build/tools/make-standalone-toolchain.sh - platform/ndk - Git at Google

 # Copyright (C) 2010 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #

 # Create a standalone toolchain package for Android.

 . `dirname $0`/prebuilt-common.sh

 PROGRAM_PARAMETERS=""
 PROGRAM_DESCRIPTION=\
 "Generate a customized Android toolchain installation that includes
 a working sysroot. The result is something that can more easily be
 used as a standalone cross-compiler, e.g. to run configure and
 make scripts."

 # For now, this is the only toolchain that works reliably.
 TOOLCHAIN_NAME=
 register_var_option "--toolchain=<name>" TOOLCHAIN_NAME "Specify toolchain name"

 LLVM_VERSION=
 register_var_option "--llvm-version=<ver>" LLVM_VERSION "Specify LLVM version"

 ARCH=
 register_option "--arch=<name>" do_arch "Specify target architecture" "arm"
 do_arch () { ARCH=$1; }

 NDK_DIR=`dirname $0`
 NDK_DIR=`dirname $NDK_DIR`
 NDK_DIR=`dirname $NDK_DIR`
 register_var_option "--ndk-dir=<path>" NDK_DIR "Take source files from NDK at <path>"

 # Create 32-bit host toolchain by default
 SYSTEM=$HOST_TAG32
 register_var_option "--system=<name>" SYSTEM "Specify host system"

 PACKAGE_DIR=/tmp/ndk-$USER
 register_var_option "--package-dir=<path>" PACKAGE_DIR "Place package file in <path>"

 INSTALL_DIR=
 register_var_option "--install-dir=<path>" INSTALL_DIR "Don't create package, install files to <path> instead."

 PLATFORM=
 register_option "--platform=<name>" do_platform "Specify target Android platform/API level." "android-3"
 do_platform () { PLATFORM=$1; }

 extract_parameters "$@"

 # Check NDK_DIR
 if [ ! -d "$NDK_DIR/build/core" ] ; then
     echo "Invalid source NDK directory: $NDK_DIR"
     echo "Please use --ndk-dir=<path> to specify the path of an installed NDK."
     exit 1
 fi

 # Check ARCH
 if [ -z "$ARCH" ]; then
     case $TOOLCHAIN_NAME in
         arm-*)
             ARCH=arm
             ;;
         x86-*)
             ARCH=x86
             ;;
         mips*)
             ARCH=mips
             ;;
         *)
             ARCH=arm
             ;;
     esac
     log "Auto-config: --arch=$ARCH"
 fi

 # Check toolchain name
 if [ -z "$TOOLCHAIN_NAME" ]; then
     TOOLCHAIN_NAME=$(get_default_toolchain_name_for_arch $ARCH)
     echo "Auto-config: --toolchain=$TOOLCHAIN_NAME"
 fi

 # Detect LLVM version from toolchain name
 if [ -z "$LLVM_VERSION" ]; then
     LLVM_VERSION_EXTRACT=$(echo "$TOOLCHAIN_NAME" | grep 'clang[0-9]\.[0-9]$' | sed -e 's/.*-clang//')
     if [ -n "$LLVM_VERSION_EXTRACT" ]; then
         TOOLCHAIN_NAME=$(get_default_toolchain_name_for_arch $ARCH)
         LLVM_VERSION=$LLVM_VERSION_EXTRACT
         echo "Auto-config: --toolchain=$TOOLCHAIN_NAME, --llvm-version=$LLVM_VERSION"
     fi
 fi

 # Check PLATFORM
 if [ -z "$PLATFORM" ]; then
     case $ARCH in
         arm) PLATFORM=android-3
             ;;
         x86)
             PLATFORM=android-9
             ;;
         mips)
             # Set it to android-9
             PLATFORM=android-9
             ;;
     esac
     log "Auto-config: --platform=$PLATFORM"
 fi

 if [ ! -d "$NDK_DIR/platforms/$PLATFORM" ] ; then
     echo "Invalid platform name: $PLATFORM"
     echo "Please use --platform=<name> with one of:" `(cd "$NDK_DIR/platforms" && ls)`
     exit 1
 fi

 # Check toolchain name
 TOOLCHAIN_PATH="$NDK_DIR/toolchains/$TOOLCHAIN_NAME"
 if [ ! -d "$TOOLCHAIN_PATH" ] ; then
     echo "Invalid toolchain name: $TOOLCHAIN_NAME"
     echo "Please use --toolchain=<name> with the name of a toolchain supported by the source NDK."
     echo "Try one of: " `(cd "$NDK_DIR/toolchains" && ls)`
     exit 1
 fi

