX = ${shell $(CC) --print-file-name=libsupc++.a}
+EXTRA_LIBPATHS = -L "${shell dirname "$(LIBSUPXX)"}"
+EXTRA_LIBS = -lsupc++
+
 ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   LDLINKFLAGS += -g
   CCLINKFLAGS += -g
@@ -105,8 +109,6 @@ ifeq ($(CONFIG_SIM_M32),y)
   LDFLAGS += -m32
 endif
 
-EXTRA_LIBS = -lsupc++
-
 MKDEP = $(TOPDIR)/tools/mkdeps.sh
 
 HOSTCC = gcc
diff --git a/nuttx/configs/sim/cxxtest/defconfig b/nuttx/configs/sim/cxxtest/defconfig
index d2fef0a55..1f99a6333 100644
--- a/nuttx/configs/sim/cxxtest/defconfig
+++ b/nuttx/configs/sim/cxxtest/defconfig
@@ -288,7 +288,7 @@ CONFIG_HAVE_CXX=y
 # uClibc++ Standard C++ Library
 #
 CONFIG_UCLIBCXX=y
-CONFIG_UCLIBCXX_EXCEPTION=y
+# CONFIG_UCLIBCXX_EXCEPTION is not set
 CONFIG_UCLIBCXX_IOSTREAM_BUFSIZE=32
 CONFIG_UCLIBCXX_HAVE_LIBSUPCXX=y
 
diff --git a/nuttx/configs/sim/ostest/Make.defs b/nuttx/configs/sim/ostest/Make.defs
index 201ff7a94..975d59338 100644
--- a/nuttx/configs/sim/ostest/Make.defs
+++ b/nuttx/configs/sim/ostest/Make.defs
@@ -36,76 +36,76 @@
 include ${TOPDIR}/.config
 include ${TOPDIR}/tools/Config.mk
 
-HOSTOS			= ${shell uname -o 2>/dev/null || echo "Other"}
+HOSTOS = ${shell uname -o 2>/dev/null || echo "Other"}
 
 ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  ARCHOPTIMIZATION	= -g
+  ARCHOPTIMIZATION = -g
 else
-  ARCHOPTIMIZATION	= -O2
+  ARCHOPTIMIZATION = -O2
 endif
 
-ARCHCPUFLAGS		= -fno-builtin
-ARCHCPUFLAGSXX		= -fno-builtin -fno-exceptions -fno-rtti
-ARCHPICFLAGS		= -fpic
-ARCHWARNINGS		= -Wall -Wstrict-prototypes -Wshadow
-ARCHWARNINGSXX		= -Wall -Wshadow
-ARCHDEFINES		=
-ARCHINCLUDES		= -I. -isystem $(TOPDIR)/include
-ARCHINCLUDESXX		= -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
-ARCHSCRIPT		=
+ARCHCPUFLAGS = -fno-builtin
+ARCHCPUFLAGSXX = -fno-builtin -fno-exceptions -fno-rtti
+ARCHPICFLAGS = -fpic
+ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow
+ARCHWARNINGSXX = -Wall -Wshadow
+ARCHDEFINES =
+ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
+ARCHINCLUDESXX = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
+ARCHSCRIPT =
 
 ifeq ($(CONFIG_SIM_M32),y)
-  ARCHCPUFLAGS		+= -m32
-  ARCHCPUFLAGSXX	+= -m32
+  ARCHCPUFLAGS += -m32
+  ARCHCPUFLAGSXX += -m32
 endif
 
-CROSSDEV		=
-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
+CROSSDEV =
+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
 
-CFLAGS			= $(ARCHWARNINGS) $(ARCHOPTIMIZATION) \
-			  $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
-CXXFLAGS		= $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) \
-			  $(ARCHCPUFLAGSXX) $(ARCHINCLUDESXX) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
-CPPFLAGS		= $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES)
-AFLAGS			= $(CFLAGS) -D__ASSEMBLY__
+CFLAGS = $(ARCHWARNINGS) $(ARCHOPTIMIZATION) \
+   $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CXXFLAGS = $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) \
+   $(ARCHCPUFLAGSXX) $(ARCHINCLUDESXX) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES)
+AFLAGS = $(CFLAGS) -D__ASSEMBLY__
 
-OBJEXT			= .o
-LIBEXT			= .a
+OBJEXT = .o
+LIBEXT = .a
 
 ifeq ($(HOSTOS),Cygwin)
-  EXEEXT		= .exe
+  EXEEXT = .exe
 else
-  EXEEXT		=
+  EXEEXT =
 endif
 
-LDLINKFLAGS		= $(ARCHSCRIPT)	# Link flags used with $(LD)
-CCLINKFLAGS		= $(ARCHSCRIPT)	# Link flags used with $(CC)
-LDFLAGS			= $(ARCHSCRIPT)	# For backward compatibility, same as CCLINKFLAGS
+LDLINKFLAGS = $(ARCHSCRIPT) # Link flags used with $(LD)
+CCLINKFLAGS = $(ARCHSCRIPT) # Link flags used with $(CC)
+LDFLAGS = $(ARCHSCRIPT) # For backward compatibility, same as CCLINKFLAGS
 
 ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  LDLINKFLAGS		+= -g
-  CCLINKFLAGS		+= -g
-  LDFLAGS			+= -g
+  LDLINKFLAGS += -g
+  CCLINKFLAGS += -g
+  LDFLAGS += -g
 endif
 
 ifeq ($(CONFIG_SIM_M32),y)
-  LDLINKFLAGS		+= -melf_i386
-  CCLINKFLAGS		+= -m32
-  LDFLAGS			+= -m32
+  LDLINKFLAGS += -melf_i386
+  CCLINKFLAGS += -m32
+  LDFLAGS += -m32
 endif
 
 
-MKDEP			= $(TOPDIR)/tools/mkdeps.sh
+MKDEP = $(TOPDIR)/tools/mkdeps.sh
 
-HOSTCC			= gcc
-HOSTINCLUDES		= -I.
-HOSTCFLAGS		= $(ARCHWARNINGS) $(ARCHOPTIMIZATION) \
-			  $(ARCHCPUFLAGS) $(HOSTINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
-HOSTLDFLAGS		=
+HOSTCC = gcc
+HOSTINCLUDES = -I.
+HOSTCFLAGS = $(ARCHWARNINGS) $(ARCHOPTIMIZATION) \
+   $(ARCHCPUFLAGS) $(HOSTINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+HOSTLDFLAGS =
diff --git a/nuttx/configs/stm32f4discovery/README.txt b/nuttx/configs/stm32f4discovery/README.txt
index 57db94e1e..730bf66ef 100644
--- a/nuttx/configs/stm32f4discovery/README.txt
+++ b/nuttx/configs/stm32f4discovery/README.txt
@@ -982,6 +982,35 @@ can be selected as follow:
 
 Where <subdir> is one of the following:
 
+  cxxtest:
+  -------
+
+  The C++ standard libary test at apps/examples/cxxtest configuration.  This
+  test is used to verify the uClibc++ port to NuttX.  This configuration may
+  be selected as follows:
+
+    cd <nuttx-directory>/tools
+    ./configure.sh sim/cxxtest
+
+  NOTES:
+
+  1. Before you can use this example, you must first install the uClibc++
+     C++ library.  This is located outside of the NuttX source tree at
+     misc/uClibc++ in SVN.  See the README.txt file for instructions on
+     how to install uClibc++
+
+  2. This configuration uses the mconf-based configuration tool.  To
+     change this configuration using that tool, you should:
+
+     a. Build and install the mconf tool.  See nuttx/README.txt and
+        misc/tools/
+
+     b. Execute 'make menuconfig' in nuttx/ in order to start the
+        reconfiguration process.
+
+  3. At present (2012/11/02), this example builds only with exceptions
+     disabled (CONFIG_UCLIBCXX_EXCEPTIONS=n).
+
   elf:
   ---
 
