Compile LLVM/Rust on Ubuntu 12.04 using non-standard paths.

llvm_boostrap.sh

#!/bin/sh

BOOTSTRAP_ROOT=/home/william/Projects
#TEMP_TOOLS=$BOOTSTRAP_ROOT/llvm-temp-tools
TEMP_TOOLS=$BOOTSTRAP_ROOT/llvm-toolchain
LLVM_TOOLCHAIN=$BOOTSTRAP_ROOT/llvm-toolchain
FETCH=wget #Try BSD FTP if wget doesn't exist.
NUM_JOBS=4
#export PATH=$TEMP_TOOLS/bin:$PATH
export LD_LIBRARY_PATH=$TEMP_TOOLS/lib:$LD_LIBRARY_PATH


get_phase() {
	PHASE=`cat llvm_phase`
}

put_phase() {
	echo "$1" > llvm_phase
}

get_gcc() {
	$FETCH ftp://ftp.gnu.org/gnu/gcc/gcc-4.8.3/gcc-4.8.3.tar.bz2
	tar -xjf gcc-4.8.3.tar.bz2
	rm gcc-4.8.3.tar.bz2
	cd gcc-4.8.3
	./contrib/download_prerequisites
	cd $BOOTSTRAP_ROOT 
	mkdir build-gcc-for-llvm
}

build_gcc() {
	cd build-gcc-for-llvm
	../gcc-4.8.3/configure --prefix=$TEMP_TOOLS --enable-languages=c,c++
	make -j$NUM_JOBS
	make install
	cd $BOOTSTRAP_ROOT
}

get_cmake() {
	$FETCH http://www.cmake.org/files/v3.1/cmake-3.1.0.tar.gz
	tar -xzf cmake-3.1.0.tar.gz
	rm cmake-3.1.0.tar.gz
	cd $BOOTSTRAP_ROOT
}

build_cmake() {
	cd cmake-3.1.0
	./bootstrap --prefix=$TEMP_TOOLS
	make -j$NUM_JOBS
	make install
	cd $BOOTSTRAP_ROOT
}

get_llvm() {
	git clone http://llvm.org/git/llvm
	mkdir build-llvm
}

get_clang() {
	cd llvm/tools
	git clone http://llvm.org/git/clang
	cd $BOOTSTRAP_ROOT
}

build_llvm() {
	cd build-llvm
	CC=$TEMP_TOOLS/bin/gcc CXX=$TEMP_TOOLS/bin/g++ \
		$TEMP_TOOLS/bin/cmake \
		-DCMAKE_CXX_LINK_FLAGS="-Wl,-rpath,$TEMP_TOOLS/lib -L$TEMP_TOOLS/lib" \
		-DCMAKE_INSTALL_PREFIX=$TEMP_TOOLS ../llvm
	make -j$NUM_JOBS
	make install
	cd $BOOTSTRAP_ROOT
}

get_rust() {
	git clone https://github.com/rust-lang/rust	
	mkdir build-rust-external-llvm
}

build_rust() {
	cd build-rust-external-llvm
	CC=$TEMP_TOOLS/bin/gcc CXX=$TEMP_TOOLS/bin/g++ \
		CPPFLAGS="-I$TEMP_TOOLS/include" LDFLAGS="-Wl,-rpath,$TEMP_TOOLS/lib -L$TEMP_TOOLS/lib" \
		./configure --prefix=$TEMP_TOOLS --llvm-root=$TEMP_TOOLS
	RUSTFLAGS="-L$TEMP_TOOLS/lib" make -j$NUM_JOBS
	make install
	cd $BOOTSTRAP_ROOT
}


	
cd $BOOTSTRAP_ROOT

if [ ! -f llvm_phase ]; then
	PHASE=0
else
	get_phase
fi



while [ $PHASE -lt 8 ]; do

	case $PHASE in
	0)
		get_gcc
		put_phase 1
		;;
	1)
		build_gcc
		put_phase 2
		;;
	2)
		get_cmake
		put_phase 3
		;;
	3)
		build_cmake
		put_phase 4
		;;
	4)
		get_llvm
		get_clang
		put_phase 5
		;;
	5)
		build_llvm
		put_phase 6
		;;
	6)
		get_rust
		put_phase 7
		;;
	7)
		build_rust
		put_phase 8
		;;

	esac
	get_phase
done


cd $BOOTSTRAP_ROOT