Added a test of posix_spawn()

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5507 42af7a65-404d-4744-a932-0658087f49c3

18 files changed, 1605 insertions, 31 deletions

diff --git a/apps/ChangeLog.txt b/apps/ChangeLog.txt
index cd15b430d..6b63527a7 100644
--- a/apps/ChangeLog.txt
+++ b/apps/ChangeLog.txt
@@ -461,4 +461,5 @@
 	  the USB HID keyboard report data.
 	* apps/examples/wlan: Remove non-functional example.
 	* apps/examples/ostest/vfork.c:  Added a test of vfork().
+	* apps/exampes/posix_spawn: Added a test of poxis_spawn().
 
diff --git a/apps/examples/Kconfig b/apps/examples/Kconfig
index b0cbd7088..ec0a97dd4 100644
--- a/apps/examples/Kconfig
+++ b/apps/examples/Kconfig
@@ -39,6 +39,7 @@ source "$APPSDIR/examples/pashello/Kconfig"
 source "$APPSDIR/examples/pipe/Kconfig"
 source "$APPSDIR/examples/poll/Kconfig"
 source "$APPSDIR/examples/pwm/Kconfig"
+source "$APPSDIR/examples/posix_spawn/Kconfig"
 source "$APPSDIR/examples/qencoder/Kconfig"
 source "$APPSDIR/examples/relays/Kconfig"
 source "$APPSDIR/examples/rgmp/Kconfig"
diff --git a/apps/examples/elf/tests/Makefile b/apps/examples/elf/tests/Makefile
index 778dd6480..755199506 100644
--- a/apps/examples/elf/tests/Makefile
+++ b/apps/examples/elf/tests/Makefile
@@ -66,7 +66,7 @@ SYMTAB_SRC = $(TESTS_DIR)/symtab.c
 
 define DIR_template
 $(1)_$(2):
-	@$(MAKE) -C $(1) $(3) TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" ROMFS_DIR="$(ROMFS_DIR)" CROSSDEV=$(CROSSDEV)
+	$(Q) $(MAKE) -C $(1) $(3) TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" ROMFS_DIR="$(ROMFS_DIR)" CROSSDEV=$(CROSSDEV)
 endef
 
 all: $(ROMFS_HDR) $(DIRLIST_HDR) $(SYMTAB_SRC)
@@ -87,7 +87,7 @@ install: $(foreach DIR, $(BUILD_SUBDIRS), $(DIR)_install)
 # Create the romfs directory
 
 $(ROMFS_DIR):
-	@mkdir $(ROMFS_DIR)
+	$(Q) mkdir $(ROMFS_DIR)
 
 # Populate the romfs directory
 
@@ -96,25 +96,25 @@ populate:  $(ROMFS_DIR) build install
 # Create the romfs.img file from the populated romfs directory
 
 $(ROMFS_IMG): populate
-	@genromfs -f $@ -d $(ROMFS_DIR) -V "ELFTEST"
+	$(Q) genromfs -f $@ -d $(ROMFS_DIR) -V "ELFTEST"
 
 # Create the romfs.h header file from the romfs.img file
 
 $(ROMFS_HDR) : $(ROMFS_IMG)
-	@(cd $(TESTS_DIR); xxd -i romfs.img | sed -e "s/^unsigned/static const unsigned/g" >$@)
+	$(Q) (cd $(TESTS_DIR); xxd -i romfs.img | sed -e "s/^unsigned/static const unsigned/g" >$@)
 
 # Create the dirlist.h header file from the romfs directory 
 
 $(DIRLIST_HDR) : populate
-	@$(TESTS_DIR)/mkdirlist.sh $(ROMFS_DIR) >$@
+	$(Q) $(TESTS_DIR)/mkdirlist.sh $(ROMFS_DIR) >$@
 
-# Create the exported symbol table list from the derived *-thunk.S files
+# Create the exported symbol table
 
 $(SYMTAB_SRC): build
-	@$(TESTS_DIR)/mksymtab.sh -t varlist.tmp $(ROMFS_DIR) >$@
+	$(Q) $(TESTS_DIR)/mksymtab.sh $(ROMFS_DIR) >$@
 
 # Clean each subdirectory
 
 clean: $(foreach DIR, $(ALL_SUBDIRS), $(DIR)_clean)
-	@rm -f $(ROMFS_HDR) $(ROMFS_IMG) $(SYMTAB_SRC) varlist.tmp
-	@rm -rf $(ROMFS_DIR) $(DIRLIST_HDR)
+	$(Q) rm -f $(ROMFS_HDR) $(DIRLIST_HDR) $(ROMFS_IMG) $(SYMTAB_SRC)
+	$(Q) rm -rf $(ROMFS_DIR)
diff --git a/apps/examples/elf/tests/mksymtab.sh b/apps/examples/elf/tests/mksymtab.sh
index 56be10f73..51408a89c 100755
--- a/apps/examples/elf/tests/mksymtab.sh
+++ b/apps/examples/elf/tests/mksymtab.sh
@@ -1,22 +1,6 @@
 #!/bin/bash
 
