build/tools/build-llvm.sh - platform/ndk - Git at Google

 #!/bin/sh
 #
 # Copyright (C) 2012 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.
 #
 #  This shell script is used to rebuild the llvm and clang binaries
 #  for the Android NDK.
 #

 # include common function and variable definitions
 . `dirname $0`/prebuilt-common.sh

 PROGRAM_PARAMETERS="<src-dir> <ndk-dir> <toolchain>"

 PROGRAM_DESCRIPTION=\
 "Rebuild the LLVM prebuilt binaries for the Android NDK.

 Where <src-dir> is the location of toolchain sources, <ndk-dir> is
 the top-level NDK installation path and <toolchain> is the name of
 the toolchain to use (e.g. llvm-3.2)."

 RELEASE=`date +%Y%m%d`
 BUILD_OUT=/tmp/ndk-$USER/build/toolchain
 OPTION_BUILD_OUT=
 register_var_option "--build-out=<path>" OPTION_BUILD_OUT "Set temporary build directory"

 # Note: platform API level 9 or higher is needed for proper C++ support
 PLATFORM=$DEFAULT_PLATFORM
 register_var_option "--platform=<name>"  PLATFORM "Specify platform name"

 GMP_VERSION=$DEFAULT_GMP_VERSION
 register_var_option "--gmp-version=<version>" GMP_VERSION "Specify gmp version"

 PACKAGE_DIR=
 register_var_option "--package-dir=<path>" PACKAGE_DIR "Create archive tarball in specific directory"

 WINE=wine
 register_var_option "--wine=<path>" WINE "WINE needed to run llvm-config.exe for building mclinker with --mingw"

 POLLY=no
 do_polly_option () { POLLY=yes; }
 register_option "--with-polly" do_polly_option "Enable Polyhedral optimizations for LLVM"

 CHECK=no
 do_check_option () { CHECK=yes; }
 register_option "--check" do_check_option "Check LLVM"

 register_jobs_option
 register_canadian_option
 register_try64_option

 extract_parameters "$@"

 prepare_canadian_toolchain /tmp/ndk-$USER/build

 fix_option BUILD_OUT "$OPTION_BUILD_OUT" "build directory"
 setup_default_log_file $BUILD_OUT/config.log

 set_parameters ()
 {
     SRC_DIR=`cd $1; pwd`
     NDK_DIR=`cd $2; pwd`
     TOOLCHAIN="$3"

     # Check source directory
     #
     if [ -z "$SRC_DIR" ] ; then
         echo "ERROR: Missing source directory parameter. See --help for details."
         exit 1
     fi

     if [ ! -d "$SRC_DIR/$TOOLCHAIN/llvm" ] ; then
         echo "ERROR: Source directory does not contain llvm sources: $SRC_DIR/$TOOLCHAIN/llvm"
         exit 1
     fi

     if [ -e "$SRC_DIR/$TOOLCHAIN/llvm/tools/polly" -a ! -h "$SRC_DIR/$TOOLCHAIN/llvm/tools/polly" ] ; then
         echo "ERROR: polly, if exist, needs to be a symbolic link: $SRC_DIR/$TOOLCHAIN/llvm/tools/polly"
         exit 1
     fi

     GMP_SOURCE=$SRC_DIR/gmp/gmp-$GMP_VERSION.tar.bz2
     if [ ! -f "$GMP_SOURCE" ] ; then
         echo "ERROR: Source directory does not contain gmp: $GMP_SOURCE"
         exit 1
     fi

     log "Using source directory: $SRC_DIR"

     # Check NDK installation directory
     #
     if [ -z "$NDK_DIR" ] ; then
         echo "ERROR: Missing NDK directory parameter. See --help for details."
         exit 1
     fi

     if [ ! -d "$NDK_DIR" ] ; then
         mkdir -p $NDK_DIR
         if [ $? != 0 ] ; then
             echo "ERROR: Could not create target NDK installation path: $NDK_DIR"
             exit 1
         fi
     fi

     log "Using NDK directory: $NDK_DIR"

