build-common.sh - stadia-controller/gcc-arm-none-eabi - Git at Google

 # Copyright (c) 2011-2015, ARM Limited
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
 #
 #     * Redistributions of source code must retain the above copyright notice,
 #       this list of conditions and the following disclaimer.
 #     * 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.
 #     * Neither the name of Arm 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 HOLDER 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.

 error () {
     set +u
     echo "$0: error: $@" >&2
     exit 1
     set -u
 }

 warning () {
     set +u
     echo "$0: warning: $@" >&2
     set -u
 }

 copy_dir() {
     set +u
     mkdir -p "$2"

     (cd "$1" && tar cf - .) | (cd "$2" && tar xf -)
     set -u
 }

 copy_dir_clean() {
     set +u
     mkdir -p "$2"
     (cd "$1" && tar cf - \
 	--exclude=CVS --exclude=.svn --exclude=.git --exclude=.pc \
 	--exclude="*~" --exclude=".#*" \
 	--exclude="*.orig" --exclude="*.rej" \
 	.) | (cd "$2" && tar xf -)
     set -u
 }

 # Create source package excluding source control information
 #   parameter 1: base dir of the source tree
 #   parameter 2: dirname of the source tree
 #   parameter 3: target package name
 #   parameter 4-10: additional excluding
 # This function will create bz2 package for files under param1/param2,
 # excluding unnecessary parts, and create package named param2.
 pack_dir_clean() {
     set +u
     tar cjfh $3 \
 	--exclude=CVS --exclude=.svn --exclude=.git --exclude=.pc \
 	--exclude="*~" --exclude=".#*" \
 	--exclude="*.orig" --exclude="*.rej" $4 $5 $6 $7 $8 $9 ${10} \
 	-C $1 $2
     set -u
 }

 # Clean all global shell variables except for those needed by build scripts
 clean_env () {
     set +u
     local var_list
     local var
     var_list=`export|grep "^declare -x"|sed -e "s/declare -x //"|cut -d"=" -f1`

     for var in $var_list ; do
         case $var in
             DEJAGNU|\
             DISPLAY|\
             HOME|\
             LD_LIBRARY_PATH|\
             LOGNAME|\
             PATH|\
             PWD|\
             SHELL|\
             SHLVL|\
             TERM|\
             USER|\
             USERNAME|\
             com.apple.*|\
             XAUTHORITY)
             ;;
         *)
             unset $var
             ;;
         esac
     done

     export LANG=C
     set -u
 }

 # Start a new stack level to save variables
 # Must call this before saving any variables
 saveenv () {
     set +u
     # Force expr return 0 to avoid script fail
     stack_level=`expr $stack_level \+ 1 || true`
     eval stack_list_$stack_level=
     set -u
 }

 # Save a variable to current stack level, and set new value to this var.
 # If a variable has been saved, won't save it. Just set new value
 # Must be called when stack_level > 0
 # $1: variable name
 # $2: new variable value
 saveenvvar () {
     set +u
     if [ $stack_level -le 0 ]; then
         error Must call saveenv before calling saveenvvar
     fi
     local varname="$1"
     local newval="$2"
     eval local oldval=\"\${$varname}\"
     eval local saved=\"\${level_saved_${stack_level}_${varname}}\"
     if [ "x$saved" = "x" ]; then
         # The variable wasn't saved in the level before. Save it
         eval local temp=\"\${stack_list_$stack_level}\"
         eval stack_list_$stack_level=\"$varname $temp\"
         eval save_level_${stack_level}_$varname=\"$oldval\"
         eval level_saved_${stack_level}_$varname="yes"
         eval level_preset_${stack_level}_${varname}=\"\${$varname+set}\"
         #echo Save $varname: \"$oldval\"
     fi
     eval export $varname=\"$newval\"
     #echo $varname set to \"$newval\"
     set -u
 }