 # Extract architecture from platform name
 parse_toolchain_name $TOOLCHAIN_NAME

 # Check that there are any platform files for it!
 (cd $NDK_DIR/platforms && ls -d */arch-${ARCH} >/dev/null 2>&1 )
 if [ $? != 0 ] ; then
     echo "Platform $PLATFORM doesn't have any files for this architecture: $ARCH"
     echo "Either use --platform=<name> or --toolchain=<name> to select a different"
     echo "platform or arch-dependent toolchain name (respectively)!"
     exit 1
 fi

 # Compute source sysroot
 SRC_SYSROOT="$NDK_DIR/platforms/$PLATFORM/arch-$ARCH"
 if [ ! -d "$SRC_SYSROOT" ] ; then
     echo "No platform files ($PLATFORM) for this architecture: $ARCH"
     exit 1
 fi

 # Check that we have any prebuilts GCC toolchain here
 if [ ! -d "$TOOLCHAIN_PATH/prebuilt" ] ; then
     echo "Toolchain is missing prebuilt files: $TOOLCHAIN_NAME"
     echo "You must point to a valid NDK release package!"
     exit 1
 fi

 if [ ! -d "$TOOLCHAIN_PATH/prebuilt/$SYSTEM" ] ; then
     echo "Host system '$SYSTEM' is not supported by the source NDK!"
     echo "Try --system=<name> with one of: " `(cd $TOOLCHAIN_PATH/prebuilt && ls) | grep -v gdbserver`
     exit 1
 fi

 TOOLCHAIN_PATH="$TOOLCHAIN_PATH/prebuilt/$SYSTEM"
 TOOLCHAIN_GCC=$TOOLCHAIN_PATH/bin/$ABI_CONFIGURE_TARGET-gcc

 if [ ! -f "$TOOLCHAIN_GCC" ] ; then
     echo "Toolchain $TOOLCHAIN_GCC is missing!"
     exit 1
 fi

 if [ -n "$LLVM_VERSION" ]; then
     LLVM_TOOLCHAIN_PATH="$NDK_DIR/toolchains/llvm-$LLVM_VERSION"
     # Check that we have any prebuilts LLVM toolchain here
     if [ ! -d "$LLVM_TOOLCHAIN_PATH/prebuilt" ] ; then
         echo "LLVM Toolchain is missing prebuilt files"
         echo "You must point to a valid NDK release package!"
         exit 1
     fi

     if [ ! -d "$LLVM_TOOLCHAIN_PATH/prebuilt/$SYSTEM" ] ; then
         echo "Host system '$SYSTEM' is not supported by the source NDK!"
         echo "Try --system=<name> with one of: " `(cd $LLVM_TOOLCHAIN_PATH/prebuilt && ls)`
         exit 1
     fi
     LLVM_TOOLCHAIN_PATH="$LLVM_TOOLCHAIN_PATH/prebuilt/$SYSTEM"
 fi

 # Get GCC_BASE_VERSION.  Note that GCC_BASE_VERSION may be slightly different from GCC_VERSION.
 # eg. In gcc4.6 GCC_BASE_VERSION is "4.6.x-google"
 LIBGCC_PATH=`$TOOLCHAIN_GCC -print-libgcc-file-name`
 LIBGCC_BASE_PATH=${LIBGCC_PATH%/*}         # base path of libgcc.a
 GCC_BASE_VERSION=${LIBGCC_BASE_PATH##*/}   # stuff after the last /

 # Create temporary directory
 TMPDIR=$NDK_TMPDIR/standalone/$TOOLCHAIN_NAME

 dump "Copying prebuilt binaries..."
 # Now copy the GCC toolchain prebuilt binaries
 run copy_directory "$TOOLCHAIN_PATH" "$TMPDIR"

 if [ -n "$LLVM_VERSION" ]; then
   # Copy the clang/llvm toolchain prebuilt binaries
   run copy_directory "$LLVM_TOOLCHAIN_PATH" "$TMPDIR"