     # Check toolchain name
     #
     if [ -z "$TOOLCHAIN" ] ; then
         echo "ERROR: Missing toolchain name parameter. See --help for details."
         exit 1
     fi
 }

 set_parameters $PARAMETERS

 prepare_target_build

 if [ "$PACKAGE_DIR" ]; then
     mkdir -p "$PACKAGE_DIR"
     fail_panic "Could not create package directory: $PACKAGE_DIR"
 fi

 set_toolchain_ndk $NDK_DIR $TOOLCHAIN

 if [ "$MINGW" != "yes" -a "$DARWIN" != "yes" ] ; then
     dump "Using C compiler: $CC"
     dump "Using C++ compiler: $CXX"
 fi

 rm -rf $BUILD_OUT
 mkdir -p $BUILD_OUT

 MAKE_FLAGS=
 if [ "$VERBOSE" = "yes" ]; then
     MAKE_FLAGS="VERBOSE=1"
 fi

 TOOLCHAIN_BUILD_PREFIX=$BUILD_OUT/prefix

 ARCH=$HOST_ARCH

 # Note that the following 2 flags only apply for BUILD_CC in canadian cross build
 CFLAGS_FOR_BUILD="-O2 -I$TOOLCHAIN_BUILD_PREFIX/include"
 LDFLAGS_FOR_BUILD="-L$TOOLCHAIN_BUILD_PREFIX/lib"

 # Eliminate dependency on libgcc_s_sjlj-1.dll and libstdc++-6.dll on cross builds
 if [ "$DARWIN" = "yes" -o "$MINGW" = "yes" ]; then
     LDFLAGS_FOR_BUILD=$LDFLAGS_FOR_BUILD" -static-libgcc -static-libstdc++"
 fi

 CFLAGS="$CFLAGS $CFLAGS_FOR_BUILD $HOST_CFLAGS"
 CXXFLAGS="$CXXFLAGS $CFLAGS_FOR_BUILD $HOST_CFLAGS"  # polly doesn't look at CFLAGS !
 LDFLAGS="$LDFLAGS $LDFLAGS_FOR_BUILD $HOST_LDFLAGS"
 export CC CXX CFLAGS CXXFLAGS LDFLAGS CFLAGS_FOR_BUILD LDFLAGS_FOR_BUILD REQUIRES_RTTI=1 ARCH

 if [ "$DARWIN" = "yes" ]; then
     # To stop /usr/bin/install -s calls strip on darwin binary
     export KEEP_SYMBOLS=1
     # Disable polly for now
     POLLY=no
 fi

 if [ "$POLLY" = "yes" -a ! -d "$SRC_DIR/$TOOLCHAIN/polly" ] ; then
     dump "Disable polly because $SRC_DIR/$TOOLCHAIN/polly doesn't exist"
     POLLY=no
 fi

 EXTRA_CONFIG_FLAGS=
 rm -rf $SRC_DIR/$TOOLCHAIN/llvm/tools/polly
 if [ "$POLLY" = "yes" ]; then
     # crate symbolic link
     ln -s ../../polly $SRC_DIR/$TOOLCHAIN/llvm/tools

     # build polly dependencies
     unpack_archive "$GMP_SOURCE" "$BUILD_OUT"
     fail_panic "Couldn't unpack $SRC_DIR/gmp/gmp-$GMP_VERSION to $BUILD_OUT"

     GMP_BUILD_OUT=$BUILD_OUT/gmp-$GMP_VERSION
     cd $GMP_BUILD_OUT
     fail_panic "Couldn't cd into gmp build path: $GMP_BUILD_OUT"

     OLD_ABI="${ABI}"
     export ABI=$HOST_GMP_ABI  # needed to build 32-bit on 64-bit host
     run ./configure \
         --prefix=$TOOLCHAIN_BUILD_PREFIX \
         --host=$ABI_CONFIGURE_HOST \
         --build=$ABI_CONFIGURE_BUILD \
         --disable-shared \
         --disable-nls \
         --enable-cxx
     fail_panic "Couldn't configure gmp"
     run make -j$NUM_JOBS
     fail_panic "Couldn't compile gmp"
     run make install
     fail_panic "Couldn't install gmp to $TOOLCHAIN_BUILD_PREFIX"
     ABI="$OLD_ABI"

     CLOOG_BUILD_OUT=$BUILD_OUT/cloog
     mkdir -p $CLOOG_BUILD_OUT && cd $CLOOG_BUILD_OUT
     fail_panic "Couldn't create cloog build path: $CLOOG_BUILD_OUT"

     run $SRC_DIR/$TOOLCHAIN/llvm/tools/polly/utils/cloog_src/configure \
         --prefix=$TOOLCHAIN_BUILD_PREFIX \
         --host=$ABI_CONFIGURE_HOST \
         --build=$ABI_CONFIGURE_BUILD \
         --with-gmp-prefix=$TOOLCHAIN_BUILD_PREFIX \
         --disable-shared \
         --disable-nls
     fail_panic "Couldn't configure cloog"
     run make -j$NUM_JOBS
     fail_panic "Couldn't compile cloog"
     run make install
     fail_panic "Couldn't install cloog to $TOOLCHAIN_BUILD_PREFIX"