 # Restore all variables that have been saved in current stack level
 restoreenv () {
     set +u
     if [ $stack_level -le 0 ]; then
         error "Trying to restore from an empty stack"
     fi

     eval local list=\"\${stack_list_$stack_level}\"
     local varname
     for varname in $list; do
         eval local varname_preset=\"\${level_preset_${stack_level}_${varname}}\"
         if [ "x$varname_preset" = "xset" ] ; then
             eval $varname=\"\${save_level_${stack_level}_$varname}\"
         else
             unset $varname
         fi
         eval level_saved_${stack_level}_$varname=
         # eval echo $varname restore to \\\"\"\${$varname}\"\\\"
     done
     # Force expr return 0 to avoid script fail
     stack_level=`expr $stack_level \- 1 || true`
     set -u
 }

 prependenvvar() {
     set +u
     eval local oldval=\"\$$1\"
     saveenvvar "$1" "$2$oldval"
     set -u
 }

 prepend_path() {
     set +u
     eval local old_path="\"\$$1\""
     if [ x"$old_path" == "x" ]; then
         prependenvvar "$1" "$2"
     else
         prependenvvar "$1" "$2:"
     fi
     set -u
 }

 # Strip binary files as in "strip binary" form, for both native(linux/mac) and mingw.
 strip_binary() {
     set +e
     if [ $# -ne 2 ] ; then
         warning "strip_binary: Missing arguments"
         return 0
     fi
     local strip="$1"
     local bin="$2"

     file $bin | grep -q -P "(\bELF\b)|(\bPE\b)|(\bPE32\b)"
     if [ $? -eq 0 ]; then
         $strip $bin 2>/dev/null || true
     fi

     set -e
 }

 # Copy target libraries from each multilib directories.
 # Usage copy_multi_libs dst_prefix=... src_prefix=... target_gcc=...
 copy_multi_libs() {
     local -a multilibs
     local multilib
     local multi_dir
     local src_prefix
     local dst_prefix
     local src_dir
     local dst_dir
     local target_gcc

     for arg in "$@" ; do
         eval "${arg// /\\ }"
     done

     multilibs=( $("${target_gcc}" -print-multi-lib 2>/dev/null) )
     for multilib in "${multilibs[@]}" ; do
         multi_dir="${multilib%%;*}"
         src_dir=${src_prefix}/${multi_dir}
         dst_dir=${dst_prefix}/${multi_dir}
         cp -f "${src_dir}/libstdc++.a" "${dst_dir}/libstdc++_nano.a"
         cp -f "${src_dir}/libsupc++.a" "${dst_dir}/libsupc++_nano.a"
         cp -f "${src_dir}/libc.a" "${dst_dir}/libc_nano.a"
         cp -f "${src_dir}/libg.a" "${dst_dir}/libg_nano.a"
         cp -f "${src_dir}/librdimon.a" "${dst_dir}/librdimon_nano.a"
         cp -f "${src_dir}/nano.specs" "${dst_dir}/"
         cp -f "${src_dir}/rdimon.specs" "${dst_dir}/"
         cp -f "${src_dir}/nosys.specs" "${dst_dir}/"
         cp -f "${src_dir}/"*crt0.o "${dst_dir}/"
     done
 }

 # Clean up unnecessary global shell variables
 clean_env

 ROOT=`pwd`
 SRCDIR=$ROOT/src

 BUILDDIR_NATIVE=$ROOT/build-native
 BUILDDIR_MINGW=$ROOT/build-mingw
 INSTALLDIR_NATIVE=$ROOT/install-native
 INSTALLDIR_NATIVE_DOC=$ROOT/install-native/share/doc/gcc-arm-none-eabi
 INSTALLDIR_MINGW=$ROOT/install-mingw
 INSTALLDIR_MINGW_DOC=$ROOT/install-mingw/share/doc/gcc-arm-none-eabi

 PACKAGEDIR=$ROOT/pkg

 GMP_VER=6.1.0
 MPFR_VER=3.1.4
 MPC_VER=1.0.3
 ISL_VER=0.15
 EXPAT_VER=2.1.1
 LIBELF_VER=0.8.13
 LIBICONV_VER=1.14
 ZLIB_VER=1.2.8
 PYTHON_WIN_VER=2.7.13

 BINUTILS=binutils
 GCC=gcc
 NEWLIB=newlib
 NEWLIB_NANO=newlib
 GDB=gdb
 SAMPLES=samples
 INSTALLATION=installation
 BUILD_MANUAL=build-manual
 GMP=gmp-$GMP_VER
 MPFR=mpfr-$MPFR_VER
 MPC=mpc-$MPC_VER
 ISL=isl-$ISL_VER
 EXPAT=expat-$EXPAT_VER
 LIBELF=libelf-$LIBELF_VER
 LIBICONV=libiconv-$LIBICONV_VER
 ZLIB=zlib-$ZLIB_VER
 ENV_VAR_UPDATE=EnvVarUpdate
 PYTHON_WIN=python-$PYTHON_WIN_VER