-usage="Usage: $0 [-t <tmp-file>] <test-dir-path>"
-
-# Check for the optional tempory file name
-
-tmpfile=varlist.tmp
-if [ "X${1}" = "X-t" ]; then
-	shift
-	tmpfile=$1
-	shift
-
-	if [ -z "$tmpfile" ]; then
-		echo "ERROR: Missing <tmpfile>"
-		echo ""
-		echo $usage
-		exit 1
-	fi
-fi
+usage="Usage: $0 <test-dir-path>"
 
 # Check for the required ROMFS directory path
 
diff --git a/apps/examples/nxflat/tests/Makefile b/apps/examples/nxflat/tests/Makefile
index 4979c7fd4..53e43288f 100644
--- a/apps/examples/nxflat/tests/Makefile
+++ b/apps/examples/nxflat/tests/Makefile
@@ -97,7 +97,7 @@ $(SYMTAB): build
 # Clean each subdirectory
 
 clean: $(foreach DIR, $(SUBDIRS), $(DIR)_clean)
-	@rm -f $(ROMFS_HDR) $(ROMFS_IMG) $(SYMTAB)
-	@rm -rf $(ROMFS_DIR) $(ROMFS_DIRLIST)
+	@rm -f $(ROMFS_HDR) $(ROMFS_DIRLIST) $(ROMFS_IMG) $(SYMTAB)
+	@rm -rf $(ROMFS_DIR)
 