     EXTRA_CONFIG_FLAGS="--with-cloog=$TOOLCHAIN_BUILD_PREFIX --with-isl=$TOOLCHAIN_BUILD_PREFIX"

     # Allow text relocs when linking LLVMPolly.dylib against statically linked libgmp.a
     if [ "$HOST_TAG32" = "darwin-x86" -o "$DARWIN" = "yes" ]; then   # -a "$HOST_ARCH" = "x86"
         LDFLAGS="$LDFLAGS -read_only_relocs suppress"
         export LDFLAGS
     fi
 fi # POLLY = yes

 # configure the toolchain
 dump "Configure: $TOOLCHAIN toolchain build"
 LLVM_BUILD_OUT=$BUILD_OUT/llvm
 mkdir -p $LLVM_BUILD_OUT && cd $LLVM_BUILD_OUT
 fail_panic "Couldn't cd into llvm build path: $LLVM_BUILD_OUT"

 run $SRC_DIR/$TOOLCHAIN/llvm/configure \
     --prefix=$TOOLCHAIN_BUILD_PREFIX \
     --host=$ABI_CONFIGURE_HOST \
     --build=$ABI_CONFIGURE_BUILD \
     --with-bug-report-url=$DEFAULT_ISSUE_TRACKER_URL \
     --enable-targets=arm,mips,x86 \
     --enable-optimized \
     --with-binutils-include=$SRC_DIR/binutils/binutils-$DEFAULT_BINUTILS_VERSION/include \
     $EXTRA_CONFIG_FLAGS
 fail_panic "Couldn't configure llvm toolchain"

 # build llvm/clang
 dump "Building : llvm toolchain [this can take a long time]."
 cd $LLVM_BUILD_OUT
 run make -j$NUM_JOBS $MAKE_FLAGS
 fail_panic "Couldn't compile llvm toolchain"

 if [ "$CHECK" = "yes" -a "$MINGW" != "yes" -a "$DARWIN" != "yes" ] ; then
     # run the regression test
     dump "Running  : llvm toolchain regression test"
     cd $LLVM_BUILD_OUT
     run make check-all
     fail_warning "Couldn't pass all llvm regression test"  # change to fail_panic later
     if [ "$POLLY" = "yes" ]; then
         dump "Running  : polly toolchain regression test"
         cd $LLVM_BUILD_OUT
         run make polly-test -C tools/polly/test
         fail_warning "Couldn't pass all polly regression test"  # change to fail_panic later
     fi
 fi

 # install the toolchain to its final location
 dump "Install  : llvm toolchain binaries"
 cd $LLVM_BUILD_OUT && run make install $MAKE_FLAGS
 fail_panic "Couldn't install llvm toolchain to $TOOLCHAIN_BUILD_PREFIX"

 # create llvm-config wrapper if needed.
 # llvm-config is invoked by other llvm projects (eg. mclinker/configure)
 # to figure out flags and libs dependencies.  Unfortunately in canadian-build
 # llvm-config[.exe] may not run directly.  Create a wrapper.
 LLVM_CONFIG=llvm-config
 if [ "$MINGW" = "yes" ] ; then
     LLVM_CONFIG=llvm-config.sh
     cat > $TOOLCHAIN_BUILD_PREFIX/bin/$LLVM_CONFIG <<EOF
 $WINE \`dirname \$0\`/llvm-config.exe "\$@"
 EOF
     chmod 0755 $TOOLCHAIN_BUILD_PREFIX/bin/$LLVM_CONFIG
 fi

 # build mclinker only against default the LLVM version, once
 if [ "$TOOLCHAIN" = "llvm-$DEFAULT_LLVM_VERSION" -a "$DARWIN" != "yes" ] ; then
     dump "Copy     : mclinker source"
     MCLINKER_SRC_DIR=$BUILD_OUT/mclinker
     mkdir -p $MCLINKER_SRC_DIR
     fail_panic "Couldn't create mclinker source directory: $MCLINKER_SRC_DIR"

     run copy_directory "$SRC_DIR/mclinker" "$MCLINKER_SRC_DIR"
     fail_panic "Couldn't copy mclinker source: $MCLINKER_SRC_DIR"

     cd $MCLINKER_SRC_DIR && run ./autogen.sh
     fail_panic "Couldn't run autogen.sh in $MCLINKER_SRC_DIR"

     dump "Configure: mclinker against $TOOLCHAIN"
     MCLINKER_BUILD_OUT=$MCLINKER_SRC_DIR/build
     mkdir -p $MCLINKER_BUILD_OUT && cd $MCLINKER_BUILD_OUT
     fail_panic "Couldn't cd into mclinker build path: $MCLINKER_BUILD_OUT"