 GMP_PACK=$GMP.tar.bz2
 MPFR_PACK=$MPFR.tar.bz2
 MPC_PACK=$MPC.tar.gz
 ISL_PACK=$ISL.tar.bz2
 EXPAT_PACK=$EXPAT.tar.bz2
 LIBELF_PACK=$LIBELF.tar.gz
 LIBICONV_PACK=$LIBICONV.tar.gz
 ZLIB_PACK=$ZLIB.tar.gz
 ENV_VAR_UPDATE_PACK=$ENV_VAR_UPDATE.7z
 PYTHON_WIN_PACK=$PYTHON_WIN.msi

 GMP_URL=https://gmplib.org/download/gmp/$GMP_PACK
 #MPFR_URL=http://www.mpfr.org/$MPFR/$MPFR_PACK
 MPFR_URL=https://ftp.gnu.org/gnu/mpfr/$MPFR_PACK
 MPC_URL=ftp://ftp.gnu.org/gnu/mpc/$MPC_PACK
 ISL_URL=http://isl.gforge.inria.fr/$ISL_PACK
 EXPAT_URL=https://downloads.sourceforge.net/project/expat/expat/$EXPAT_VER/$EXPAT_PACK
 LIBELF_URL=http://www.mr511.de/software/$LIBELF_PACK
 LIBICONV_URL=https://ftp.gnu.org/pub/gnu/libiconv/$LIBICONV_PACK
 ZLIB_URL=http://www.zlib.net/fossils/$ZLIB_PACK
 ENV_VAR_UPDATE_URL=http://nsis.sourceforge.net/mediawiki/images/a/ad/$ENV_VAR_UPDATE_PACK
 PYTHON_WIN_URL=https://www.python.org/ftp/python/$PYTHON_WIN_VER/$PYTHON_WIN_PACK

 # Set variables according to real environment to make this script can run
 # on Ubuntu and Mac OS X.
 uname_string=`uname | sed 'y/LINUXDARWIN/linuxdarwin/'`
 host_arch=`uname -m | sed 'y/XI/xi/'`
 if [ "x$uname_string" == "xlinux" ] ; then
     BUILD="$host_arch"-linux-gnu
     HOST_NATIVE="$host_arch"-linux-gnu
     READLINK=readlink
     JOBS=`grep ^processor /proc/cpuinfo|wc -l`
     GCC_CONFIG_OPTS_LCPP="--with-host-libstdcxx=-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm"
     TAR=tar
     MD5="md5sum -b"
     PACKAGE_NAME_SUFFIX=linux
 elif [ "x$uname_string" == "xdarwin" ] ; then
     BUILD=x86_64-apple-darwin10
     HOST_NATIVE=x86_64-apple-darwin10
     READLINK=greadlink
     # Disable parallel build for mac as we will randomly run into "Permission denied" issue.
     JOBS=`sysctl -n hw.ncpu`
     #JOBS=1
     GCC_CONFIG_OPTS_LCPP="--with-host-libstdcxx=-static-libgcc -Wl,-lstdc++ -lm"
     TAR=gnutar
     MD5="md5 -r"
     PACKAGE_NAME_SUFFIX=mac
 else
     error "Unsupported build system : $uname_string"
 fi

 PREREQS="GMP MPFR MPC ISL EXPAT LIBELF LIBICONV ZLIB"
 WIN_PREREQS="ENV_VAR_UPDATE PYTHON_WIN"
 if [ "x$BUILD" != "xx86_64-apple-darwin10" ]; then
     PREREQS="$PREREQS $WIN_PREREQS"
 fi

 SCRIPT=$(basename $0)

 # This is a build script, go on
 if [ "${SCRIPT%%-*}" = "build" ]; then

     stack_level=0

     RELEASEDATE=`date +%Y%m%d`
     release_year=${RELEASEDATE:0:4}
     release_month=${RELEASEDATE:4:2}
     case $release_month in
         01|02|03)
             RELEASEVER=${release_year}-q1-update
             ;;
         04|05|06)
             RELEASEVER=${release_year}-q2-update
             ;;
         07|08|09)
             RELEASEVER=${release_year}-q3-update
             ;;
         10|11|12)
             RELEASEVER=${release_year}-q4-major
             ;;
     esac