 
diff --git a/apps/examples/posix_spawn/Kconfig b/apps/examples/posix_spawn/Kconfig
new file mode 100644
index 000000000..508065913
--- /dev/null
+++ b/apps/examples/posix_spawn/Kconfig
@@ -0,0 +1,29 @@
+#
+# For a description of the syntax of this configuration file,
+# see misc/tools/kconfig-language.txt.
+#
+
+config EXAMPLES_POSIXSPAWN
+	bool "posix_spawn Unit Test"
+	default n
+	---help---
+		Enable the posix_spawn() unit test
+
+if EXAMPLES_POSIXSPAWN
+config EXAMPLES_POSIXSPAWN_DEVMINOR
+	int "ROMFS Minor Device Number"
+	default 0
+	---help---
+		The minor device number of the ROMFS block. For example, the N in /dev/ramN.
+		Used for registering the RAM block driver that will hold the ROMFS file system
+		containing the ELF executables to be tested.  Default: 0
+
+config EXAMPLES_POSIXSPAWN_DEVPATH
+	string "ROMFS Devie Path"
+	default "/dev/ram0"
+	---help---
+		The path to the ROMFS block driver device.  This must match EXAMPLES_POSIXSPAWN_DEVMINOR.
+		Used for registering the RAM block driver that will hold the ROMFS file system
+		containing the ELF executables to be tested.  Default: "/dev/ram0"
+
+endif
diff --git a/apps/examples/posix_spawn/Makefile b/apps/examples/posix_spawn/Makefile
new file mode 100644
index 000000000..d21c8f856
--- /dev/null
+++ b/apps/examples/posix_spawn/Makefile
@@ -0,0 +1,110 @@
+############################################################################
+# apps/examples/posix_spawn/Makefile
+#
+#   Copyright (C) 2013 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)/Make.defs
+include $(APPDIR)/Make.defs
+
+# ELF Example
+
+ASRCS =
+CSRCS = spawn_main.c symtab.c
+
+AOBJS = $(ASRCS:.S=$(OBJEXT))
+COBJS = $(CSRCS:.c=$(OBJEXT))
+
+SRCS = $(ASRCS) $(CSRCS)
+OBJS = $(AOBJS) $(COBJS)
+
+ifeq ($(CONFIG_WINDOWS_NATIVE),y)
+  BIN		= ..\..\libapps$(LIBEXT)
+else
+ifeq ($(WINTOOL),y)
+  BIN		= ..\\..\\libapps$(LIBEXT)
+else
+  BIN		= ../../libapps$(LIBEXT)
+endif
+endif
+
+ROOTDEPPATH	= --dep-path . --dep-path filesystem
+
+# Build targets
+
+VPATH = filesystem
+
+all: .built
+.PHONY: really_build clean_filesystem clean depend distclean
+
+$(AOBJS): %$(OBJEXT): %.S
+	$(call ASSEMBLE, $<, $@)
+
+$(COBJS): %$(OBJEXT): %.c
+	$(call COMPILE, $<, $@)
+
+# This is a little messy.  The build is broken into two pieces:  (1) the
+# filesystem/ subdir build that auto-generates several files, and (2) the real
+# build.  This is done because we need a fresh build context after auto-
+# generating the source files.
+
+really_build: $(OBJS)
+	$(call ARCHIVE, $(BIN), $(OBJS))
+	@touch .built
+
+.built:
+	@$(MAKE) -C filesystem TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" CROSSDEV=$(CROSSDEV)
+	@$(MAKE) TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" really_build
+
+context:
+
+# We can't make dependencies in this directory because the required
+# header files may not yet exist.
+
+.depend:
+	@touch $@
+
+depend: .depend
+
+clean_filesystem:
+	@$(MAKE) -C filesystem TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" CROSSDEV=$(CROSSDEV) clean
+
+clean: clean_filesystem
+	$(call DELFILE, .built)
+	$(call CLEAN)
+
+distclean: clean
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
+
+-include Make.dep
diff --git a/apps/examples/posix_spawn/filesystem/Makefile b/apps/examples/posix_spawn/filesystem/Makefile
new file mode 100644
index 000000000..19a02bb80
--- /dev/null
+++ b/apps/examples/posix_spawn/filesystem/Makefile
@@ -0,0 +1,85 @@
+############################################################################
+# apps/examples/posix_spawn/filesystem/Makefile
+#
+#   Copyright (C) 2013 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)/Make.defs
+include $(APPDIR)$(DELIM)Make.defs
+
+SPAWN_DIR = $(APPDIR)$(DELIM)examples$(DELIM)posix_spawn
+FILESYSTEM_DIR = $(SPAWN_DIR)$(DELIM)filesystem
+ROMFS_DIR = $(FILESYSTEM_DIR)$(DELIM)romfs
+ROMFS_IMG = $(FILESYSTEM_DIR)$(DELIM)romfs.img
+ROMFS_HDR = $(FILESYSTEM_DIR)$(DELIM)romfs.h
+SYMTAB_SRC = $(FILESYSTEM_DIR)$(DELIM)symtab.c
+
+all: $(ROMFS_HDR) $(SYMTAB_SRC)
+.PHONY: all program clean install populate
+
+# Create the romfs directory
+
+$(ROMFS_DIR):
+	$(Q) mkdir $(ROMFS_DIR)
+
+# Build the test program
+
+program: $(ROMFS_DIR)
+	$(Q) $(MAKE) -C program program TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" ROMFS_DIR="$(ROMFS_DIR)"
+
+# Install the test program in the romfs directory
+
+install: program testdata.txt