   # Move clang and clang++ to clang${LLVM_VERSION} and clang${LLVM_VERSION}++,
   # then create scripts linking them with predefined -target flag.  This is to
   # make clang/++ easier drop-in replacement for gcc/++ in NDK standalone mode.
   # Note that the file name of "clang" isn't important, and the trailing
   # "++" tells clang to compile in C++ mode
   LLVM_TARGET=
   case "$ARCH" in
       arm) # NOte: -target may change by clang based on the
            #        presence of subsequent -march=armv7-a and/or -mthumb
           LLVM_TARGET=armv5te-none-linux-androideabi
           ;;
       x86)
           LLVM_TARGET=i686-none-linux-android
           ;;
       mips)
           LLVM_TARGET=mipsel-none-linux-android
           ;;
       *)
         dump "ERROR: Unsupported NDK architecture!"
   esac
   # Need to remove '.' from LLVM_VERSION when constructing new clang name,
   # otherwise clang3.1++ may still compile *.c code as C, not C++, which
   # is not consistent with g++
   LLVM_VERSION_WITHOUT_DOT=$(echo "$LLVM_VERSION" | sed -e "s!\.!!")
   mv "$TMPDIR/bin/clang${HOST_EXE}" "$TMPDIR/bin/clang${LLVM_VERSION_WITHOUT_DOT}${HOST_EXE}"
   if [ -h "$TMPDIR/bin/clang++${HOST_EXE}" ] ; then
     ## clang++ is a link to clang.  Remove it and reconstruct
     rm "$TMPDIR/bin/clang++${HOST_EXE}"
     ln -s "clang${LLVM_VERSION_WITHOUT_DOT}${HOST_EXE}" "$TMPDIR/bin/clang${LLVM_VERSION_WITHOUT_DOT}++${HOST_EXE}"
   else
     mv "$TMPDIR/bin/clang++${HOST_EXE}" "$TMPDIR/bin/clang$LLVM_VERSION_WITHOUT_DOT++${HOST_EXE}"
   fi

   cat > "$TMPDIR/bin/clang" <<EOF
 if [ "\$1" != "-cc1" ]; then
     \`dirname \$0\`/clang$LLVM_VERSION_WITHOUT_DOT -target $LLVM_TARGET "\$@"
 else
     # target/triple already spelled out.
     \`dirname \$0\`/clang$LLVM_VERSION_WITHOUT_DOT "\$@"
 fi
 EOF
   cat > "$TMPDIR/bin/clang++" <<EOF
 if [ "\$1" != "-cc1" ]; then
     \`dirname \$0\`/clang$LLVM_VERSION_WITHOUT_DOT++ -target $LLVM_TARGET "\$@"
 else
     # target/triple already spelled out.
     \`dirname \$0\`/clang$LLVM_VERSION_WITHOUT_DOT++ "\$@"
 fi
 EOF
   chmod 0755 "$TMPDIR/bin/clang" "$TMPDIR/bin/clang++"

   if [ -n "$HOST_EXE" ] ; then
     cat > "$TMPDIR/bin/clang.cmd" <<EOF
 @echo off
 if "%1" == "-cc1" goto :L
 %~dp0\\clang${LLVM_VERSION_WITHOUT_DOT}${HOST_EXE} -target $LLVM_TARGET %*
 if ERRORLEVEL 1 exit /b 1
 goto :done
 :L
 rem target/triple already spelled out.
 %~dp0\\clang${LLVM_VERSION_WITHOUT_DOT}${HOST_EXE} %*
 if ERRORLEVEL 1 exit /b 1
 :done
 EOF
     cat > "$TMPDIR/bin/clang++.cmd" <<EOF
 @echo off
 if "%1" == "-cc1" goto :L
 %~dp0\\clang${LLVM_VERSION_WITHOUT_DOT}++${HOST_EXE} -target $LLVM_TARGET %*
 if ERRORLEVEL 1 exit /b 1
 goto :done
 :L
 rem target/triple already spelled out.
 %~dp0\\clang${LLVM_VERSION_WITHOUT_DOT}++${HOST_EXE} %*
 if ERRORLEVEL 1 exit /b 1
 :done
 EOF
   fi
 fi

 dump "Copying sysroot headers and libraries..."
 # Copy the sysroot under $TMPDIR/sysroot. The toolchain was built to
 # expect the sysroot files to be placed there!
 run copy_directory_nolinks "$SRC_SYSROOT" "$TMPDIR/sysroot"

 dump "Copying libstdc++ headers and libraries..."