     RELEASE_FILE=release.txt
     README_FILE=readme.txt
     LICENSE_FILE=license.txt
     SAMPLES_DOS_FILES=$SAMPLES/readme.txt
     BUILD_MANUAL_FILE=How-to-build-toolchain.pdf
     GCC_VER=`cat $SRCDIR/$GCC/gcc/BASE-VER`
     GCC_VER_NAME=`echo $GCC_VER | cut -d'.' -f1`
     # sed -r doesn't exist in Darwin
     if [[ $(uname -s) == "Darwin" ]]
     then
         SEDOPTION='-E'
     else
         SEDOPTION='-r'
     fi
     GCC_VER_SHORT=$GCC_VER_NAME
     HOST_MINGW=i686-w64-mingw32
     HOST_MINGW_TOOL=i686-w64-mingw32
     TARGET=arm-none-eabi
     ENV_CFLAGS=
     ENV_CPPFLAGS=
     ENV_LDFLAGS=
     BINUTILS_CONFIG_OPTS=
     GCC_CONFIG_OPTS=
     GDB_CONFIG_OPTS=
     NEWLIB_CONFIG_OPTS=


     PKGROOTNAME="GNU Tools for Arm Embedded Processors"
     PKGVERSION="$PKGROOTNAME $GCC_VER_NAME-$RELEASEVER"
     BUGURL="https://developer.arm.com/open-source/gnu-toolchain/gnu-rm"

     OBJ_SUFFIX_MINGW=$TARGET-$RELEASEDATE-$HOST_MINGW
     OBJ_SUFFIX_NATIVE=$TARGET-$RELEASEDATE-$HOST_NATIVE
     PACKAGE_NAME=gcc-$TARGET-$GCC_VER_NAME-$RELEASEVER
     PACKAGE_NAME_NATIVE=$PACKAGE_NAME-$PACKAGE_NAME_SUFFIX
     PACKAGE_NAME_MINGW=$PACKAGE_NAME-win32
     INSTALL_PACKAGE_NAME=gcc-$TARGET-$GCC_VER_NAME-$RELEASEVER
     INSTALLBASE="GNU Tools Arm Embedded"
     APPNAME="$PKGVERSION $GCC_VER_SHORT $release_year"

 fi # not a build script
	# Copyright (c) 2011-2015, ARM Limited
	# All rights reserved.
	#
	# Redistribution and use in source and binary forms, with or without
	# modification, are permitted provided that the following conditions are met:
	#
	# * Redistributions of source code must retain the above copyright notice,
	# this list of conditions and the following disclaimer.
	# * 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.
	# * Neither the name of Arm 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 HOLDER 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.

	error () {
	set +u
	echo "$0: error: $@" >&2
	exit 1
	set -u
	}

	warning () {
	set +u
	echo "$0: warning: $@" >&2
	set -u
	}

	copy_dir() {
	set +u
	mkdir -p "$2"

	(cd "$1" && tar cf - .) \| (cd "$2" && tar xf -)
	set -u
	}

	copy_dir_clean() {
	set +u
	mkdir -p "$2"
	(cd "$1" && tar cf - \
	--exclude=CVS --exclude=.svn --exclude=.git --exclude=.pc \
	--exclude="~" --exclude=".#" \
	--exclude=".orig" --exclude=".rej" \
	.) \| (cd "$2" && tar xf -)
	set -u
	}

	# Create source package excluding source control information
	# parameter 1: base dir of the source tree
	# parameter 2: dirname of the source tree
	# parameter 3: target package name
	# parameter 4-10: additional excluding
	# This function will create bz2 package for files under param1/param2,
	# excluding unnecessary parts, and create package named param2.
	pack_dir_clean() {
	set +u
	tar cjfh $3 \
	--exclude=CVS --exclude=.svn --exclude=.git --exclude=.pc \
	--exclude="~" --exclude=".#" \
	--exclude=".orig" --exclude=".rej" $4 $5 $6 $7 $8 $9 ${10} \
	-C $1 $2
	set -u
	}