+	$(Q) $(MAKE) -C program install TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" ROMFS_DIR="$(ROMFS_DIR)"
+	$(Q) install --mode=0644 testdata.txt $(ROMFS_DIR)/testdata.txt
+
+# Create the romfs.img file from the romfs directory
+
+$(ROMFS_IMG): install
+	$(Q) genromfs -f $@ -d $(ROMFS_DIR) -V "POSIXSPAWN"
+
+# Create the romfs.h header file from the romfs.img file
+
+$(ROMFS_HDR) : $(ROMFS_IMG)
+	$(Q) (cd $(FILESYSTEM_DIR); xxd -i romfs.img | sed -e "s/^unsigned/static const unsigned/g" >$@)
+
+# Create the exported symbol table
+
+$(SYMTAB_SRC): program
+	$(Q) $(FILESYSTEM_DIR)$(DELIM)mksymtab.sh $(ROMFS_DIR) >$@
+
+# Clean each subdirectory
+
+clean:
+	$(Q) $(MAKE) -C program clean TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" ROMFS_DIR="$(ROMFS_DIR)"
+	$(Q) rm -f $(ROMFS_HDR) $(ROMFS_IMG) $(SYMTAB_SRC)
+	$(Q) rm -rf $(ROMFS_DIR)
diff --git a/apps/examples/posix_spawn/filesystem/mksymtab.sh b/apps/examples/posix_spawn/filesystem/mksymtab.sh
new file mode 100755
index 000000000..51408a89c
--- /dev/null
+++ b/apps/examples/posix_spawn/filesystem/mksymtab.sh
@@ -0,0 +1,51 @@
+#!/bin/bash
+
+usage="Usage: $0 <test-dir-path>"
+
+# Check for the required ROMFS directory path
+
+dir=$1
+if [ -z "$dir" ]; then
+	echo "ERROR: Missing <test-dir-path>"
+	echo ""
+	echo $usage
+	exit 1
+fi
+
+if [ ! -d "$dir" ]; then
+	echo "ERROR: Directory $dir does not exist"
+	echo ""
+	echo $usage
+	exit 1
+fi
+
+# Extract all of the undefined symbols from the ELF files and create a
+# list of sorted, unique undefined variable names.
+
+varlist=`find ${dir} -executable -type f | xargs nm | fgrep ' U ' | sed -e "s/^[ ]*//g" | cut -d' ' -f2 | sort | uniq`
+
+# Now output the symbol table as a structure in a C source file.  All
+# undefined symbols are declared as void* types.  If the toolchain does
+# any kind of checking for function vs. data objects, then this could
+# faile
+
+echo "#include <nuttx/compiler.h>"
+echo "#include <nuttx/binfmt/symtab.h>"
+echo ""
+
+for var in $varlist; do
+	echo "extern void *${var};"
+done
+
+echo ""
+echo "const struct symtab_s exports[] = "
+echo "{"
+
+for var in $varlist; do
+	echo "  {\"${var}\", &${var}},"
+done
+
+echo "};"
+echo ""
+echo "const int nexports = sizeof(exports) / sizeof(struct symtab_s);"
+
diff --git a/apps/examples/posix_spawn/filesystem/program/Makefile b/apps/examples/posix_spawn/filesystem/program/Makefile
new file mode 100644
index 000000000..cf55797b2
--- /dev/null
+++ b/apps/examples/posix_spawn/filesystem/program/Makefile
@@ -0,0 +1,59 @@
+############################################################################
+# examples/posix_spawn/filesystem/program/Makefile
+#
+#   Copyright (C) 2013 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)/Make.defs
+
+BIN = program
+
+SRCS = $(BIN).c
+OBJS = $(SRCS:.c=.o)
+
+all: $(BIN)
+
+$(OBJS): %.o: %.c
+	@echo "CC: $<"
+	$(Q) $(CC) -c $(CELFFLAGS) $< -o $@
+
+$(BIN): $(OBJS)
+	@echo "LD: $<"
+	$(Q) $(LD) $(LDELFFLAGS) -o $@ $^
+
+clean: 
+	$(call DELFILE, $(BIN))
+	$(call CLEAN)
+
+install:
+	$(Q) mkdir -p $(ROMFS_DIR)
+	$(Q) install --mode=0755 $(BIN) $(ROMFS_DIR)/$(BIN)
diff --git a/apps/examples/posix_spawn/filesystem/program/program.c b/apps/examples/posix_spawn/filesystem/program/program.c
new file mode 100644
index 000000000..f63b559c8
--- /dev/null
+++ b/apps/examples/posix_spawn/filesystem/program/program.c
@@ -0,0 +1,60 @@
+/****************************************************************************
+ * examples/posix_spawn/filesystem/program/program.c
+ *
+ *   Copyright (C) 2013 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <stdio.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+int main(int argc, char **argv)
+{
+  int ch;
+
+  /* stdin should have been redirected to testdata.txt.  Read and print until
+   * we hit the end of file.
+   */
+
+  while ((ch = getchar()) != EOF)
+    {
+      putchar(ch);
+    }
+
+  return 0;
+}
diff --git a/apps/examples/posix_spawn/filesystem/testdata.txt b/apps/examples/posix_spawn/filesystem/testdata.txt
new file mode 100644
index 000000000..bb581fbb5
--- /dev/null
+++ b/apps/examples/posix_spawn/filesystem/testdata.txt
@@ -0,0 +1,2 @@
+Now is the time for all good men to come to the aid of their party.
+
diff --git a/apps/examples/posix_spawn/spawn_main.c b/apps/examples/posix_spawn/spawn_main.c
new file mode 100644
index 000000000..3e3a7b1b1
--- /dev/null
+++ b/apps/examples/posix_spawn/spawn_main.c
@@ -0,0 +1,356 @@