     run $MCLINKER_SRC_DIR/configure \
         --prefix=$TOOLCHAIN_BUILD_PREFIX \
         --with-llvm-config=$TOOLCHAIN_BUILD_PREFIX/bin/$LLVM_CONFIG \
         --host=$ABI_CONFIGURE_HOST \
         --build=$ABI_CONFIGURE_BUILD
     fail_panic "Couldn't configure mclinker"

     dump "Building : mclinker"
     cd $MCLINKER_BUILD_OUT
     run make -j$NUM_JOBS $MAKE_FLAGS
     fail_panic "Couldn't compile mclinker"

     dump "Install  : mclinker"
     cd $MCLINKER_BUILD_OUT && run make install $MAKE_FLAGS
     fail_panic "Couldn't install mclinker to $TOOLCHAIN_BUILD_PREFIX"

     if [ "$CHECK" = "yes" -a "$MINGW" != "yes" -a "$DARWIN" != "yes" ] ; then
         # run the regression test
         dump "Running  : mclinker regression test"
         cd $MCLINKER_BUILD_OUT
         run make check
         fail_warning "Couldn't pass all mclinker regression test"  # change to fail_panic later
     fi
 fi

 # remove redundant bits
 rm -rf $TOOLCHAIN_BUILD_PREFIX/docs
 rm -rf $TOOLCHAIN_BUILD_PREFIX/include
 rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/*.a
 rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/*.la
 rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/pkgconfig
 rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/lib[cp]*.so
 rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/lib[cp]*.dylib
 rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/B*.so
 rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/B*.dylib
 rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/LLVMH*.so
 rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/LLVMH*.dylib
 rm -rf $TOOLCHAIN_BUILD_PREFIX/bin/ld.bcc*
 rm -rf $TOOLCHAIN_BUILD_PREFIX/share

 UNUSED_LLVM_EXECUTABLES="
 bugpoint c-index-test clang-check clang-tblgen lli llvm-as llvm-bcanalyzer
 llvm-config llvm-config-host llvm-cov llvm-diff llvm-dwarfdump llvm-extract llvm-ld
 llvm-mc llvm-nm llvm-mcmarkup llvm-objdump llvm-prof llvm-ranlib llvm-readobj llvm-rtdyld
 llvm-size llvm-stress llvm-stub llvm-tblgen macho-dump cloog"

 for i in $UNUSED_LLVM_EXECUTABLES; do
     rm -f $TOOLCHAIN_BUILD_PREFIX/bin/$i
     rm -f $TOOLCHAIN_BUILD_PREFIX/bin/$i.exe
 done

 test -z "$STRIP" && STRIP=strip
 find $TOOLCHAIN_BUILD_PREFIX/bin -maxdepth 1 -type f -exec $STRIP {} \;
 # Note that MacOSX strip generate the follow error on .dylib:
 # "symbols referenced by indirect symbol table entries that can't be stripped "
 find $TOOLCHAIN_BUILD_PREFIX/lib -maxdepth 1 -type f \( -name "*.dll" -o -name "*.so" \) -exec $STRIP {} \;

 # copy to toolchain path
 run copy_directory "$TOOLCHAIN_BUILD_PREFIX" "$TOOLCHAIN_PATH"

 # create analyzer/++ scripts
 for ABI in $PREBUILT_ABIS; do
     ANALYZER_PATH="$TOOLCHAIN_PATH/bin/$ABI"
     ANALYZER="$ANALYZER_PATH/analyzer"
     mkdir -p "$ANALYZER_PATH"
     case "$ABI" in
       armeabi)
           LLVM_TARGET=armv5te-none-linux-androideabi
           ;;
       armeabi-v7a)
           LLVM_TARGET=armv7-none-linux-androideabi
           ;;
       x86)
           LLVM_TARGET=i686-none-linux-android
           ;;
       mips)
           LLVM_TARGET=mipsel-none-linux-android
           ;;
       *)
         dump "ERROR: Unsupported NDK ABI: $ABI"
         exit 1
     esac

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

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

 if [ "$PACKAGE_DIR" ]; then
     ARCHIVE="$TOOLCHAIN-$HOST_TAG.tar.bz2"
     SUBDIR=$(get_toolchain_install_subdir $TOOLCHAIN $HOST_TAG)
     dump "Packaging $ARCHIVE"
     pack_archive "$PACKAGE_DIR/$ARCHIVE" "$NDK_DIR" "$SUBDIR"
 fi

 dump "Done."
 if [ -z "$OPTION_BUILD_OUT" ] ; then
     rm -rf $BUILD_OUT
 fi
	#!/bin/sh
	#
	# Copyright (C) 2012 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.
	#
	# This shell script is used to rebuild the llvm and clang binaries
	# for the Android NDK.
	#

	# include common function and variable definitions
	. `dirname $0`/prebuilt-common.sh

	PROGRAM_PARAMETERS="<src-dir> <ndk-dir> <toolchain>"

	PROGRAM_DESCRIPTION=\
	"Rebuild the LLVM prebuilt binaries for the Android NDK.