	# Clean all global shell variables except for those needed by build scripts
	clean_env () {
	set +u
	local var_list
	local var
	var_list=`export\|grep "^declare -x"\|sed -e "s/declare -x //"\|cut -d"=" -f1`

	for var in $var_list ; do
	case $var in
	DEJAGNU\|\
	DISPLAY\|\
	HOME\|\
	LD_LIBRARY_PATH\|\
	LOGNAME\|\
	PATH\|\
	PWD\|\
	SHELL\|\
	SHLVL\|\
	TERM\|\
	USER\|\
	USERNAME\|\
	com.apple.*\|\
	XAUTHORITY)
	;;
	*)
	unset $var
	;;
	esac
	done

	export LANG=C
	set -u
	}

	# Start a new stack level to save variables
	# Must call this before saving any variables
	saveenv () {
	set +u
	# Force expr return 0 to avoid script fail
	stack_level=`expr $stack_level \+ 1 \|\| true`
	eval stack_list_$stack_level=
	set -u
	}

	# Save a variable to current stack level, and set new value to this var.
	# If a variable has been saved, won't save it. Just set new value
	# Must be called when stack_level > 0
	# $1: variable name
	# $2: new variable value
	saveenvvar () {
	set +u
	if [ $stack_level -le 0 ]; then
	error Must call saveenv before calling saveenvvar
	fi
	local varname="$1"
	local newval="$2"
	eval local oldval=\"\${$varname}\"
	eval local saved=\"\${level_saved_${stack_level}_${varname}}\"
	if [ "x$saved" = "x" ]; then
	# The variable wasn't saved in the level before. Save it
	eval local temp=\"\${stack_list_$stack_level}\"
	eval stack_list_$stack_level=\"$varname $temp\"
	eval save_level_${stack_level}_$varname=\"$oldval\"
	eval level_saved_${stack_level}_$varname="yes"
	eval level_preset_${stack_level}_${varname}=\"\${$varname+set}\"
	#echo Save $varname: \"$oldval\"
	fi
	eval export $varname=\"$newval\"
	#echo $varname set to \"$newval\"
	set -u
	}

	# Restore all variables that have been saved in current stack level
	restoreenv () {
	set +u
	if [ $stack_level -le 0 ]; then
	error "Trying to restore from an empty stack"
	fi

	eval local list=\"\${stack_list_$stack_level}\"
	local varname
	for varname in $list; do
	eval local varname_preset=\"\${level_preset_${stack_level}_${varname}}\"
	if [ "x$varname_preset" = "xset" ] ; then
	eval $varname=\"\${save_level_${stack_level}_$varname}\"
	else
	unset $varname
	fi
	eval level_saved_${stack_level}_$varname=
	# eval echo $varname restore to \\\"\"\${$varname}\"\\\"
	done
	# Force expr return 0 to avoid script fail
	stack_level=`expr $stack_level \- 1 \|\| true`
	set -u
	}

	prependenvvar() {
	set +u
	eval local oldval=\"\$$1\"
	saveenvvar "$1" "$2$oldval"
	set -u
	}

	prepend_path() {
	set +u
	eval local old_path="\"\$$1\""
	if [ x"$old_path" == "x" ]; then
	prependenvvar "$1" "$2"
	else
	prependenvvar "$1" "$2:"
	fi
	set -u
	}

	# Strip binary files as in "strip binary" form, for both native(linux/mac) and mingw.
	strip_binary() {
	set +e
	if [ $# -ne 2 ] ; then
	warning "strip_binary: Missing arguments"
	return 0
	fi
	local strip="$1"
	local bin="$2"

	file $bin \| grep -q -P "(\bELF\b)\|(\bPE\b)\|(\bPE32\b)"
	if [ $? -eq 0 ]; then
	$strip $bin 2>/dev/null \|\| true
	fi

	set -e
	}

	# Copy target libraries from each multilib directories.
	# Usage copy_multi_libs dst_prefix=... src_prefix=... target_gcc=...
	copy_multi_libs() {
	local -a multilibs
	local multilib
	local multi_dir
	local src_prefix
	local dst_prefix
	local src_dir
	local dst_dir
	local target_gcc

	for arg in "$@" ; do
	eval "${arg// /\\ }"
	done

	multilibs=( $("${target_gcc}" -print-multi-lib 2>/dev/null) )
	for multilib in "${multilibs[@]}" ; do
	multi_dir="${multilib%%;*}"
	src_dir=${src_prefix}/${multi_dir}
	dst_dir=${dst_prefix}/${multi_dir}
	cp -f "${src_dir}/libstdc++.a" "${dst_dir}/libstdc++_nano.a"
	cp -f "${src_dir}/libsupc++.a" "${dst_dir}/libsupc++_nano.a"
	cp -f "${src_dir}/libc.a" "${dst_dir}/libc_nano.a"
	cp -f "${src_dir}/libg.a" "${dst_dir}/libg_nano.a"
	cp -f "${src_dir}/librdimon.a" "${dst_dir}/librdimon_nano.a"
	cp -f "${src_dir}/nano.specs" "${dst_dir}/"
	cp -f "${src_dir}/rdimon.specs" "${dst_dir}/"
	cp -f "${src_dir}/nosys.specs" "${dst_dir}/"
	cp -f "${src_dir}/"*crt0.o "${dst_dir}/"
	done
	}