+/****************************************************************************
+ * examples/posix_spawn/spawn_main.c
+ *
+ *   Copyright (C) 2013 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+
+#include <sys/mount.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <spawn.h>
+#include <debug.h>
+#include <errno.h>
+
+#include <nuttx/ramdisk.h>
+#include <nuttx/binfmt/elf.h>
+#include <nuttx/binfmt/symtab.h>
+
+#include "filesystem/romfs.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* Check configuration.  This is not all of the configuration settings that
+ * are required -- only the more obvious.
+ */
+
+#if CONFIG_NFILE_DESCRIPTORS < 1
+#  error "You must provide file descriptors via CONFIG_NFILE_DESCRIPTORS in your configuration file"
+#endif
+
+#ifdef CONFIG_BINFMT_DISABLE
+#  error "The binary loader is disabled (CONFIG_BINFMT_DISABLE)!"
+#endif
+
+#ifndef CONFIG_ELF
+#  error "You must select CONFIG_ELF in your configuration file"
+#endif
+
+#ifndef CONFIG_FS_ROMFS
+#  error "You must select CONFIG_FS_ROMFS in your configuration file"
+#endif
+
+#ifdef CONFIG_DISABLE_MOUNTPOINT
+#  error "You must not disable mountpoints via CONFIG_DISABLE_MOUNTPOINT in your configuration file"
+#endif
+
+#ifdef CONFIG_BINFMT_DISABLE
+#  error "You must not disable loadable modules via CONFIG_BINFMT_DISABLE in your configuration file"
+#endif
+
+/* Describe the ROMFS file system */
+
+#define SECTORSIZE   512
+#define NSECTORS(b)  (((b)+SECTORSIZE-1)/SECTORSIZE)
+#define MOUNTPT      "/mnt/romfs"
+
+#ifndef CONFIG_EXAMPLES_ELF_DEVMINOR
+#  define CONFIG_EXAMPLES_ELF_DEVMINOR 0
+#endif
+
+#ifndef CONFIG_EXAMPLES_ELF_DEVPATH
+#  define CONFIG_EXAMPLES_ELF_DEVPATH "/dev/ram0"
+#endif
+
+/* If CONFIG_DEBUG is enabled, use dbg instead of printf so that the
+ * output will be synchronous with the debug output.
+ */
+
+#ifdef CONFIG_CPP_HAVE_VARARGS
+#  ifdef CONFIG_DEBUG
+#    define message(format, arg...) dbg(format, ##arg)
+#    define err(format, arg...)     dbg(format, ##arg)
+#  else
+#    define message(format, arg...) printf(format, ##arg)
+#    define err(format, arg...)     fprintf(stderr, format, ##arg)
+#  endif
+#else
+#  ifdef CONFIG_DEBUG
+#    define message                 dbg
+#    define err                     dbg
+#  else
+#    define message                 printf
+#    define err                     printf
+#  endif
+#endif
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static unsigned int g_mminitial;  /* Initial memory usage */
+static unsigned int g_mmstep;     /* Memory Usage at beginning of test step */
+
+static const char delimiter[] =
+  "****************************************************************************";
+static const char program[] = "program";
+static const char data[]    = "testdata.txt";
+
+static char fullpath[128];
+
+/****************************************************************************
+ * Symbols from Auto-Generated Code
+ ****************************************************************************/
+
+extern const struct symtab_s exports[];
+extern const int nexports;
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: mm_update
+ ****************************************************************************/
+
+static void mm_update(FAR unsigned int *previous, FAR const char *msg)
+{
+  struct mallinfo mmcurrent;
+
+  /* Get the current memory usage */
+
+#ifdef CONFIG_CAN_PASS_STRUCTS
+  mmcurrent = mallinfo();
+#else
+  (void)mallinfo(&mmcurrent);
+#endif
+
+  /* Show the change from the previous time */
+
+  printf("\nMemory Usage %s:\n", msg);
+  printf("  Before: %8u After: %8u Change: %8d\n",
+         *previous, mmcurrent.uordblks, (int)mmcurrent.uordblks - (int)*previous);
+
+  /* Set up for the next test */
+
+  *previous =  mmcurrent.uordblks;
+}
+
+/****************************************************************************
+ * Name: mm_initmonitor
+ ****************************************************************************/
+
+static void mm_initmonitor(void)
+{
+  struct mallinfo mmcurrent;
+
+#ifdef CONFIG_CAN_PASS_STRUCTS
+  mmcurrent = mallinfo();
+#else
+  (void)mallinfo(&mmcurrent);
+#endif
+
+  g_mminitial = mmcurrent.uordblks;
+  g_mmstep    = mmcurrent.uordblks;
+
+  printf("Initial memory usage: %d\n", mmcurrent.uordblks);
+}
+
+/****************************************************************************
+ * Name: testheader
+ ****************************************************************************/