 GNUSTL_DIR=$NDK_DIR/$GNUSTL_SUBDIR/$GCC_VERSION
 GNUSTL_LIBS=$GNUSTL_DIR/libs

 ABI_STL="$TMPDIR/$ABI_CONFIGURE_TARGET"
 ABI_STL_INCLUDE="$TMPDIR/include/c++/$GCC_BASE_VERSION"

 copy_directory "$GNUSTL_DIR/include" "$ABI_STL_INCLUDE"
 ABI_STL_INCLUDE_TARGET="$ABI_STL_INCLUDE/$ABI_CONFIGURE_TARGET"
 mkdir -p "$ABI_STL_INCLUDE_TARGET"
 fail_panic "Can't create directory: $ABI_STL_INCLUDE_TARGET"
 case "$ARCH" in
     arm)
         copy_directory "$GNUSTL_LIBS/armeabi/include/bits" "$ABI_STL_INCLUDE_TARGET/bits"
         copy_file_list "$GNUSTL_LIBS/armeabi" "$ABI_STL/lib" "libgnustl_shared.so"
         copy_file_list "$GNUSTL_LIBS/armeabi" "$ABI_STL/lib" "libsupc++.a"
         cp -p "$GNUSTL_LIBS/armeabi/libgnustl_static.a" "$ABI_STL/lib/libstdc++.a"

         copy_directory "$GNUSTL_LIBS/armeabi/include/bits" "$ABI_STL_INCLUDE_TARGET/thumb/bits"
         copy_file_list "$GNUSTL_LIBS/armeabi/thumb" "$ABI_STL/lib/thumb" "libgnustl_shared.so"
         copy_file_list "$GNUSTL_LIBS/armeabi/thumb" "$ABI_STL/lib/thumb" "libsupc++.a"
         cp -p "$GNUSTL_LIBS/armeabi/thumb/libgnustl_static.a" "$ABI_STL/lib/thumb/libstdc++.a"

         copy_directory "$GNUSTL_LIBS/armeabi-v7a/include/bits" "$ABI_STL_INCLUDE_TARGET/armv7-a/bits"
         copy_file_list "$GNUSTL_LIBS/armeabi-v7a" "$ABI_STL/lib/armv7-a" "libgnustl_shared.so"
         copy_file_list "$GNUSTL_LIBS/armeabi-v7a" "$ABI_STL/lib/armv7-a" "libsupc++.a"
         cp -p "$GNUSTL_LIBS/armeabi-v7a/libgnustl_static.a" "$ABI_STL/lib/armv7-a/libstdc++.a"

         copy_directory "$GNUSTL_LIBS/armeabi-v7a/include/bits" "$ABI_STL_INCLUDE_TARGET/armv7-a/thumb/bits"
         copy_file_list "$GNUSTL_LIBS/armeabi-v7a/thumb" "$ABI_STL/lib/armv7-a/thumb/" "libgnustl_shared.so"
         copy_file_list "$GNUSTL_LIBS/armeabi-v7a/thumb" "$ABI_STL/lib/armv7-a/thumb/" "libsupc++.a"
         cp -p "$GNUSTL_LIBS/armeabi-v7a/thumb/libgnustl_static.a" "$ABI_STL/lib/armv7-a//thumb/libstdc++.a"
         ;;
     x86)
         copy_directory "$GNUSTL_LIBS/x86/include/bits" "$ABI_STL_INCLUDE_TARGET/bits"
         copy_file_list "$GNUSTL_LIBS/x86" "$ABI_STL/lib" "libgnustl_shared.so"
         copy_file_list "$GNUSTL_LIBS/x86" "$ABI_STL/lib" "libsupc++.a"
         cp -p "$GNUSTL_LIBS/x86/libgnustl_static.a" "$ABI_STL/lib/libstdc++.a"
         ;;
     mips)
         copy_directory "$GNUSTL_LIBS/mips/include/bits" "$ABI_STL_INCLUDE_TARGET/bits"
         copy_file_list "$GNUSTL_LIBS/mips" "$ABI_STL/lib" "libgnustl_shared.so"
         copy_file_list "$GNUSTL_LIBS/mips" "$ABI_STL/lib" "libsupc++.a"
         cp -p "$GNUSTL_LIBS/mips/libgnustl_static.a" "$ABI_STL/lib/libstdc++.a"
         ;;
     *)
         dump "ERROR: Unsupported NDK architecture!"
 esac

 # Install or Package
 if [ -n "$INSTALL_DIR" ] ; then
     dump "Copying files to: $INSTALL_DIR"
     run copy_directory "$TMPDIR" "$INSTALL_DIR"
 else
     PACKAGE_FILE="$PACKAGE_DIR/$TOOLCHAIN_NAME.tar.bz2"
     dump "Creating package file: $PACKAGE_FILE"
     pack_archive "$PACKAGE_FILE" "`dirname $TMPDIR`" "$TOOLCHAIN_NAME"
     fail_panic "Could not create tarball from $TMPDIR"
 fi
 dump "Cleaning up..."
 run rm -rf $TMPDIR

 dump "Done."
	# Copyright (C) 2010 The Android Open Source Project
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.
	#

	# Create a standalone toolchain package for Android.

	. `dirname $0`/prebuilt-common.sh

	PROGRAM_PARAMETERS=""
	PROGRAM_DESCRIPTION=\
	"Generate a customized Android toolchain installation that includes
	a working sysroot. The result is something that can more easily be
	used as a standalone cross-compiler, e.g. to run configure and
	make scripts."