	Where <src-dir> is the location of toolchain sources, <ndk-dir> is
	the top-level NDK installation path and <toolchain> is the name of
	the toolchain to use (e.g. llvm-3.2)."

	RELEASE=`date +%Y%m%d`
	BUILD_OUT=/tmp/ndk-$USER/build/toolchain
	OPTION_BUILD_OUT=
	register_var_option "--build-out=<path>" OPTION_BUILD_OUT "Set temporary build directory"

	# Note: platform API level 9 or higher is needed for proper C++ support
	PLATFORM=$DEFAULT_PLATFORM
	register_var_option "--platform=<name>" PLATFORM "Specify platform name"

	GMP_VERSION=$DEFAULT_GMP_VERSION
	register_var_option "--gmp-version=<version>" GMP_VERSION "Specify gmp version"

	PACKAGE_DIR=
	register_var_option "--package-dir=<path>" PACKAGE_DIR "Create archive tarball in specific directory"

	WINE=wine
	register_var_option "--wine=<path>" WINE "WINE needed to run llvm-config.exe for building mclinker with --mingw"

	POLLY=no
	do_polly_option () { POLLY=yes; }
	register_option "--with-polly" do_polly_option "Enable Polyhedral optimizations for LLVM"

	CHECK=no
	do_check_option () { CHECK=yes; }
	register_option "--check" do_check_option "Check LLVM"

	register_jobs_option
	register_canadian_option
	register_try64_option

	extract_parameters "$@"

	prepare_canadian_toolchain /tmp/ndk-$USER/build

	fix_option BUILD_OUT "$OPTION_BUILD_OUT" "build directory"
	setup_default_log_file $BUILD_OUT/config.log

	set_parameters ()
	{
	SRC_DIR=`cd $1; pwd`
	NDK_DIR=`cd $2; pwd`
	TOOLCHAIN="$3"

	# Check source directory
	#
	if [ -z "$SRC_DIR" ] ; then
	echo "ERROR: Missing source directory parameter. See --help for details."
	exit 1
	fi

	if [ ! -d "$SRC_DIR/$TOOLCHAIN/llvm" ] ; then
	echo "ERROR: Source directory does not contain llvm sources: $SRC_DIR/$TOOLCHAIN/llvm"
	exit 1
	fi

	if [ -e "$SRC_DIR/$TOOLCHAIN/llvm/tools/polly" -a ! -h "$SRC_DIR/$TOOLCHAIN/llvm/tools/polly" ] ; then
	echo "ERROR: polly, if exist, needs to be a symbolic link: $SRC_DIR/$TOOLCHAIN/llvm/tools/polly"
	exit 1
	fi

	GMP_SOURCE=$SRC_DIR/gmp/gmp-$GMP_VERSION.tar.bz2
	if [ ! -f "$GMP_SOURCE" ] ; then
	echo "ERROR: Source directory does not contain gmp: $GMP_SOURCE"
	exit 1
	fi

	log "Using source directory: $SRC_DIR"

	# Check NDK installation directory
	#
	if [ -z "$NDK_DIR" ] ; then
	echo "ERROR: Missing NDK directory parameter. See --help for details."
	exit 1
	fi

	if [ ! -d "$NDK_DIR" ] ; then
	mkdir -p $NDK_DIR
	if [ $? != 0 ] ; then
	echo "ERROR: Could not create target NDK installation path: $NDK_DIR"
	exit 1
	fi
	fi

	log "Using NDK directory: $NDK_DIR"