+
+static inline void testheader(FAR const char *progname)
+{
+  message("\n%s\n* Executing %s\n%s\n\n", delimiter, progname, delimiter);
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: spawn_main
+ ****************************************************************************/
+
+int spawn_main(int argc, char *argv[])
+{
+  posix_spawn_file_actions_t file_actions;
+  posix_spawnattr_t attr;
+  FAR const char *filepath;
+  pid_t pid;
+  int ret;
+
+  /* Initialize the memory monitor */
+
+  mm_initmonitor();
+
+  /* Initialize the ELF binary loader */
+
+  message("Initializing the ELF binary loader\n");
+  ret = elf_initialize();
+  if (ret < 0)
+    {
+      err("ERROR: Initialization of the ELF loader failed: %d\n", ret);
+      exit(1);
+    }
+
+  mm_update(&g_mmstep, "after elf_initialize");
+
+  /* Create a ROM disk for the ROMFS filesystem */
+
+  message("Registering romdisk at /dev/ram%d\n", CONFIG_EXAMPLES_ELF_DEVMINOR);
+  ret = romdisk_register(CONFIG_EXAMPLES_ELF_DEVMINOR, (FAR uint8_t *)romfs_img,
+                         NSECTORS(romfs_img_len), SECTORSIZE);
+  if (ret < 0)
+    {
+      err("ERROR: romdisk_register failed: %d\n", ret);
+      elf_uninitialize();
+      exit(1);
+    }
+
+  mm_update(&g_mmstep, "after romdisk_register");
+
+  /* Mount the file system */
+
+  message("Mounting ROMFS filesystem at target=%s with source=%s\n",
+         MOUNTPT, CONFIG_EXAMPLES_ELF_DEVPATH);
+
+  ret = mount(CONFIG_EXAMPLES_ELF_DEVPATH, MOUNTPT, "romfs", MS_RDONLY, NULL);
+  if (ret < 0)
+    {
+      err("ERROR: mount(%s,%s,romfs) failed: %s\n",
+          CONFIG_EXAMPLES_ELF_DEVPATH, MOUNTPT, errno);
+      elf_uninitialize();
+    }
+
+  mm_update(&g_mmstep, "after mount");
+
+  /* Does the system support the PATH variable?  Has the PATH variable
+   * already been set?  If YES and NO, then set the PATH variable to
+   * the ROMFS mountpoint.
+   */
+
+#if defined(CONFIG_BINFMT_EXEPATH) && !defined(CONFIG_PATH_INITIAL)
+  (void)setenv("PATH", MOUNTPT, 1);
+#endif
+
+  /* Make sure that we are using our symbol take */
+
+  exec_setsymtab(exports, nexports);
+
+  /* Output a seperated so that we can clearly discriminate the output of
+   * this program from the others.
+   */
+
+  testheader(program);
+
+  /* Initialize the attributes file actions structure */
+
+  ret = posix_spawn_file_actions_init(&file_actions);
+  if (ret != 0)
+    {
+      err("ERROR: posix_spawn_file_actions_init failed: %d\n", ret);
+    }
+
+  ret = posix_spawnattr_init(&attr);
+  if (ret != 0)
+    {
+      err("ERROR: posix_spawnattr_init failed: %d\n", ret);
+    }
+
+  /* Set up to close stdin (0) and open testdata.txt as the program input */
+
+  ret = posix_spawn_file_actions_addclose(&file_actions, 0);
+  if (ret != 0)
+    {
+      err("ERROR: posix_spawn_file_actions_addclose failed: %d\n", ret);
+    }
+
+  snprintf(fullpath, 128, "%s/%s", MOUNTPT, data);
+  ret = posix_spawn_file_actions_addopen(&file_actions, 0, fullpath, O_RDONLY, 0644);
+  if (ret != 0)
+    {
+      err("ERROR: posix_spawn_file_actions_addopen failed: %d\n", ret);
+    }
+  
+  /* If the binary loader does not support the PATH variable, then
+   * create the full path to the executable program.  Otherwise,
+   * use the relative path so that the binary loader will have to
+   * search the PATH variable to find the executable.
+   */
+
+#ifdef CONFIG_BINFMT_EXEPATH
+  filepath = program;
+#else
+  snprintf(fullpath, 128, "%s/%s", MOUNTPT, program);
+  filepath = fullpath;
+#endif
+
+  /* Execute the program */
+
+  mm_update(&g_mmstep, "before posix_spawn");
+
+  ret = posix_spawn(&pid, filepath, &file_actions, &attr, NULL, NULL);
+  if (ret != 0)
+    {
+      err("ERROR: posix_spawn failed: %d\n", ret);
+    }
+
+  sleep(1);
+  mm_update(&g_mmstep, "after posix_spawn");
+
+  /* Clean-up */
+
+  (void)posix_spawn_file_actions_destroy(&file_actions);
+  (void)posix_spawnattr_destroy(&attr);
+  elf_uninitialize();
+
+  mm_update(&g_mmstep, "End-of-Test");
+  return 0;
+}
diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog
index 421b1ca60..7ddc4901e 100644
--- a/nuttx/ChangeLog
+++ b/nuttx/ChangeLog
@@ -3903,4 +3903,6 @@
 	  untested and undocumented.
 	* drivers/usbdev/pl2303.c:  Fix typols in the PL2303 driver
 	  (from Max Holtzberg).
+	* configs/stm32f4discovery/posix_spawn:  Added a configuration
+	  that can be used for testing posix_spawn().
 