diff --git a/nuttx/configs/stm32f4discovery/cxxtest/Make.defs b/nuttx/configs/stm32f4discovery/cxxtest/Make.defs
new file mode 100644
index 000000000..f81d6ec2c
--- /dev/null
+++ b/nuttx/configs/stm32f4discovery/cxxtest/Make.defs
@@ -0,0 +1,184 @@
+############################################################################
+# configs/stm32f4discovery/cxxtest/Make.defs
+#
+#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+include ${TOPDIR}/.config
+include ${TOPDIR}/tools/Config.mk
+
+# Setup for the selected toolchain
+
+ifeq ($(CONFIG_STM32_CODESOURCERYW),y)
+  # CodeSourcery under Windows
+  CROSSDEV = arm-none-eabi-
+  ARCROSSDEV = arm-none-eabi-
+  WINTOOL = y
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+ifeq ($(CONFIG_STM32_CODESOURCERYL),y)
+  # CodeSourcery under Linux
+  CROSSDEV = arm-none-eabi-
+  ARCROSSDEV = arm-none-eabi-
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+  MAXOPTIMIZATION = -O2
+endif
+ifeq ($(CONFIG_STM32_ATOLLIC_LITE),y)
+  # Atollic toolchain under Windows
+  CROSSDEV = arm-atollic-eabi-
+  ARCROSSDEV =
+  WINTOOL = y
+ifeq ($(CONFIG_ARCH_FPU),y)
+  ARCHCPUFLAGS = -mcpu=cortex-m4 -mthumb -march=armv7e-m -mfpu=fpv4-sp-d16 -mfloat-abi=hard
+else
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+endif
+ifeq ($(CONFIG_STM32_ATOLLIC_PRO),y)
+  # Atollic toolchain under Windows
+  CROSSDEV = arm-atollic-eabi-
+  ARCROSSDEV = arm-atollic-eabi-
+  WINTOOL = y
+ifeq ($(CONFIG_ARCH_FPU),y)
+  ARCHCPUFLAGS = -mcpu=cortex-m4 -mthumb -march=armv7e-m -mfpu=fpv4-sp-d16 -mfloat-abi=hard
+else
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+endif
+ifeq ($(CONFIG_STM32_DEVKITARM),y)
+  # devkitARM under Windows
+  CROSSDEV = arm-eabi-
+  ARCROSSDEV = arm-eabi-
+  WINTOOL = y
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+ifeq ($(CONFIG_STM32_RAISONANCE),y)
+  # Raisonance RIDE7 under Windows
+  CROSSDEV = arm-none-eabi-
+  ARCROSSDEV = arm-none-eabi-
+  WINTOOL = y
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+ifeq ($(CONFIG_STM32_BUILDROOT),y)
+  # NuttX buildroot under Linux or Cygwin
+  # OABI
+  # CROSSDEV = arm-nuttx-elf-
+  # ARCROSSDEV = arm-nuttx-elf-
+  # ARCHCPUFLAGS = -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft
+  # EABI
+  CROSSDEV = arm-nuttx-eabi-
+  ARCROSSDEV = arm-nuttx-eabi-
+  ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+  MAXOPTIMIZATION = -Os
+endif
+
+CC = $(CROSSDEV)gcc
+CXX = $(CROSSDEV)g++
+CPP = $(CROSSDEV)gcc -E
+LD = $(CROSSDEV)ld
+AR = $(ARCROSSDEV)ar rcs
+NM = $(ARCROSSDEV)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}
+
+LDSCRIPT = ld.script
+LIBSUPXX = ${shell $(CC) --print-file-name=libsupc++.a}
+EXTRA_LIBPATHS = -L "${shell dirname "$(LIBSUPXX)"}"
+EXTRA_LIBS = -lsupc++
+
+ifeq ($(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 $(TOPDIR)/include/cxx}" \
+    -isystem "${shell cygpath -w $(TOPDIR)/include/uClibc++}"
+  ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(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 -isystem $(TOPDIR)/include/uClibc++
+  ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
+endif
+
+ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
+  ARCHOPTIMIZATION = -g
+else
+  ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
+endif
+
+ARCHCFLAGS = -fno-builtin
+ifeq ($(CONFIG_UCLIBCXX_EXCEPTION),y)
+  ARCHCPUFLAGSXX = -fno-builtin
+else