	# Check toolchain name
	#
	if [ -z "$TOOLCHAIN" ] ; then
	echo "ERROR: Missing toolchain name parameter. See --help for details."
	exit 1
	fi
	}

	set_parameters $PARAMETERS

	prepare_target_build

	if [ "$PACKAGE_DIR" ]; then
	mkdir -p "$PACKAGE_DIR"
	fail_panic "Could not create package directory: $PACKAGE_DIR"
	fi

	set_toolchain_ndk $NDK_DIR $TOOLCHAIN

	if [ "$MINGW" != "yes" -a "$DARWIN" != "yes" ] ; then
	dump "Using C compiler: $CC"
	dump "Using C++ compiler: $CXX"
	fi

	rm -rf $BUILD_OUT
	mkdir -p $BUILD_OUT

	MAKE_FLAGS=
	if [ "$VERBOSE" = "yes" ]; then
	MAKE_FLAGS="VERBOSE=1"
	fi

	TOOLCHAIN_BUILD_PREFIX=$BUILD_OUT/prefix

	ARCH=$HOST_ARCH

	# Note that the following 2 flags only apply for BUILD_CC in canadian cross build
	CFLAGS_FOR_BUILD="-O2 -I$TOOLCHAIN_BUILD_PREFIX/include"
	LDFLAGS_FOR_BUILD="-L$TOOLCHAIN_BUILD_PREFIX/lib"

	# Eliminate dependency on libgcc_s_sjlj-1.dll and libstdc++-6.dll on cross builds
	if [ "$DARWIN" = "yes" -o "$MINGW" = "yes" ]; then
	LDFLAGS_FOR_BUILD=$LDFLAGS_FOR_BUILD" -static-libgcc -static-libstdc++"
	fi

	CFLAGS="$CFLAGS $CFLAGS_FOR_BUILD $HOST_CFLAGS"
	CXXFLAGS="$CXXFLAGS $CFLAGS_FOR_BUILD $HOST_CFLAGS" # polly doesn't look at CFLAGS !
	LDFLAGS="$LDFLAGS $LDFLAGS_FOR_BUILD $HOST_LDFLAGS"
	export CC CXX CFLAGS CXXFLAGS LDFLAGS CFLAGS_FOR_BUILD LDFLAGS_FOR_BUILD REQUIRES_RTTI=1 ARCH

	if [ "$DARWIN" = "yes" ]; then
	# To stop /usr/bin/install -s calls strip on darwin binary
	export KEEP_SYMBOLS=1
	# Disable polly for now
	POLLY=no
	fi

	if [ "$POLLY" = "yes" -a ! -d "$SRC_DIR/$TOOLCHAIN/polly" ] ; then
	dump "Disable polly because $SRC_DIR/$TOOLCHAIN/polly doesn't exist"
	POLLY=no
	fi

	EXTRA_CONFIG_FLAGS=
	rm -rf $SRC_DIR/$TOOLCHAIN/llvm/tools/polly
	if [ "$POLLY" = "yes" ]; then
	# crate symbolic link
	ln -s ../../polly $SRC_DIR/$TOOLCHAIN/llvm/tools

	# build polly dependencies
	unpack_archive "$GMP_SOURCE" "$BUILD_OUT"
	fail_panic "Couldn't unpack $SRC_DIR/gmp/gmp-$GMP_VERSION to $BUILD_OUT"

	GMP_BUILD_OUT=$BUILD_OUT/gmp-$GMP_VERSION
	cd $GMP_BUILD_OUT
	fail_panic "Couldn't cd into gmp build path: $GMP_BUILD_OUT"

	OLD_ABI="${ABI}"
	export ABI=$HOST_GMP_ABI # needed to build 32-bit on 64-bit host
	run ./configure \
	--prefix=$TOOLCHAIN_BUILD_PREFIX \
	--host=$ABI_CONFIGURE_HOST \
	--build=$ABI_CONFIGURE_BUILD \
	--disable-shared \
	--disable-nls \
	--enable-cxx
	fail_panic "Couldn't configure gmp"
	run make -j$NUM_JOBS
	fail_panic "Couldn't compile gmp"
	run make install
	fail_panic "Couldn't install gmp to $TOOLCHAIN_BUILD_PREFIX"
	ABI="$OLD_ABI"

	CLOOG_BUILD_OUT=$BUILD_OUT/cloog
	mkdir -p $CLOOG_BUILD_OUT && cd $CLOOG_BUILD_OUT
	fail_panic "Couldn't create cloog build path: $CLOOG_BUILD_OUT"

	run $SRC_DIR/$TOOLCHAIN/llvm/tools/polly/utils/cloog_src/configure \
	--prefix=$TOOLCHAIN_BUILD_PREFIX \
	--host=$ABI_CONFIGURE_HOST \
	--build=$ABI_CONFIGURE_BUILD \
	--with-gmp-prefix=$TOOLCHAIN_BUILD_PREFIX \
	--disable-shared \
	--disable-nls
	fail_panic "Couldn't configure cloog"
	run make -j$NUM_JOBS
	fail_panic "Couldn't compile cloog"
	run make install
	fail_panic "Couldn't install cloog to $TOOLCHAIN_BUILD_PREFIX"

