# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

EAPI=6
PYTHON_COMPAT=( python3_{4,5,6} )

EGIT_REPO_URI="https://github.com/KhronosGroup/Vulkan-LoaderAndValidationLayers.git"

inherit python-any-r1 cmake-multilib git-r3


DESCRIPTION="Vulkan Installable Client Driver (ICD) Loader"
HOMEPAGE="https://github.com/KhronosGroup/Vulkan-LoaderAndValidationLayers"

LICENSE="Apache-2.0"
SLOT="0"
IUSE="+layers wayland X vulkaninfo"

RDEPEND=""
DEPEND="${PYTHON_DEPS}
	wayland? ( dev-libs/wayland:=[${MULTILIB_USEDEP}] )
	X? ( x11-libs/libX11:=[${MULTILIB_USEDEP}] )
	dev-util/SPIRV-Tools
	dev-util/glslang
	"

src_unpack(){
	git-r3_src_unpack
	
	mkdir -p external/glslang
	EGIT_REPO_URI="https://github.com/KhronosGroup/glslang.git"
	EGIT_CHECKOUT_DIR=${WORKDIR}/${P}/external/glslang
	git-r3_src_unpack

	mkdir -p external/glslang/External/spirv-tools/
	EGIT_REPO_URI="https://github.com/KhronosGroup/SPIRV-Tools"
	EGIT_CHECKOUT_DIR=${WORKDIR}/${P}/external/glslang/External/spirv-tools
	git-r3_src_unpack

	mkdir -p external/glslang/External/spirv-headers/
	EGIT_REPO_URI="https://github.com/KhronosGroup/SPIRV-Headers"
	EGIT_CHECKOUT_DIR=${WORKDIR}/${P}/external/glslang/External/spirv-headers
	git-r3_src_unpack
}


multilib_src_configure() {
#	if [[ ${ABI} == x86 ]]; then
#		export ASFLAGS="--32"
#	fi
	local mycmakeargs=(
		-DCMAKE_SKIP_RPATH=True
		-DBUILD_TESTS=False
		-DBUILD_LAYERS=False
		-DBUILD_DEMOS=False
		-DBUILD_VKJSON=False
		-DBUILD_LOADER=True
		-DBUILD_WSI_MIR_SUPPORT=False
		-DBUILD_WSI_WAYLAND_SUPPORT=$(usex wayland)
		-DBUILD_WSI_XCB_SUPPORT=$(usex X)
		-DBUILD_WSI_XLIB_SUPPORT=$(usex X)
		-DBUILD_LAYERS=$(usex layers)
		# Build all demos to get vulkaninfo
		-DBUILD_DEMOS=$(usex vulkaninfo)
		-DCMAKE_C_FLAGS="${CFLAGS}"
		-DCMAKE_CXX_FLAGS="${CXXFLAGS}"
		-DCMAKE_LD_FLAGS="${LDFLAGS}"
	)
	cmake-utils_src_configure
	if [[ ${ABI} == x86 ]]; then
		unset ASFLAGS
	fi
}

multilib_src_install() {
	dolib.so loader/libvulkan.so*
	dolib.so layers/*.so
	dolib.so *.so

	if multilib_is_native_abi; then
		use vulkaninfo && dobin demos/vulkaninfo

		insinto /usr/$(get_libdir)/pkgconfig/
		doins loader/vulkan.pc
	fi
}

multilib_src_install_all() {
	keepdir /etc/vulkan/icd.d

	cd "${S}"
	insinto /usr/include/vulkan
	doins include/vulkan/*.h

	insinto /usr/share/vulkan/explicit_layer.d
	doins layers/linux/*.json

	einstalldocs
}