	# For now, this is the only toolchain that works reliably.
	TOOLCHAIN_NAME=
	register_var_option "--toolchain=<name>" TOOLCHAIN_NAME "Specify toolchain name"

	LLVM_VERSION=
	register_var_option "--llvm-version=<ver>" LLVM_VERSION "Specify LLVM version"

	ARCH=
	register_option "--arch=<name>" do_arch "Specify target architecture" "arm"
	do_arch () { ARCH=$1; }

	NDK_DIR=`dirname $0`
	NDK_DIR=`dirname $NDK_DIR`
	NDK_DIR=`dirname $NDK_DIR`
	register_var_option "--ndk-dir=<path>" NDK_DIR "Take source files from NDK at <path>"

	# Create 32-bit host toolchain by default
	SYSTEM=$HOST_TAG32
	register_var_option "--system=<name>" SYSTEM "Specify host system"

	PACKAGE_DIR=/tmp/ndk-$USER
	register_var_option "--package-dir=<path>" PACKAGE_DIR "Place package file in <path>"

	INSTALL_DIR=
	register_var_option "--install-dir=<path>" INSTALL_DIR "Don't create package, install files to <path> instead."

	PLATFORM=
	register_option "--platform=<name>" do_platform "Specify target Android platform/API level." "android-3"
	do_platform () { PLATFORM=$1; }

	extract_parameters "$@"

	# Check NDK_DIR
	if [ ! -d "$NDK_DIR/build/core" ] ; then
	echo "Invalid source NDK directory: $NDK_DIR"
	echo "Please use --ndk-dir=<path> to specify the path of an installed NDK."
	exit 1
	fi

	# Check ARCH
	if [ -z "$ARCH" ]; then
	case $TOOLCHAIN_NAME in
	arm-*)
	ARCH=arm
	;;
	x86-*)
	ARCH=x86
	;;
	mips*)
	ARCH=mips
	;;
	*)
	ARCH=arm
	;;
	esac
	log "Auto-config: --arch=$ARCH"
	fi

	# Check toolchain name
	if [ -z "$TOOLCHAIN_NAME" ]; then
	TOOLCHAIN_NAME=$(get_default_toolchain_name_for_arch $ARCH)
	echo "Auto-config: --toolchain=$TOOLCHAIN_NAME"
	fi

	# Detect LLVM version from toolchain name
	if [ -z "$LLVM_VERSION" ]; then
	LLVM_VERSION_EXTRACT=$(echo "$TOOLCHAIN_NAME" \| grep 'clang[0-9]\.[0-9]$' \| sed -e 's/.*-clang//')
	if [ -n "$LLVM_VERSION_EXTRACT" ]; then
	TOOLCHAIN_NAME=$(get_default_toolchain_name_for_arch $ARCH)
	LLVM_VERSION=$LLVM_VERSION_EXTRACT
	echo "Auto-config: --toolchain=$TOOLCHAIN_NAME, --llvm-version=$LLVM_VERSION"
	fi
	fi

	# Check PLATFORM
	if [ -z "$PLATFORM" ]; then
	case $ARCH in
	arm) PLATFORM=android-3
	;;
	x86)
	PLATFORM=android-9
	;;
	mips)
	# Set it to android-9
	PLATFORM=android-9
	;;
	esac
	log "Auto-config: --platform=$PLATFORM"
	fi

	if [ ! -d "$NDK_DIR/platforms/$PLATFORM" ] ; then
	echo "Invalid platform name: $PLATFORM"
	echo "Please use --platform=<name> with one of:" `(cd "$NDK_DIR/platforms" && ls)`
	exit 1
	fi

	# Check toolchain name
	TOOLCHAIN_PATH="$NDK_DIR/toolchains/$TOOLCHAIN_NAME"
	if [ ! -d "$TOOLCHAIN_PATH" ] ; then
	echo "Invalid toolchain name: $TOOLCHAIN_NAME"
	echo "Please use --toolchain=<name> with the name of a toolchain supported by the source NDK."
	echo "Try one of: " `(cd "$NDK_DIR/toolchains" && ls)`
	exit 1
	fi