diff --git a/nuttx/configs/stm32f4discovery/posix_spawn/Make.defs b/nuttx/configs/stm32f4discovery/posix_spawn/Make.defs
new file mode 100644
index 000000000..34b9f7feb
--- /dev/null
+++ b/nuttx/configs/stm32f4discovery/posix_spawn/Make.defs
@@ -0,0 +1,130 @@
+############################################################################
+# configs/stm32f4discovery/posix_spawn/Make.defs
+#
+#   Copyright (C) 2011-2012 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
+include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
+
+LDSCRIPT = ld.script
+
+ifeq ($(WINTOOL),y)
+  # Windows-native toolchains
+  DIRLINK = $(TOPDIR)/tools/copydir.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)/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 $(TOPDIR)/include/cxx
+  ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
+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 $(ARCHCCVERSION) | cut -d'.' -f1}
+
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  ARCHOPTIMIZATION = -g
+else
+  ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
+endif
+
+ARCHCFLAGS = -fno-builtin
+ARCHCXXFLAGS = -fno-builtin -fno-exceptions -fno-rtti
+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__
+
+# NXFLAT module definitions
+
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-pcrel.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
+
+# ELF module definitions
+
+CELFFLAGS = $(CFLAGS) -mlong-calls # --target1-abs
+CXXELFFLAGS = $(CXXFLAGS) -mlong-calls # --target1-abs
+
+LDELFFLAGS = -r -e main
+ifeq ($(WINTOOL),y)
+  LDELFFLAGS += -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/gnu-elf.ld}"
+else
+  LDELFFLAGS += -T $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/gnu-elf.ld
+endif
+
+# File extensions
+
+OBJEXT = .o
+LIBEXT = .a
+EXEEXT =
+
+# Linker flags
+
+ifneq ($(CROSSDEV),arm-nuttx-elf-)
+  LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  LDFLAGS += -g
+endif
+
+# Host tools
+
+HOSTCC = gcc
+HOSTINCLUDES = -I.
+HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
+HOSTLDFLAGS =
+
diff --git a/nuttx/configs/stm32f4discovery/posix_spawn/defconfig b/nuttx/configs/stm32f4discovery/posix_spawn/defconfig
new file mode 100644
index 000000000..b908393d8
--- /dev/null
+++ b/nuttx/configs/stm32f4discovery/posix_spawn/defconfig
@@ -0,0 +1,625 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# Nuttx/ Configuration
+#
+CONFIG_NUTTX_NEWCONFIG=y
+
+#
+# Build Setup
+#
+# CONFIG_EXPERIMENTAL is not set
+# CONFIG_HOST_LINUX is not set
+# CONFIG_HOST_OSX is not set
+CONFIG_HOST_WINDOWS=y
+# CONFIG_HOST_OTHER is not set
+# CONFIG_WINDOWS_NATIVE is not set
+CONFIG_WINDOWS_CYGWIN=y
+# CONFIG_WINDOWS_MSYS is not set
+# CONFIG_WINDOWS_OTHER 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 is not set
+
+#
+# Customize Header Files
+#
+# CONFIG_ARCH_STDBOOL_H is not set
+# CONFIG_ARCH_MATH_H is not set
+# CONFIG_ARCH_FLOAT_H is not set
+# 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_LM 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_HAVE_CMNVECTOR=y
+# CONFIG_ARMV7M_CMNVECTOR is not set
+# CONFIG_ARCH_FPU is not set
+CONFIG_ARCH_HAVE_MPU=y
+# CONFIG_ARMV7M_MPU is not set
+CONFIG_BOARD_LOOPSPERMSEC=16717
+# CONFIG_ARCH_CALIBRATION is not set
+
+#
+# ARMV7M Configuration Options
+#
+# CONFIG_ARMV7M_TOOLCHAIN_ATOLLIC is not set
+# CONFIG_ARMV7M_TOOLCHAIN_BUILDROOT is not set
+# CONFIG_ARMV7M_TOOLCHAIN_CODEREDW is not set
+CONFIG_ARMV7M_TOOLCHAIN_CODESOURCERYW=y
+# CONFIG_ARMV7M_TOOLCHAIN_DEVKITARM is not set
+# CONFIG_ARMV7M_TOOLCHAIN_GNU_EABI is not set
+# CONFIG_ARMV7M_TOOLCHAIN_RAISONANCE 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_STM32F100RC is not set
+# CONFIG_ARCH_CHIP_STM32F100RD is not set
+# CONFIG_ARCH_CHIP_STM32F100RE is not set
+# CONFIG_ARCH_CHIP_STM32F100V8 is not set
+# CONFIG_ARCH_CHIP_STM32F100VB is not set
+# CONFIG_ARCH_CHIP_STM32F100VC is not set
+# CONFIG_ARCH_CHIP_STM32F100VD is not set
+# CONFIG_ARCH_CHIP_STM32F100VE 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_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_BKPSRAM is not set
+# CONFIG_STM32_CAN1 is not set
+# CONFIG_STM32_CAN2 is not set
+# CONFIG_STM32_CCMDATARAM is not set
+# CONFIG_STM32_CRC is not set
+# CONFIG_STM32_CRYP is not set
+# CONFIG_STM32_DMA1 is not set
+# CONFIG_STM32_DMA2 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_FLASH_PREFETCH is not set