	# Clean up unnecessary global shell variables
	clean_env

	ROOT=`pwd`
	SRCDIR=$ROOT/src

	BUILDDIR_NATIVE=$ROOT/build-native
	BUILDDIR_MINGW=$ROOT/build-mingw
	INSTALLDIR_NATIVE=$ROOT/install-native
	INSTALLDIR_NATIVE_DOC=$ROOT/install-native/share/doc/gcc-arm-none-eabi
	INSTALLDIR_MINGW=$ROOT/install-mingw
	INSTALLDIR_MINGW_DOC=$ROOT/install-mingw/share/doc/gcc-arm-none-eabi

	PACKAGEDIR=$ROOT/pkg

	GMP_VER=6.1.0
	MPFR_VER=3.1.4
	MPC_VER=1.0.3
	ISL_VER=0.15
	EXPAT_VER=2.1.1
	LIBELF_VER=0.8.13
	LIBICONV_VER=1.14
	ZLIB_VER=1.2.8
	PYTHON_WIN_VER=2.7.13

	BINUTILS=binutils
	GCC=gcc
	NEWLIB=newlib
	NEWLIB_NANO=newlib
	GDB=gdb
	SAMPLES=samples
	INSTALLATION=installation
	BUILD_MANUAL=build-manual
	GMP=gmp-$GMP_VER
	MPFR=mpfr-$MPFR_VER
	MPC=mpc-$MPC_VER
	ISL=isl-$ISL_VER
	EXPAT=expat-$EXPAT_VER
	LIBELF=libelf-$LIBELF_VER
	LIBICONV=libiconv-$LIBICONV_VER
	ZLIB=zlib-$ZLIB_VER
	ENV_VAR_UPDATE=EnvVarUpdate
	PYTHON_WIN=python-$PYTHON_WIN_VER

	GMP_PACK=$GMP.tar.bz2
	MPFR_PACK=$MPFR.tar.bz2
	MPC_PACK=$MPC.tar.gz
	ISL_PACK=$ISL.tar.bz2
	EXPAT_PACK=$EXPAT.tar.bz2
	LIBELF_PACK=$LIBELF.tar.gz
	LIBICONV_PACK=$LIBICONV.tar.gz
	ZLIB_PACK=$ZLIB.tar.gz
	ENV_VAR_UPDATE_PACK=$ENV_VAR_UPDATE.7z
	PYTHON_WIN_PACK=$PYTHON_WIN.msi

	GMP_URL=https://gmplib.org/download/gmp/$GMP_PACK
	#MPFR_URL=http://www.mpfr.org/$MPFR/$MPFR_PACK
	MPFR_URL=https://ftp.gnu.org/gnu/mpfr/$MPFR_PACK
	MPC_URL=ftp://ftp.gnu.org/gnu/mpc/$MPC_PACK
	ISL_URL=http://isl.gforge.inria.fr/$ISL_PACK
	EXPAT_URL=https://downloads.sourceforge.net/project/expat/expat/$EXPAT_VER/$EXPAT_PACK
	LIBELF_URL=http://www.mr511.de/software/$LIBELF_PACK
	LIBICONV_URL=https://ftp.gnu.org/pub/gnu/libiconv/$LIBICONV_PACK
	ZLIB_URL=http://www.zlib.net/fossils/$ZLIB_PACK
	ENV_VAR_UPDATE_URL=http://nsis.sourceforge.net/mediawiki/images/a/ad/$ENV_VAR_UPDATE_PACK
	PYTHON_WIN_URL=https://www.python.org/ftp/python/$PYTHON_WIN_VER/$PYTHON_WIN_PACK