+  ARCHCPUFLAGSXX = -fno-builtin -fno-exceptions
+endif
+ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow
+ARCHWARNINGSXX = -Wall -Wshadow
+ARCHDEFINES =
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
+
+CFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES)
+AFLAGS = $(CFLAGS) -D__ASSEMBLY__
+
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-pcrel.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
+
+OBJEXT = .o
+LIBEXT = .a
+EXEEXT =
+
+ifneq ($(CROSSDEV),arm-nuttx-elf-)
+  LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  LDFLAGS += -g
+endif
+
+HOSTCC = gcc
+HOSTINCLUDES = -I.
+HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
+HOSTLDFLAGS =
+
diff --git a/nuttx/configs/stm32f4discovery/cxxtest/defconfig b/nuttx/configs/stm32f4discovery/cxxtest/defconfig
new file mode 100644
index 000000000..85b04c0ff
--- /dev/null
+++ b/nuttx/configs/stm32f4discovery/cxxtest/defconfig
@@ -0,0 +1,573 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# Nuttx/ Configuration
+#
+CONFIG_NUTTX_NEWCONFIG=y
+
+#
+# Build Setup
+#
+# CONFIG_EXPERIMENTAL is not set
+
+#
+# Build Configuration
+#
+# CONFIG_APPS_DIR="../apps"
+# CONFIG_BUILD_2PASS is not set
+
+#
+# Binary Output Formats
+#
+# CONFIG_RRLOAD_BINARY is not set
+CONFIG_INTELHEX_BINARY=y
+# CONFIG_MOTOROLA_SREC is not set
+CONFIG_RAW_BINARY=y
+
+#
+# Customize Header Files
+#
+# CONFIG_ARCH_STDBOOL_H is not set
+# CONFIG_ARCH_MATH_H is not set
+CONFIG_ARCH_FLOAT_H=y
+# CONFIG_ARCH_STDARG_H is not set
+
+#
+# Debug Options
+#
+# CONFIG_DEBUG is not set
+# CONFIG_DEBUG_SYMBOLS is not set
+
+#
+# System Type
+#
+# CONFIG_ARCH_8051 is not set
+CONFIG_ARCH_ARM=y
+# CONFIG_ARCH_AVR is not set
+# CONFIG_ARCH_HC is not set
+# CONFIG_ARCH_MIPS is not set
+# CONFIG_ARCH_RGMP is not set
+# CONFIG_ARCH_SH is not set
+# CONFIG_ARCH_SIM is not set
+# CONFIG_ARCH_X86 is not set
+# CONFIG_ARCH_Z16 is not set
+# CONFIG_ARCH_Z80 is not set
+CONFIG_ARCH="arm"
+
+#
+# ARM Options
+#
+# CONFIG_ARCH_CHIP_C5471 is not set
+# CONFIG_ARCH_CHIP_CALYPSO is not set
+# CONFIG_ARCH_CHIP_DM320 is not set
+# CONFIG_ARCH_CHIP_IMX is not set
+# CONFIG_ARCH_CHIP_KINETIS is not set
+# CONFIG_ARCH_CHIP_LM3S is not set
+# CONFIG_ARCH_CHIP_LPC17XX is not set
+# CONFIG_ARCH_CHIP_LPC214X is not set
+# CONFIG_ARCH_CHIP_LPC2378 is not set
+# CONFIG_ARCH_CHIP_LPC31XX is not set
+# CONFIG_ARCH_CHIP_LPC43XX is not set
+# CONFIG_ARCH_CHIP_SAM3U is not set
+CONFIG_ARCH_CHIP_STM32=y
+# CONFIG_ARCH_CHIP_STR71X is not set
+CONFIG_ARCH_CORTEXM4=y
+CONFIG_ARCH_FAMILY="armv7-m"
+CONFIG_ARCH_CHIP="stm32"
+# CONFIG_ARCH_FPU is not set
+CONFIG_ARCH_HAVE_MPU=y
+# CONFIG_ARMV7M_MPU is not set
+CONFIG_ARCH_IRQPRIO=y
+CONFIG_BOARD_LOOPSPERMSEC=16717
+# CONFIG_ARCH_CALIBRATION is not set
+# CONFIG_SERIAL_TERMIOS is not set
+
+#
+# STM32 Configuration Options
+#
+# CONFIG_ARCH_CHIP_STM32F100C8 is not set
+# CONFIG_ARCH_CHIP_STM32F100CB is not set
+# CONFIG_ARCH_CHIP_STM32F100R8 is not set
+# CONFIG_ARCH_CHIP_STM32F100RB is not set
+# CONFIG_ARCH_CHIP_STM32F100V8 is not set
+# CONFIG_ARCH_CHIP_STM32F100VB is not set
+# CONFIG_ARCH_CHIP_STM32F103RET6 is not set
+# CONFIG_ARCH_CHIP_STM32F103VCT6 is not set
+# CONFIG_ARCH_CHIP_STM32F103VET6 is not set
+# CONFIG_ARCH_CHIP_STM32F103ZET6 is not set
+# CONFIG_ARCH_CHIP_STM32F105VBT7 is not set
+# CONFIG_ARCH_CHIP_STM32F107VC is not set
