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