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# Copyright 1999-2025 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
PYTHON_COMPAT=( python3_{12..14} )
inherit cmake check-reqs python-any-r1
DESCRIPTION="Microsoft DirectX Shader Compiler which is based on LLVM/Clang"
HOMEPAGE="https://github.com/microsoft/DirectXShaderCompiler"
# ToDo: unbundle spirv headers/tools and directx headers
SPIRV_HEADERS_COMMIT_MAGIC="aa6cef192b8e693916eb713e7a9ccadf06062ceb"
SPIRV_TOOLS_COMMIT_MAGIC="a62abcb402009b9ca5975e6167c09f237f630e0e"
DIRECTX_HEADERS_COMMIT_MAGIC="980971e835876dc0cde415e8f9bc646e64667bf7"
SRC_URI="
https://github.com/microsoft/DirectXShaderCompiler/archive/refs/tags/v${PV}.tar.gz
-> ${P}.tar.gz
https://github.com/KhronosGroup/SPIRV-Headers/archive/${SPIRV_HEADERS_COMMIT_MAGIC}.tar.gz
-> DirectXShaderCompiler-headers-${SPIRV_HEADERS_COMMIT_MAGIC}.tar.gz
https://github.com/KhronosGroup/SPIRV-Tools/archive/${SPIRV_TOOLS_COMMIT_MAGIC}.tar.gz
-> DirectXShaderCompiler-tools-${SPIRV_TOOLS_COMMIT_MAGIC}.tar.gz
https://github.com/microsoft/DirectX-Headers/archive/${DIRECTX_HEADERS_COMMIT_MAGIC}.tar.gz
-> DirectXShaderCompiler-directxheaders-${DIRECTX_HEADERS_COMMIT_MAGIC}.tar.gz
"
LICENSE="Apache-2.0-with-LLVM-exceptions UoI-NCSA BSD public-domain rc"
SLOT="0"
KEYWORDS="~amd64 ~x86"
DEPEND="${PYTHON_DEPS}"
# Todo: unbundle
# dev-util/directx-headers
# dev-util/spirv-headers
# dev-util/spirv-tools
RDEPEND="
virtual/zlib:=
>=dev-libs/libffi-3.4.2-r1:0=
"
BDEPEND="sys-devel/gnuconfig"
CHECKREQS_MEMORY="4G"
CHECKREQS_DISK_BUILD="4G"
src_prepare() {
rm -d "${S}"/external/SPIRV* || die
rm -d "${S}"/external/DirectX* || die
mv "${WORKDIR}/SPIRV-Headers-${SPIRV_HEADERS_COMMIT_MAGIC}" "${S}/external/SPIRV-Headers" || die "can't move headers"
mv "${WORKDIR}/SPIRV-Tools-${SPIRV_TOOLS_COMMIT_MAGIC}" "${S}/external/SPIRV-Tools"|| die "can't move tools"
mv "${WORKDIR}/DirectX-Headers-${DIRECTX_HEADERS_COMMIT_MAGIC}" "${S}/external/DirectX-Headers"|| die "can't move DXH"
cmake_src_prepare
}
src_configure() {
local mycmakeargs=(
-Wno-dev
-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/lib/llvm/dxc"
-DLLVM_BUILD_DOCS=0
-DLLVM_BUILD_TOOLS=0
-DSPIRV_BUILD_TESTS=0
-DLLVM_ENABLE_WERROR=0
-DSPIRV_WERROR=0
-DSPIRV_WARN_EVERYTHING=0
-DBUILD_SHARED_LIBS=OFF
-DLLVM_VERSION_SUFFIX=dxc
-C "${S}/cmake/caches/PredefinedParams.cmake"
)
cmake_src_configure
}
src_install() {
cmake_src_install
cat > "99${PN}" <<-EOF
LDPATH="${EPREFIX}/usr/lib/llvm/dxc/lib"
EOF
doenvd "99${PN}"
dosym -r /usr/lib/llvm/dxc/bin/dxc /usr/bin/dxc
}
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