	# Extract architecture from platform name
	parse_toolchain_name $TOOLCHAIN_NAME

	# Check that there are any platform files for it!
	(cd $NDK_DIR/platforms && ls -d */arch-${ARCH} >/dev/null 2>&1 )
	if [ $? != 0 ] ; then
	echo "Platform $PLATFORM doesn't have any files for this architecture: $ARCH"
	echo "Either use --platform=<name> or --toolchain=<name> to select a different"
	echo "platform or arch-dependent toolchain name (respectively)!"
	exit 1
	fi

	# Compute source sysroot
	SRC_SYSROOT="$NDK_DIR/platforms/$PLATFORM/arch-$ARCH"
	if [ ! -d "$SRC_SYSROOT" ] ; then
	echo "No platform files ($PLATFORM) for this architecture: $ARCH"
	exit 1
	fi

	# Check that we have any prebuilts GCC toolchain here
	if [ ! -d "$TOOLCHAIN_PATH/prebuilt" ] ; then
	echo "Toolchain is missing prebuilt files: $TOOLCHAIN_NAME"
	echo "You must point to a valid NDK release package!"
	exit 1
	fi

	if [ ! -d "$TOOLCHAIN_PATH/prebuilt/$SYSTEM" ] ; then
	echo "Host system '$SYSTEM' is not supported by the source NDK!"
	echo "Try --system=<name> with one of: " `(cd $TOOLCHAIN_PATH/prebuilt && ls) \| grep -v gdbserver`
	exit 1
	fi

	TOOLCHAIN_PATH="$TOOLCHAIN_PATH/prebuilt/$SYSTEM"
	TOOLCHAIN_GCC=$TOOLCHAIN_PATH/bin/$ABI_CONFIGURE_TARGET-gcc

	if [ ! -f "$TOOLCHAIN_GCC" ] ; then
	echo "Toolchain $TOOLCHAIN_GCC is missing!"
	exit 1
	fi

	if [ -n "$LLVM_VERSION" ]; then
	LLVM_TOOLCHAIN_PATH="$NDK_DIR/toolchains/llvm-$LLVM_VERSION"
	# Check that we have any prebuilts LLVM toolchain here
	if [ ! -d "$LLVM_TOOLCHAIN_PATH/prebuilt" ] ; then
	echo "LLVM Toolchain is missing prebuilt files"
	echo "You must point to a valid NDK release package!"
	exit 1
	fi

	if [ ! -d "$LLVM_TOOLCHAIN_PATH/prebuilt/$SYSTEM" ] ; then
	echo "Host system '$SYSTEM' is not supported by the source NDK!"
	echo "Try --system=<name> with one of: " `(cd $LLVM_TOOLCHAIN_PATH/prebuilt && ls)`
	exit 1
	fi
	LLVM_TOOLCHAIN_PATH="$LLVM_TOOLCHAIN_PATH/prebuilt/$SYSTEM"
	fi

	# Get GCC_BASE_VERSION. Note that GCC_BASE_VERSION may be slightly different from GCC_VERSION.
	# eg. In gcc4.6 GCC_BASE_VERSION is "4.6.x-google"
	LIBGCC_PATH=`$TOOLCHAIN_GCC -print-libgcc-file-name`
	LIBGCC_BASE_PATH=${LIBGCC_PATH%/*} # base path of libgcc.a
	GCC_BASE_VERSION=${LIBGCC_BASE_PATH##*/} # stuff after the last /

	# Create temporary directory
	TMPDIR=$NDK_TMPDIR/standalone/$TOOLCHAIN_NAME

	dump "Copying prebuilt binaries..."
	# Now copy the GCC toolchain prebuilt binaries
	run copy_directory "$TOOLCHAIN_PATH" "$TMPDIR"

	if [ -n "$LLVM_VERSION" ]; then
	# Copy the clang/llvm toolchain prebuilt binaries
	run copy_directory "$LLVM_TOOLCHAIN_PATH" "$TMPDIR"

