Setup OpenCL on Nouveau using SPIR-V
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Authored by pmoreau on Jan 18 2016, 10:48 PM.

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	#!/bin/bash
	# Last updated: 06 May 2017 18:10 GMT+1

	ROOT_DIR=${1}

	if [[ -z ${ROOT_DIR} ]]
	then
	echo "You need to specify a root directory where the software will be cloned/installed."
	unset ROOT_DIR
	exit 1
	fi

	cd ${ROOT_DIR}
	ROOT_DIR=`pwd`
	LLVM_DIR="${ROOT_DIR}/llvm"
	SPVTOOLS_DIR="${ROOT_DIR}/spvtools"
	MESA_DIR="${ROOT_DIR}/mesa"
	LLVM_INSTALL_PREFIX="${ROOT_DIR}/llvm_install"
	SPVTOOLS_INSTALL_PREFIX="${ROOT_DIR}/spvtools_install"
	MESA_INSTALL_PREFIX="${ROOT_DIR}/mesa_install"

	# Cloning LLVM and clang + building
	git clone -b khronos/spirv-3.6.1 https://github.com/pierremoreau/SPIRV-LLVM.git llvm
	cd ${LLVM_DIR}/tools
	git clone -b spirv-1.0 https://github.com/KhronosGroup/SPIR.git clang
	cd ${ROOT_DIR}
	mkdir llvm_build
	cd llvm_build
	cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX="${LLVM_INSTALL_PREFIX}" -DBUILD_SHARED_LIBS=On -DLLVM_TARGETS_TO_BUILD="X86" -DSPIRV_USE_LLVM_API=On ${LLVM_DIR}
	make install

	# Cloning and building SPIRV-Tools
	cd ${ROOT_DIR}
	git clone -b for_nouveau https://github.com/pierremoreau/SPIRV-Tools.git spvtools
	cd spvtools/external
	git clone https://github.com/google/googletest.git
	git clone https://github.com/KhronosGroup/SPIRV-Headers.git spirv-headers
	cd ${ROOT_DIR}
	mkdir spvtools_build
	cd spvtools_build
	cmake -DCMAKE_INSTALL_PREFIX="${SPVTOOLS_INSTALL_PREFIX}" -DCMAKE_BUILD_TYPE=Release -DSPIRV_BUILD_COMPRESSION=ON ../spvtools
	make install

	# Cloning and building Mesa
	cd ${ROOT_DIR}
	git clone -b nouveau_spirv_support https://phabricator.pmoreau.org/diffusion/MESA/mesa.git mesa
	mkdir mesa_build
	cd mesa_build
	../mesa/autogen.sh --prefix=${MESA_INSTALL_PREFIX} --disable-gles1 --disable-gles2 --disable-gbm --disable-egl --disable-osmesa --disable-xvmc --disable-va --disable-vdpau --enable-llvm -with-dri-drivers= --enable-dri3 --with-gallium-drivers=nouveau --enable-opencl --with-llvm-prefix=${LLVM_INSTALL_PREFIX} --enable-debug
	make install

	# Generate env file
	cd ${ROOT_DIR}
	echo "#!/bin/bash

	PATH=\"${LLVM_INSTALL_PREFIX}/bin:${SPVTOOLS_INSTALL_PREFIX}/bin:${MESA_INSTALL_PREFIX}/bin:${PATH}\"
	LD_LIBRARY_PATH=\"${LLVM_INSTALL_PREFIX}/lib:${SPVTOOLS_INSTALL_PREFIX}/lib64:${MESA_INSTALL_PREFIX}/lib:${LD_LIBRARY_PATH}\"
	PKG_CONFIG_PATH=\"${SPVTOOLS_INSTALL_PREFIX}/lib64/pkgconfig:${MESA_INSTALL_PREFIX}/lib/pkgconfig/:${PKG_CONFIG_PATH}\"
	ACLOCAL=\"aclocal -I ${LLVM_INSTALL_PREFIX}/share/aclocal:${MESA_INSTALL_PREFIX}/share/aclocal\"

	export LD_LIBRARY_PATH PKG_CONFIG_PATH ACLOCAL PATH" > mesa-spirv-env.sh
	chmod +x mesa-spirv-env.sh
	echo "An environment file was created in \"${ROOT_DIR}\": just source it before running any OpenCL program."

	# Unset variables

	unset ROOT_DIR
	unset LLVM_DIR
	unset SPVTOOLS_DIR
	unset MESA_DIR
	unset LLVM_INSTALL_PREFIX
	unset SPVTOOLS_INSTALL_PREFIX
	unset MESA_INSTALL_PREFIX