+# CONFIG_ARCH_CHIP_STM32F207IG is not set
+# CONFIG_ARCH_CHIP_STM32F405RG is not set
+# CONFIG_ARCH_CHIP_STM32F405VG is not set
+# CONFIG_ARCH_CHIP_STM32F405ZG is not set
+# CONFIG_ARCH_CHIP_STM32F407VE is not set
+CONFIG_ARCH_CHIP_STM32F407VG=y
+# CONFIG_ARCH_CHIP_STM32F407ZE is not set
+# CONFIG_ARCH_CHIP_STM32F407ZG is not set
+# CONFIG_ARCH_CHIP_STM32F407IE is not set
+# CONFIG_ARCH_CHIP_STM32F407IG is not set
+CONFIG_STM32_STM32F40XX=y
+CONFIG_STM32_CODESOURCERYW=y
+# CONFIG_STM32_CODESOURCERYL is not set
+# CONFIG_STM32_ATOLLIC_LITE is not set
+# CONFIG_STM32_ATOLLIC_PRO is not set
+# CONFIG_STM32_DEVKITARM is not set
+# CONFIG_STM32_RAISONANCE is not set
+# CONFIG_STM32_BUILDROOT is not set
+# CONFIG_STM32_DFU is not set
+
+#
+# STM32 Peripheral Support
+#
+# CONFIG_STM32_ADC1 is not set
+# CONFIG_STM32_ADC2 is not set
+# CONFIG_STM32_ADC3 is not set
+# CONFIG_STM32_CRC is not set
+# CONFIG_STM32_DMA1 is not set
+# CONFIG_STM32_DMA2 is not set
+# CONFIG_STM32_BKPSRAM is not set
+# CONFIG_STM32_CAN1 is not set
+# CONFIG_STM32_CAN2 is not set
+# CONFIG_STM32_CCMDATARAM is not set
+# CONFIG_STM32_CRYP is not set
+# CONFIG_STM32_DAC1 is not set
+# CONFIG_STM32_DAC2 is not set
+# CONFIG_STM32_DCMI is not set
+# CONFIG_STM32_ETHMAC is not set
+# CONFIG_STM32_FSMC is not set
+# CONFIG_STM32_HASH is not set
+# CONFIG_STM32_I2C1 is not set
+# CONFIG_STM32_I2C2 is not set
+# CONFIG_STM32_I2C3 is not set
+# CONFIG_STM32_IWDG is not set
+# CONFIG_STM32_OTGFS is not set
+# CONFIG_STM32_OTGHS is not set
+# CONFIG_STM32_PWR is not set
+# CONFIG_STM32_RNG is not set
+# CONFIG_STM32_SDIO is not set
+# CONFIG_STM32_SPI1 is not set
+# CONFIG_STM32_SPI2 is not set
+# CONFIG_STM32_SPI3 is not set
+CONFIG_STM32_SYSCFG=y
+# CONFIG_STM32_TIM1 is not set
+# CONFIG_STM32_TIM2 is not set
+# CONFIG_STM32_TIM3 is not set
+# CONFIG_STM32_TIM4 is not set
+# CONFIG_STM32_TIM5 is not set
+# CONFIG_STM32_TIM6 is not set
+# CONFIG_STM32_TIM7 is not set
+# CONFIG_STM32_TIM8 is not set
+# CONFIG_STM32_TIM9 is not set
+# CONFIG_STM32_TIM10 is not set
+# CONFIG_STM32_TIM11 is not set
+# CONFIG_STM32_TIM12 is not set
+# CONFIG_STM32_TIM13 is not set
+# CONFIG_STM32_TIM14 is not set
+# CONFIG_STM32_USART1 is not set
+CONFIG_STM32_USART2=y
+# CONFIG_STM32_USART3 is not set
+# CONFIG_STM32_UART4 is not set
+# CONFIG_STM32_UART5 is not set
+# CONFIG_STM32_USART6 is not set
+# CONFIG_STM32_WWDG is not set
+
+#
+# Alternate Pin Mapping
+#
+# CONFIG_STM32_JTAG_DISABLE is not set
+# CONFIG_STM32_JTAG_FULL_ENABLE is not set
+# CONFIG_STM32_JTAG_NOJNTRST_ENABLE is not set
+CONFIG_STM32_JTAG_SW_ENABLE=y
+# CONFIG_STM32_FORCEPOWER is not set
+# CONFIG_ARCH_BOARD_STM32_CUSTOM_CLOCKCONFIG is not set
+# CONFIG_STM32_CCMEXCLUDE is not set
+
+#
+# USB Host Configuration
+#
+
+#
+# Architecture Options
+#
+# CONFIG_ARCH_NOINTC is not set
+# CONFIG_ARCH_DMA is not set
+CONFIG_ARCH_STACKDUMP=y
+
+#
+# Board Settings
+#
+CONFIG_DRAM_START=0x20000000
+CONFIG_DRAM_SIZE=114688
+CONFIG_ARCH_HAVE_INTERRUPTSTACK=y
+CONFIG_ARCH_INTERRUPTSTACK=0
+
+#
+# Boot options
+#
+# CONFIG_BOOT_RUNFROMEXTSRAM is not set
+CONFIG_BOOT_RUNFROMFLASH=y
+# CONFIG_BOOT_RUNFROMISRAM is not set
+# CONFIG_BOOT_RUNFROMSDRAM is not set
+# CONFIG_BOOT_COPYTORAM is not set
+
+#
+# Board Selection
+#
+CONFIG_ARCH_BOARD_STM32F4_DISCOVERY=y
+# CONFIG_ARCH_BOARD_CUSTOM is not set
+CONFIG_ARCH_BOARD="stm32f4discovery"