	# Move clang and clang++ to clang${LLVM_VERSION} and clang${LLVM_VERSION}++,
	# then create scripts linking them with predefined -target flag. This is to
	# make clang/++ easier drop-in replacement for gcc/++ in NDK standalone mode.
	# Note that the file name of "clang" isn't important, and the trailing
	# "++" tells clang to compile in C++ mode
	LLVM_TARGET=
	case "$ARCH" in
	arm) # NOte: -target may change by clang based on the
	# presence of subsequent -march=armv7-a and/or -mthumb
	LLVM_TARGET=armv5te-none-linux-androideabi
	;;
	x86)
	LLVM_TARGET=i686-none-linux-android
	;;
	mips)
	LLVM_TARGET=mipsel-none-linux-android
	;;
	*)
	dump "ERROR: Unsupported NDK architecture!"
	esac
	# Need to remove '.' from LLVM_VERSION when constructing new clang name,
	# otherwise clang3.1++ may still compile *.c code as C, not C++, which
	# is not consistent with g++
	LLVM_VERSION_WITHOUT_DOT=$(echo "$LLVM_VERSION" \| sed -e "s!\.!!")
	mv "$TMPDIR/bin/clang${HOST_EXE}" "$TMPDIR/bin/clang${LLVM_VERSION_WITHOUT_DOT}${HOST_EXE}"
	if [ -h "$TMPDIR/bin/clang++${HOST_EXE}" ] ; then
	## clang++ is a link to clang. Remove it and reconstruct
	rm "$TMPDIR/bin/clang++${HOST_EXE}"
	ln -s "clang${LLVM_VERSION_WITHOUT_DOT}${HOST_EXE}" "$TMPDIR/bin/clang${LLVM_VERSION_WITHOUT_DOT}++${HOST_EXE}"
	else
	mv "$TMPDIR/bin/clang++${HOST_EXE}" "$TMPDIR/bin/clang$LLVM_VERSION_WITHOUT_DOT++${HOST_EXE}"
	fi

	cat > "$TMPDIR/bin/clang" <<EOF
	if [ "\$1" != "-cc1" ]; then
	\`dirname \$0\`/clang$LLVM_VERSION_WITHOUT_DOT -target $LLVM_TARGET "\$@"
	else
	# target/triple already spelled out.
	\`dirname \$0\`/clang$LLVM_VERSION_WITHOUT_DOT "\$@"
	fi
	EOF
	cat > "$TMPDIR/bin/clang++" <<EOF
	if [ "\$1" != "-cc1" ]; then
	\`dirname \$0\`/clang$LLVM_VERSION_WITHOUT_DOT++ -target $LLVM_TARGET "\$@"
	else
	# target/triple already spelled out.
	\`dirname \$0\`/clang$LLVM_VERSION_WITHOUT_DOT++ "\$@"
	fi
	EOF
	chmod 0755 "$TMPDIR/bin/clang" "$TMPDIR/bin/clang++"

	if [ -n "$HOST_EXE" ] ; then
	cat > "$TMPDIR/bin/clang.cmd" <<EOF
	@echo off
	if "%1" == "-cc1" goto :L
	%~dp0\\clang${LLVM_VERSION_WITHOUT_DOT}${HOST_EXE} -target $LLVM_TARGET %*
	if ERRORLEVEL 1 exit /b 1
	goto :done
	:L
	rem target/triple already spelled out.
	%~dp0\\clang${LLVM_VERSION_WITHOUT_DOT}${HOST_EXE} %*
	if ERRORLEVEL 1 exit /b 1
	:done
	EOF
	cat > "$TMPDIR/bin/clang++.cmd" <<EOF
	@echo off
	if "%1" == "-cc1" goto :L
	%~dp0\\clang${LLVM_VERSION_WITHOUT_DOT}++${HOST_EXE} -target $LLVM_TARGET %*
	if ERRORLEVEL 1 exit /b 1
	goto :done
	:L
	rem target/triple already spelled out.
	%~dp0\\clang${LLVM_VERSION_WITHOUT_DOT}++${HOST_EXE} %*
	if ERRORLEVEL 1 exit /b 1
	:done
	EOF
	fi
	fi

	dump "Copying sysroot headers and libraries..."
	# Copy the sysroot under $TMPDIR/sysroot. The toolchain was built to
	# expect the sysroot files to be placed there!
	run copy_directory_nolinks "$SRC_SYSROOT" "$TMPDIR/sysroot"

	dump "Copying libstdc++ headers and libraries..."

