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# Copyright 1999-2020 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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EAPI=7
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CMAKE_ECLASS=cmake
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inherit cmake-multilib flag-o-matic llvm
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DESCRIPTION="LLVM-based OpenCL compiler targetting Intel Gen graphics hardware"
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HOMEPAGE="https://github.com/intel/intel-graphics-compiler"
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SRC_URI="https://github.com/intel/${PN}/archive/igc-${PV}.tar.gz -> ${P}.tar.gz"
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LICENSE="MIT"
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SLOT="0"
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KEYWORDS="amd64"
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IUSE="debug"
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LLVM_MAX_SLOT=10
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COMMON="<=sys-devel/llvm-${LLVM_MAX_SLOT}.9999:=[${MULTILIB_USEDEP}]
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<=dev-libs/opencl-clang-${LLVM_MAX_SLOT}.9999:=[${MULTILIB_USEDEP}]"
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DEPEND="${COMMON}"
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RDEPEND="${COMMON}"
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PATCHES=(
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"${FILESDIR}"/${PN}-1.0.9-no_Werror.patch
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"${FILESDIR}"/${PN}-1.0.4111-opencl-clang_version.patch
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)
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S="${WORKDIR}"/${PN}-igc-${PV}
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pkg_pretend() {
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if [[ ${MERGE_TYPE} != binary ]]; then
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if tc-is-clang && [[ $(clang-major-version) -ge 10 ]] ; then
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die "Building IGC with clang-10 and newer is presently not supported (see Bug #738934). Please use clang-9 or gcc instead."
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fi
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fi
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}
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multilib_src_configure() {
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# Select the same slot as the best opencl-clang
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local ocl_clang_ver="$(best_version -d dev-libs/opencl-clang:=)"
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einfo "Selecting $ocl_clang_ver"
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local llvm_slot=$(ver_cut 5 $ocl_clang_ver)
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# opencl-clang brings the right slot as dep
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has_version -d sys-devel/llvm:$llvm_slot || die "LLVM slot matching $ocl_clang_ver not found ($llvm_slot)"
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einfo "Selecting LLVM SLOT $llvm_slot: $(best_version -d sys-devel/llvm:$llvm_slot)"
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# Since late March 2020 cmake.eclass does not set -DNDEBUG any more, and the way
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# IGC uses this definition causes problems for some users (see Bug #718824).
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use debug || append-cppflags -DNDEBUG
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local mycmakeargs=(
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-DCCLANG_SONAME_VERSION=${llvm_slot}
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-DCMAKE_LIBRARY_PATH=$(get_llvm_prefix ${llvm_slot})/$(get_libdir)
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-DIGC_OPTION__FORCE_SYSTEM_LLVM=ON
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-DIGC_PREFERRED_LLVM_VERSION=${llvm_slot}
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)
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cmake_src_configure
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}
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