+
+#
+# Common Board Options
+#
+CONFIG_ARCH_HAVE_LEDS=y
+CONFIG_ARCH_LEDS=y
+CONFIG_ARCH_HAVE_BUTTONS=y
+# CONFIG_ARCH_BUTTONS is not set
+CONFIG_ARCH_HAVE_IRQBUTTONS=y
+
+#
+# Board-Specific Options
+#
+
+#
+# RTOS Features
+#
+CONFIG_MSEC_PER_TICK=10
+CONFIG_RR_INTERVAL=200
+# CONFIG_SCHED_INSTRUMENTATION is not set
+CONFIG_TASK_NAME_SIZE=0
+# CONFIG_JULIAN_TIME is not set
+CONFIG_START_YEAR=2012
+CONFIG_START_MONTH=11
+CONFIG_START_DAY=2
+CONFIG_DEV_CONSOLE=y
+# CONFIG_DEV_LOWCONSOLE is not set
+# CONFIG_MUTEX_TYPES is not set
+# CONFIG_PRIORITY_INHERITANCE is not set
+# CONFIG_FDCLONE_DISABLE is not set
+# CONFIG_FDCLONE_STDIO is not set
+CONFIG_SDCLONE_DISABLE=y
+# CONFIG_SCHED_WORKQUEUE is not set
+# CONFIG_SCHED_WAITPID is not set
+# CONFIG_SCHED_ATEXIT is not set
+CONFIG_SCHED_ONEXIT=y
+CONFIG_SCHED_ONEXIT_MAX=4
+CONFIG_USER_ENTRYPOINT="cxxtest_main"
+CONFIG_DISABLE_OS_API=y
+# CONFIG_DISABLE_CLOCK is not set
+# CONFIG_DISABLE_POSIX_TIMERS is not set
+# CONFIG_DISABLE_PTHREAD is not set
+# CONFIG_DISABLE_SIGNALS is not set
+# CONFIG_DISABLE_MQUEUE is not set
+CONFIG_DISABLE_MOUNTPOINT=y
+CONFIG_DISABLE_ENVIRON=y
+CONFIG_DISABLE_POLL=y
+
+#
+# Sizes of configurable things (0 disables)
+#
+CONFIG_MAX_TASKS=16
+CONFIG_MAX_TASK_ARGS=4
+CONFIG_NPTHREAD_KEYS=4
+CONFIG_NFILE_DESCRIPTORS=8
+CONFIG_NFILE_STREAMS=8
+CONFIG_NAME_MAX=32
+CONFIG_PREALLOC_MQ_MSGS=4
+CONFIG_MQ_MAXMSGSIZE=32
+CONFIG_MAX_WDOGPARMS=2
+CONFIG_PREALLOC_WDOGS=4
+CONFIG_PREALLOC_TIMERS=4
+
+#
+# Stack and heap information
+#
+# CONFIG_CUSTOM_STACK is not set
+CONFIG_IDLETHREAD_STACKSIZE=1024
+CONFIG_USERMAIN_STACKSIZE=2048
+CONFIG_PTHREAD_STACK_MIN=256
+CONFIG_PTHREAD_STACK_DEFAULT=2048
+
+#
+# Device Drivers
+#
+CONFIG_DEV_NULL=y
+# CONFIG_DEV_ZERO is not set
+# CONFIG_LOOP is not set
+# CONFIG_RAMDISK is not set
+# CONFIG_CAN is not set
+# CONFIG_PWM is not set
+# CONFIG_I2C is not set
+CONFIG_ARCH_HAVE_I2CRESET=y
+# CONFIG_SPI is not set
+# CONFIG_RTC is not set
+# CONFIG_WATCHDOG is not set
+# CONFIG_ANALOG is not set
+# CONFIG_BCH is not set
+# CONFIG_INPUT is not set
+# CONFIG_LCD is not set
+# CONFIG_MMCSD is not set
+# CONFIG_MTD is not set
+# CONFIG_PIPES is not set
+# CONFIG_PM is not set
+# CONFIG_POWER is not set
+# CONFIG_SENSORS is not set
+# CONFIG_SERCOMM_CONSOLE is not set
+CONFIG_SERIAL=y
+# CONFIG_LOWLEVEL_CONSOLE is not set
+# CONFIG_16550_UART is not set
+CONFIG_ARCH_HAVE_USART2=y
+CONFIG_MCU_SERIAL=y
+CONFIG_STANDARD_SERIAL=y
+CONFIG_USART2_SERIAL_CONSOLE=y
+# CONFIG_NO_SERIAL_CONSOLE is not set
+
+#
+# USART2 Configuration
+#
+CONFIG_USART2_RXBUFSIZE=128
+CONFIG_USART2_TXBUFSIZE=128
+CONFIG_USART2_BAUD=115200
+CONFIG_USART2_BITS=8
+CONFIG_USART2_PARITY=0
+CONFIG_USART2_2STOP=0
+# CONFIG_USBDEV is not set
+# CONFIG_USBHOST is not set
+# CONFIG_WIRELESS is not set
+
+#
+# System Logging Device Options
+#
+
+#
+# System Logging
+#
+# CONFIG_RAMLOG is not set
+
+#
+# Networking Support
+#
+# CONFIG_NET is not set
+
+#
+# File Systems
+#
+
+#
+# File system configuration
+#
+# CONFIG_FS_RAMMAP is not set
+
+#
+# System Logging
+#
+# CONFIG_SYSLOG is not set
+
+#
+# Graphics Support
+#
+# CONFIG_NX is not set
+
+#
+# Memory Management
+#
+# CONFIG_MM_SMALL is not set
+CONFIG_MM_REGIONS=2
+# CONFIG_GRAN is not set
+
+#
+# Binary Formats
+#
+# CONFIG_BINFMT_DISABLE is not set
+# CONFIG_NXFLAT is not set
+# CONFIG_ELF is not set