	GNUSTL_DIR=$NDK_DIR/$GNUSTL_SUBDIR/$GCC_VERSION
	GNUSTL_LIBS=$GNUSTL_DIR/libs

	ABI_STL="$TMPDIR/$ABI_CONFIGURE_TARGET"
	ABI_STL_INCLUDE="$TMPDIR/include/c++/$GCC_BASE_VERSION"

	copy_directory "$GNUSTL_DIR/include" "$ABI_STL_INCLUDE"
	ABI_STL_INCLUDE_TARGET="$ABI_STL_INCLUDE/$ABI_CONFIGURE_TARGET"
	mkdir -p "$ABI_STL_INCLUDE_TARGET"
	fail_panic "Can't create directory: $ABI_STL_INCLUDE_TARGET"
	case "$ARCH" in
	arm)
	copy_directory "$GNUSTL_LIBS/armeabi/include/bits" "$ABI_STL_INCLUDE_TARGET/bits"
	copy_file_list "$GNUSTL_LIBS/armeabi" "$ABI_STL/lib" "libgnustl_shared.so"
	copy_file_list "$GNUSTL_LIBS/armeabi" "$ABI_STL/lib" "libsupc++.a"
	cp -p "$GNUSTL_LIBS/armeabi/libgnustl_static.a" "$ABI_STL/lib/libstdc++.a"

	copy_directory "$GNUSTL_LIBS/armeabi/include/bits" "$ABI_STL_INCLUDE_TARGET/thumb/bits"
	copy_file_list "$GNUSTL_LIBS/armeabi/thumb" "$ABI_STL/lib/thumb" "libgnustl_shared.so"
	copy_file_list "$GNUSTL_LIBS/armeabi/thumb" "$ABI_STL/lib/thumb" "libsupc++.a"
	cp -p "$GNUSTL_LIBS/armeabi/thumb/libgnustl_static.a" "$ABI_STL/lib/thumb/libstdc++.a"

	copy_directory "$GNUSTL_LIBS/armeabi-v7a/include/bits" "$ABI_STL_INCLUDE_TARGET/armv7-a/bits"
	copy_file_list "$GNUSTL_LIBS/armeabi-v7a" "$ABI_STL/lib/armv7-a" "libgnustl_shared.so"
	copy_file_list "$GNUSTL_LIBS/armeabi-v7a" "$ABI_STL/lib/armv7-a" "libsupc++.a"
	cp -p "$GNUSTL_LIBS/armeabi-v7a/libgnustl_static.a" "$ABI_STL/lib/armv7-a/libstdc++.a"

	copy_directory "$GNUSTL_LIBS/armeabi-v7a/include/bits" "$ABI_STL_INCLUDE_TARGET/armv7-a/thumb/bits"
	copy_file_list "$GNUSTL_LIBS/armeabi-v7a/thumb" "$ABI_STL/lib/armv7-a/thumb/" "libgnustl_shared.so"
	copy_file_list "$GNUSTL_LIBS/armeabi-v7a/thumb" "$ABI_STL/lib/armv7-a/thumb/" "libsupc++.a"
	cp -p "$GNUSTL_LIBS/armeabi-v7a/thumb/libgnustl_static.a" "$ABI_STL/lib/armv7-a//thumb/libstdc++.a"
	;;
	x86)
	copy_directory "$GNUSTL_LIBS/x86/include/bits" "$ABI_STL_INCLUDE_TARGET/bits"
	copy_file_list "$GNUSTL_LIBS/x86" "$ABI_STL/lib" "libgnustl_shared.so"
	copy_file_list "$GNUSTL_LIBS/x86" "$ABI_STL/lib" "libsupc++.a"
	cp -p "$GNUSTL_LIBS/x86/libgnustl_static.a" "$ABI_STL/lib/libstdc++.a"
	;;
	mips)
	copy_directory "$GNUSTL_LIBS/mips/include/bits" "$ABI_STL_INCLUDE_TARGET/bits"
	copy_file_list "$GNUSTL_LIBS/mips" "$ABI_STL/lib" "libgnustl_shared.so"
	copy_file_list "$GNUSTL_LIBS/mips" "$ABI_STL/lib" "libsupc++.a"
	cp -p "$GNUSTL_LIBS/mips/libgnustl_static.a" "$ABI_STL/lib/libstdc++.a"
	;;
	*)
	dump "ERROR: Unsupported NDK architecture!"
	esac

	# Install or Package
	if [ -n "$INSTALL_DIR" ] ; then
	dump "Copying files to: $INSTALL_DIR"
	run copy_directory "$TMPDIR" "$INSTALL_DIR"
	else
	PACKAGE_FILE="$PACKAGE_DIR/$TOOLCHAIN_NAME.tar.bz2"
	dump "Creating package file: $PACKAGE_FILE"
	pack_archive "$PACKAGE_FILE" "`dirname $TMPDIR`" "$TOOLCHAIN_NAME"
	fail_panic "Could not create tarball from $TMPDIR"
	fi
	dump "Cleaning up..."
	run rm -rf $TMPDIR

	dump "Done."