	# Set variables according to real environment to make this script can run
	# on Ubuntu and Mac OS X.
	uname_string=`uname \| sed 'y/LINUXDARWIN/linuxdarwin/'`
	host_arch=`uname -m \| sed 'y/XI/xi/'`
	if [ "x$uname_string" == "xlinux" ] ; then
	BUILD="$host_arch"-linux-gnu
	HOST_NATIVE="$host_arch"-linux-gnu
	READLINK=readlink
	JOBS=`grep ^processor /proc/cpuinfo\|wc -l`
	GCC_CONFIG_OPTS_LCPP="--with-host-libstdcxx=-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm"
	TAR=tar
	MD5="md5sum -b"
	PACKAGE_NAME_SUFFIX=linux
	elif [ "x$uname_string" == "xdarwin" ] ; then
	BUILD=x86_64-apple-darwin10
	HOST_NATIVE=x86_64-apple-darwin10
	READLINK=greadlink
	# Disable parallel build for mac as we will randomly run into "Permission denied" issue.
	JOBS=`sysctl -n hw.ncpu`
	#JOBS=1
	GCC_CONFIG_OPTS_LCPP="--with-host-libstdcxx=-static-libgcc -Wl,-lstdc++ -lm"
	TAR=gnutar
	MD5="md5 -r"
	PACKAGE_NAME_SUFFIX=mac
	else
	error "Unsupported build system : $uname_string"
	fi

	PREREQS="GMP MPFR MPC ISL EXPAT LIBELF LIBICONV ZLIB"
	WIN_PREREQS="ENV_VAR_UPDATE PYTHON_WIN"
	if [ "x$BUILD" != "xx86_64-apple-darwin10" ]; then
	PREREQS="$PREREQS $WIN_PREREQS"
	fi

	SCRIPT=$(basename $0)

	# This is a build script, go on
	if [ "${SCRIPT%%-*}" = "build" ]; then

	stack_level=0

	RELEASEDATE=`date +%Y%m%d`
	release_year=${RELEASEDATE:0:4}
	release_month=${RELEASEDATE:4:2}
	case $release_month in
	01\|02\|03)
	RELEASEVER=${release_year}-q1-update
	;;
	04\|05\|06)
	RELEASEVER=${release_year}-q2-update
	;;
	07\|08\|09)
	RELEASEVER=${release_year}-q3-update
	;;
	10\|11\|12)
	RELEASEVER=${release_year}-q4-major
	;;
	esac

	RELEASE_FILE=release.txt
	README_FILE=readme.txt
	LICENSE_FILE=license.txt
	SAMPLES_DOS_FILES=$SAMPLES/readme.txt
	BUILD_MANUAL_FILE=How-to-build-toolchain.pdf
	GCC_VER=`cat $SRCDIR/$GCC/gcc/BASE-VER`
	GCC_VER_NAME=`echo $GCC_VER \| cut -d'.' -f1`
	# sed -r doesn't exist in Darwin
	if [[ $(uname -s) == "Darwin" ]]
	then
	SEDOPTION='-E'
	else
	SEDOPTION='-r'
	fi
	GCC_VER_SHORT=$GCC_VER_NAME
	HOST_MINGW=i686-w64-mingw32
	HOST_MINGW_TOOL=i686-w64-mingw32
	TARGET=arm-none-eabi
	ENV_CFLAGS=
	ENV_CPPFLAGS=
	ENV_LDFLAGS=
	BINUTILS_CONFIG_OPTS=
	GCC_CONFIG_OPTS=
	GDB_CONFIG_OPTS=
	NEWLIB_CONFIG_OPTS=


	PKGROOTNAME="GNU Tools for Arm Embedded Processors"
	PKGVERSION="$PKGROOTNAME $GCC_VER_NAME-$RELEASEVER"
	BUGURL="https://developer.arm.com/open-source/gnu-toolchain/gnu-rm"

	OBJ_SUFFIX_MINGW=$TARGET-$RELEASEDATE-$HOST_MINGW
	OBJ_SUFFIX_NATIVE=$TARGET-$RELEASEDATE-$HOST_NATIVE
	PACKAGE_NAME=gcc-$TARGET-$GCC_VER_NAME-$RELEASEVER
	PACKAGE_NAME_NATIVE=$PACKAGE_NAME-$PACKAGE_NAME_SUFFIX
	PACKAGE_NAME_MINGW=$PACKAGE_NAME-win32
	INSTALL_PACKAGE_NAME=gcc-$TARGET-$GCC_VER_NAME-$RELEASEVER
	INSTALLBASE="GNU Tools Arm Embedded"
	APPNAME="$PKGVERSION $GCC_VER_SHORT $release_year"

	fi # not a build script