+CONFIG_SYMTAB_ORDEREDBYNAME=y
+
+#
+# Library Routines
+#
+CONFIG_STDIO_BUFFER_SIZE=256
+CONFIG_STDIO_LINEBUFFER=y
+CONFIG_NUNGET_CHARS=2
+CONFIG_LIBM=y
+# CONFIG_NOPRINTF_FIELDWIDTH is not set
+# CONFIG_LIBC_FLOATINGPOINT is not set
+# CONFIG_EOL_IS_CR is not set
+# CONFIG_EOL_IS_LF is not set
+# CONFIG_EOL_IS_BOTH_CRLF is not set
+CONFIG_EOL_IS_EITHER_CRLF=y
+# CONFIG_LIBC_STRERROR is not set
+# CONFIG_LIBC_PERROR_STDOUT is not set
+CONFIG_ARCH_LOWPUTC=y
+CONFIG_LIB_SENDFILE_BUFSIZE=512
+# CONFIG_ARCH_ROMGETC is not set
+# CONFIG_ARCH_OPTIMIZED_FUNCTIONS is not set
+
+#
+# Basic CXX Support
+#
+CONFIG_HAVE_CXX=y
+CONFIG_HAVE_CXXINITIALIZE=y
+# CONFIG_CXX_NEWLONG is not set
+
+#
+# uClibc++ Standard C++ Library
+#
+CONFIG_UCLIBCXX=y
+# CONFIG_UCLIBCXX_EXCEPTION is not set
+CONFIG_UCLIBCXX_IOSTREAM_BUFSIZE=32
+CONFIG_UCLIBCXX_HAVE_LIBSUPCXX=y
+
+#
+# Application Configuration
+#
+
+#
+# Named Applications
+#
+# CONFIG_NAMEDAPP is not set
+
+#
+# Examples
+#
+# CONFIG_EXAMPLES_BUTTONS is not set
+# CONFIG_EXAMPLES_CAN is not set
+# CONFIG_EXAMPLES_CDCACM is not set
+# CONFIG_EXAMPLES_COMPOSITE is not set
+CONFIG_EXAMPLES_CXXTEST=y
+# CONFIG_EXAMPLES_DHCPD is not set
+# CONFIG_EXAMPLES_ELF is not set
+# CONFIG_EXAMPLES_FTPC is not set
+# CONFIG_EXAMPLES_FTPD is not set
+# CONFIG_EXAMPLES_HELLO is not set
+# CONFIG_EXAMPLES_HELLOXX is not set
+# CONFIG_EXAMPLES_JSON is not set
+# CONFIG_EXAMPLES_HIDKBD is not set
+# CONFIG_EXAMPLES_IGMP is not set
+# CONFIG_EXAMPLES_LCDRW is not set
+# CONFIG_EXAMPLES_MM is not set
+# CONFIG_EXAMPLES_MOUNT is not set
+# CONFIG_EXAMPLES_MODBUS is not set
+# CONFIG_EXAMPLES_NETTEST is not set
+# CONFIG_EXAMPLES_NSH is not set
+# CONFIG_EXAMPLES_NULL is not set
+# CONFIG_EXAMPLES_NX is not set
+# CONFIG_EXAMPLES_NXCONSOLE is not set
+# CONFIG_EXAMPLES_NXFFS is not set
+# CONFIG_EXAMPLES_NXFLAT is not set
+# CONFIG_EXAMPLES_NXHELLO is not set
+# CONFIG_EXAMPLES_NXIMAGE is not set
+# CONFIG_EXAMPLES_NXLINES is not set
+# CONFIG_EXAMPLES_NXTEXT is not set
+# CONFIG_EXAMPLES_OSTEST is not set
+# CONFIG_EXAMPLES_PASHELLO is not set
+# CONFIG_EXAMPLES_PIPE is not set
+# CONFIG_EXAMPLES_POLL is not set
+# CONFIG_EXAMPLES_QENCODER is not set
+# CONFIG_EXAMPLES_RGMP is not set
+# CONFIG_EXAMPLES_ROMFS is not set
+# CONFIG_EXAMPLES_SENDMAIL is not set
+# CONFIG_EXAMPLES_SERLOOP is not set
+# CONFIG_EXAMPLES_TELNETD is not set
+# CONFIG_EXAMPLES_THTTPD is not set
+# CONFIG_EXAMPLES_TIFF is not set
+# CONFIG_EXAMPLES_TOUCHSCREEN is not set
+# CONFIG_EXAMPLES_UDP is not set
+# CONFIG_EXAMPLES_UIP is not set
+# CONFIG_EXAMPLES_USBSERIAL is not set
+# CONFIG_EXAMPLES_USBMSC is not set
+# CONFIG_EXAMPLES_USBTERM is not set
+# CONFIG_EXAMPLES_WATCHDOG is not set
+# CONFIG_EXAMPLES_WLAN is not set
+
+#
+# Interpreters
+#
+
+#
+# Interpreters
+#
+# CONFIG_FICL is not set
+# CONFIG_PCODE is not set
+
+#
+# Network Utilities
+#
+
+#
+# Networking Utilities
+#
+# CONFIG_NETUTILS_CODECS is not set
+# CONFIG_NETUTILS_DHCPC is not set
+# CONFIG_NETUTILS_DHCPD is not set
+# CONFIG_NETUTILS_FTPC is not set
+# CONFIG_NETUTILS_FTPD is not set
+# CONFIG_NETUTILS_JSON is not set
+# CONFIG_NETUTILS_RESOLV is not set
+# CONFIG_NETUTILS_SMTP is not set
+# CONFIG_NETUTILS_TELNETD is not set
+# CONFIG_NETUTILS_TFTPC is not set
+# CONFIG_NETUTILS_THTTPD is not set
+# CONFIG_NETUTILS_UIPLIB is not set