+# 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=y
+
+#
+# U[S]ART Configuration
+#
+# CONFIG_USART2_RS485 is not set
+
+#
+# USB Host Configuration
+#
+
+#
+# Architecture Options
+#
+# CONFIG_ARCH_NOINTC is not set
+# CONFIG_ARCH_DMA is not set
+CONFIG_ARCH_IRQPRIO=y
+# CONFIG_CUSTOM_STACK is not set
+# CONFIG_ADDRENV is not set
+CONFIG_ARCH_HAVE_VFORK=y
+CONFIG_ARCH_STACKDUMP=y
+# CONFIG_ENDIAN_BIG is not set
+
+#
+# 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=10
+CONFIG_START_DAY=26
+CONFIG_DEV_CONSOLE=y
+# 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 is not set
+CONFIG_USER_ENTRYPOINT="spawn_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 is not set
+# CONFIG_DISABLE_ENVIRON is not set
+# CONFIG_DISABLE_POLL is not set
+
+#
+# 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_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_DEV_LOWCONSOLE=y
+# CONFIG_16550_UART is not set
+CONFIG_ARCH_HAVE_USART2=y
+CONFIG_MCU_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_FAT is not set
+# CONFIG_FS_RAMMAP is not set
+# CONFIG_FS_NXFFS is not set
+CONFIG_FS_ROMFS=y
+
+#
+# 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_BINFMT_EXEPATH=y
+CONFIG_PATH_INITIAL="/mnt/romfs"
+# CONFIG_NXFLAT is not set
+CONFIG_ELF=y
+CONFIG_ELF_ALIGN_LOG2=2
+CONFIG_ELF_STACKSIZE=2048
+CONFIG_ELF_BUFFERSIZE=128
+CONFIG_ELF_BUFFERINCR=32
+# CONFIG_PIC is not set
+CONFIG_BINFMT_CONSTRUCTORS=y
+CONFIG_SYMTAB_ORDEREDBYNAME=y
+
+#
+# Library Routines
+#
+
+#
+# Standard C Library Options
+#
+CONFIG_STDIO_BUFFER_SIZE=256
+CONFIG_STDIO_LINEBUFFER=y
+CONFIG_NUNGET_CHARS=2
+CONFIG_LIB_HOMEDIR="/"
+# CONFIG_LIBM is not set
+# 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_EXECFUNCS=y
+CONFIG_EXECFUNCS_SYMTAB="exports"
+CONFIG_EXECFUNCS_NSYMBOLS=10
+CONFIG_POSIX_SPAWN_STACKSIZE=768
+# 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
+
+#
+# Non-standard Helper Functions
+#
+# CONFIG_LIB_KBDCODEC is not set
+
+#
+# Basic CXX Support
+#
+# CONFIG_C99_BOOL8 is not set
+CONFIG_HAVE_CXX=y
+# CONFIG_HAVE_CXXINITIALIZE is not set
+# CONFIG_CXX_NEWLONG is not set
+
+#
+# uClibc++ Standard C++ Library
+#
+# CONFIG_UCLIBCXX is not set
+
+#
+# Application Configuration
+#
+
+#
+# Built-In Applications
+#
+# CONFIG_BUILTIN 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 is not set
+# 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_KEYPADTEST 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_POSIXSPAWN=y
+CONFIG_EXAMPLES_POSIXSPAWN_DEVMINOR=0
+CONFIG_EXAMPLES_POSIXSPAWN_DEVPATH="/dev/ram0"
+# 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
+
+#
+# Interpreters
+#
+
+#
+# Interpreters
+#
+# CONFIG_INTERPRETERS_FICL is not set
+# CONFIG_INTERPRETERS_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/posix_spawn/setenv.sh b/nuttx/configs/stm32f4discovery/posix_spawn/setenv.sh
new file mode 100755
index 000000000..c06a15c9c
--- /dev/null
+++ b/nuttx/configs/stm32f4discovery/posix_spawn/setenv.sh
@@ -0,0 +1,79 @@
+#!/bin/bash
+# configs/stm32f4discovery/posix_spawn/setenv.sh
+#
+#   Copyright (C) 2011-2012 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"
+
+# This the the Cygwin path to the location where I built genromfs.  If you use
+# the buildroot toolchain, then genromfs can probably be found in TOOLCHAIN_DIR
+export GENROMFS_PATH="${WD}/../misc/buildroot/build_arm_nofpu/staging_dir/bin"
+
+# Add the path to the toolchain to the PATH varialble
+export PATH="${TOOLCHAIN_BIN}:${GENROMFS_PATH}:/sbin:/usr/sbin:${PATH_ORIG}"
+
+echo "PATH : ${PATH}"
diff --git a/nuttx/libc/unistd/lib_execsymtab.c b/nuttx/libc/unistd/lib_execsymtab.c
index e95107d15..7abb2d74e 100644
--- a/nuttx/libc/unistd/lib_execsymtab.c
+++ b/nuttx/libc/unistd/lib_execsymtab.c
@@ -107,7 +107,7 @@ void exec_getsymtab(FAR struct symtab_s **symtab, FAR int *nsymbols)
    * size are returned as a single atomic operation.
    */
 
-  flags = irqsave();
+  flags     = irqsave();
   *symtab   = g_exec_symtab;
   *nsymbols = g_exec_nsymbols;
   irqrestore(flags);
@@ -138,8 +138,8 @@ void exec_setsymtab(FAR const struct symtab_s *symtab, int nsymbols)
    * size are set as a single atomic operation.
    */
 
-  flags = irqsave();
-  g_exec_symtab = symtab;
+  flags           = irqsave();
+  g_exec_symtab   = symtab;
   g_exec_nsymbols = nsymbols;
   irqrestore(flags);
 }