	EXTRA_CONFIG_FLAGS="--with-cloog=$TOOLCHAIN_BUILD_PREFIX --with-isl=$TOOLCHAIN_BUILD_PREFIX"

	# Allow text relocs when linking LLVMPolly.dylib against statically linked libgmp.a
	if [ "$HOST_TAG32" = "darwin-x86" -o "$DARWIN" = "yes" ]; then # -a "$HOST_ARCH" = "x86"
	LDFLAGS="$LDFLAGS -read_only_relocs suppress"
	export LDFLAGS
	fi
	fi # POLLY = yes

	# configure the toolchain
	dump "Configure: $TOOLCHAIN toolchain build"
	LLVM_BUILD_OUT=$BUILD_OUT/llvm
	mkdir -p $LLVM_BUILD_OUT && cd $LLVM_BUILD_OUT
	fail_panic "Couldn't cd into llvm build path: $LLVM_BUILD_OUT"

	run $SRC_DIR/$TOOLCHAIN/llvm/configure \
	--prefix=$TOOLCHAIN_BUILD_PREFIX \
	--host=$ABI_CONFIGURE_HOST \
	--build=$ABI_CONFIGURE_BUILD \
	--with-bug-report-url=$DEFAULT_ISSUE_TRACKER_URL \
	--enable-targets=arm,mips,x86 \
	--enable-optimized \
	--with-binutils-include=$SRC_DIR/binutils/binutils-$DEFAULT_BINUTILS_VERSION/include \
	$EXTRA_CONFIG_FLAGS
	fail_panic "Couldn't configure llvm toolchain"

	# build llvm/clang
	dump "Building : llvm toolchain [this can take a long time]."
	cd $LLVM_BUILD_OUT
	run make -j$NUM_JOBS $MAKE_FLAGS
	fail_panic "Couldn't compile llvm toolchain"

	if [ "$CHECK" = "yes" -a "$MINGW" != "yes" -a "$DARWIN" != "yes" ] ; then
	# run the regression test
	dump "Running : llvm toolchain regression test"
	cd $LLVM_BUILD_OUT
	run make check-all
	fail_warning "Couldn't pass all llvm regression test" # change to fail_panic later
	if [ "$POLLY" = "yes" ]; then
	dump "Running : polly toolchain regression test"
	cd $LLVM_BUILD_OUT
	run make polly-test -C tools/polly/test
	fail_warning "Couldn't pass all polly regression test" # change to fail_panic later
	fi
	fi

	# install the toolchain to its final location
	dump "Install : llvm toolchain binaries"
	cd $LLVM_BUILD_OUT && run make install $MAKE_FLAGS
	fail_panic "Couldn't install llvm toolchain to $TOOLCHAIN_BUILD_PREFIX"

	# create llvm-config wrapper if needed.
	# llvm-config is invoked by other llvm projects (eg. mclinker/configure)
	# to figure out flags and libs dependencies. Unfortunately in canadian-build
	# llvm-config[.exe] may not run directly. Create a wrapper.
	LLVM_CONFIG=llvm-config
	if [ "$MINGW" = "yes" ] ; then
	LLVM_CONFIG=llvm-config.sh
	cat > $TOOLCHAIN_BUILD_PREFIX/bin/$LLVM_CONFIG <<EOF
	$WINE \`dirname \$0\`/llvm-config.exe "\$@"
	EOF
	chmod 0755 $TOOLCHAIN_BUILD_PREFIX/bin/$LLVM_CONFIG
	fi

	# build mclinker only against default the LLVM version, once
	if [ "$TOOLCHAIN" = "llvm-$DEFAULT_LLVM_VERSION" -a "$DARWIN" != "yes" ] ; then
	dump "Copy : mclinker source"
	MCLINKER_SRC_DIR=$BUILD_OUT/mclinker
	mkdir -p $MCLINKER_SRC_DIR
	fail_panic "Couldn't create mclinker source directory: $MCLINKER_SRC_DIR"

	run copy_directory "$SRC_DIR/mclinker" "$MCLINKER_SRC_DIR"
	fail_panic "Couldn't copy mclinker source: $MCLINKER_SRC_DIR"

	cd $MCLINKER_SRC_DIR && run ./autogen.sh
	fail_panic "Couldn't run autogen.sh in $MCLINKER_SRC_DIR"

	dump "Configure: mclinker against $TOOLCHAIN"
	MCLINKER_BUILD_OUT=$MCLINKER_SRC_DIR/build
	mkdir -p $MCLINKER_BUILD_OUT && cd $MCLINKER_BUILD_OUT
	fail_panic "Couldn't cd into mclinker build path: $MCLINKER_BUILD_OUT"