+# CONFIG_NETUTILS_WEBCLIENT is not set
+
+#
+# ModBus
+#
+
+#
+# FreeModbus
+#
+# CONFIG_MODBUS is not set
+
+#
+# NSH Library
+#
+# CONFIG_NSH_LIBRARY is not set
+
+#
+# NxWidgets/NxWM
+#
+
+#
+# System NSH Add-Ons
+#
+
+#
+# Custom Free Memory Command
+#
+# CONFIG_SYSTEM_FREE is not set
+
+#
+# I2C tool
+#
+
+#
+# FLASH Program Installation
+#
+# CONFIG_SYSTEM_INSTALL is not set
+
+#
+# readline()
+#
+# CONFIG_SYSTEM_READLINE is not set
+
+#
+# Power Off
+#
+# CONFIG_SYSTEM_POWEROFF is not set
+
+#
+# RAMTRON
+#
+# CONFIG_SYSTEM_RAMTRON is not set
+
+#
+# SD Card
+#
+# CONFIG_SYSTEM_SDCARD is not set
+
+#
+# Sysinfo
+#
+# CONFIG_SYSTEM_SYSINFO is not set
diff --git a/nuttx/configs/stm32f4discovery/cxxtest/setenv.sh b/nuttx/configs/stm32f4discovery/cxxtest/setenv.sh
new file mode 100755
index 000000000..a3c297c76
--- /dev/null
+++ b/nuttx/configs/stm32f4discovery/cxxtest/setenv.sh
@@ -0,0 +1,75 @@
+#!/bin/bash
+# configs/stm32f4discovery/cxxtest/setenv.sh
+#
+#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+if [ "$_" = "$0" ] ; then
+  echo "You must source this script, not run it!" 1>&2
+  exit 1
+fi
+
+WD=`pwd`
+if [ ! -x "setenv.sh" ]; then
+  echo "This script must be executed from the top-level NuttX build directory"
+  exit 1
+fi
+
+if [ -z "${PATH_ORIG}" ]; then
+  export PATH_ORIG="${PATH}"
+fi
+
+# This is the Cygwin path to the location where I installed the RIDE
+# toolchain under windows.  You will also have to edit this if you install
+# the RIDE toolchain in any other location
+#export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/Raisonance/Ride/arm-gcc/bin"
+
+# This is the Cygwin path to the location where I installed the CodeSourcery
+# toolchain under windows.  You will also have to edit this if you install
+# the CodeSourcery toolchain in any other location
+export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery G++ Lite/bin"
+
+# These are the Cygwin paths to the locations where I installed the Atollic
+# toolchain under windows.  You will also have to edit this if you install
+# the Atollic toolchain in any other location.  /usr/bin is added before
+# the Atollic bin path because there is are binaries named gcc.exe and g++.exe
+# at those locations as well.
+#export TOOLCHAIN_BIN="/usr/bin:/cygdrive/c/Program Files (x86)/Atollic/TrueSTUDIO for ARM Pro 2.3.0/ARMTools/bin"
+#export TOOLCHAIN_BIN="/usr/bin:/cygdrive/c/Program Files (x86)/Atollic/TrueSTUDIO for STMicroelectronics STM32 Lite 2.3.0/ARMTools/bin"
+
+# This is the Cygwin path to the location where I build the buildroot
+# toolchain.
+#export TOOLCHAIN_BIN="${WD}/../misc/buildroot/build_arm_nofpu/staging_dir/bin"
+
+# Add the path to the toolchain to the PATH varialble
+export PATH="${TOOLCHAIN_BIN}:/sbin:/usr/sbin:${PATH_ORIG}"
+
+echo "PATH : ${PATH}"
diff --git a/nuttx/configs/stm32f4discovery/ostest/defconfig b/nuttx/configs/stm32f4discovery/ostest/defconfig
index 29d6b30eb..a644b42ec 100644
--- a/nuttx/configs/stm32f4discovery/ostest/defconfig
+++ b/nuttx/configs/stm32f4discovery/ostest/defconfig
@@ -251,7 +251,7 @@ CONFIG_SDCLONE_DISABLE=y
 # CONFIG_SCHED_WAITPID is not set
 # CONFIG_SCHED_ATEXIT is not set
 # CONFIG_SCHED_ONEXIT is not set
-CONFIG_USER_ENTRYPOINT="elf_main"
+CONFIG_USER_ENTRYPOINT="ostest_main"
 CONFIG_DISABLE_OS_API=y
 # CONFIG_DISABLE_CLOCK is not set
 # CONFIG_DISABLE_POSIX_TIMERS is not set