	run $MCLINKER_SRC_DIR/configure \
	--prefix=$TOOLCHAIN_BUILD_PREFIX \
	--with-llvm-config=$TOOLCHAIN_BUILD_PREFIX/bin/$LLVM_CONFIG \
	--host=$ABI_CONFIGURE_HOST \
	--build=$ABI_CONFIGURE_BUILD
	fail_panic "Couldn't configure mclinker"

	dump "Building : mclinker"
	cd $MCLINKER_BUILD_OUT
	run make -j$NUM_JOBS $MAKE_FLAGS
	fail_panic "Couldn't compile mclinker"

	dump "Install : mclinker"
	cd $MCLINKER_BUILD_OUT && run make install $MAKE_FLAGS
	fail_panic "Couldn't install mclinker to $TOOLCHAIN_BUILD_PREFIX"

	if [ "$CHECK" = "yes" -a "$MINGW" != "yes" -a "$DARWIN" != "yes" ] ; then
	# run the regression test
	dump "Running : mclinker regression test"
	cd $MCLINKER_BUILD_OUT
	run make check
	fail_warning "Couldn't pass all mclinker regression test" # change to fail_panic later
	fi
	fi

	# remove redundant bits
	rm -rf $TOOLCHAIN_BUILD_PREFIX/docs
	rm -rf $TOOLCHAIN_BUILD_PREFIX/include
	rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/*.a
	rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/*.la
	rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/pkgconfig
	rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/lib[cp]*.so
	rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/lib[cp]*.dylib
	rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/B*.so
	rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/B*.dylib
	rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/LLVMH*.so
	rm -rf $TOOLCHAIN_BUILD_PREFIX/lib/LLVMH*.dylib
	rm -rf $TOOLCHAIN_BUILD_PREFIX/bin/ld.bcc*
	rm -rf $TOOLCHAIN_BUILD_PREFIX/share

	UNUSED_LLVM_EXECUTABLES="
	bugpoint c-index-test clang-check clang-tblgen lli llvm-as llvm-bcanalyzer
	llvm-config llvm-config-host llvm-cov llvm-diff llvm-dwarfdump llvm-extract llvm-ld
	llvm-mc llvm-nm llvm-mcmarkup llvm-objdump llvm-prof llvm-ranlib llvm-readobj llvm-rtdyld
	llvm-size llvm-stress llvm-stub llvm-tblgen macho-dump cloog"

	for i in $UNUSED_LLVM_EXECUTABLES; do
	rm -f $TOOLCHAIN_BUILD_PREFIX/bin/$i
	rm -f $TOOLCHAIN_BUILD_PREFIX/bin/$i.exe
	done

	test -z "$STRIP" && STRIP=strip
	find $TOOLCHAIN_BUILD_PREFIX/bin -maxdepth 1 -type f -exec $STRIP {} \;
	# Note that MacOSX strip generate the follow error on .dylib:
	# "symbols referenced by indirect symbol table entries that can't be stripped "
	find $TOOLCHAIN_BUILD_PREFIX/lib -maxdepth 1 -type f \( -name ".dll" -o -name ".so" \) -exec $STRIP {} \;

	# copy to toolchain path
	run copy_directory "$TOOLCHAIN_BUILD_PREFIX" "$TOOLCHAIN_PATH"

	# create analyzer/++ scripts
	for ABI in $PREBUILT_ABIS; do
	ANALYZER_PATH="$TOOLCHAIN_PATH/bin/$ABI"
	ANALYZER="$ANALYZER_PATH/analyzer"
	mkdir -p "$ANALYZER_PATH"
	case "$ABI" in
	armeabi)
	LLVM_TARGET=armv5te-none-linux-androideabi
	;;
	armeabi-v7a)
	LLVM_TARGET=armv7-none-linux-androideabi
	;;
	x86)
	LLVM_TARGET=i686-none-linux-android
	;;
	mips)
	LLVM_TARGET=mipsel-none-linux-android
	;;
	*)
	dump "ERROR: Unsupported NDK ABI: $ABI"
	exit 1
	esac

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

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

	if [ "$PACKAGE_DIR" ]; then
	ARCHIVE="$TOOLCHAIN-$HOST_TAG.tar.bz2"
	SUBDIR=$(get_toolchain_install_subdir $TOOLCHAIN $HOST_TAG)
	dump "Packaging $ARCHIVE"
	pack_archive "$PACKAGE_DIR/$ARCHIVE" "$NDK_DIR" "$SUBDIR"
	fi

	dump "Done."
	if [ -z "$OPTION_BUILD_OUT" ] ; then
	rm -rf $BUILD_OUT
	fi