gentoo-overlay/dev-libs/level-zero/level-zero-0.91.10.ebuild

# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

inherit cmake flag-o-matic

DESCRIPTION="oneAPI Level Zero headers, loader and validation layer"
HOMEPAGE="https://github.com/oneapi-src/level-zero"
SRC_URI="https://github.com/oneapi-src/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"

LICENSE="MIT"
SLOT="0"
KEYWORDS="~amd64"
IUSE="test"

DEPEND="dev-util/opencl-headers"

RESTRICT="!test? ( test )"

pkg_pretend() {
	if [[ ${MERGE_TYPE} != binary ]]; then
		if ! test-flag-CXX -std=c++14; then
			eerror "${P} requires C++14-capable C++ compiler. Your current compiler"
			eerror "does not seem to support -std=c++14 option. Please upgrade your compiler"
			eerror "to gcc-4.9 or an equivalent version supporting C++14."
			die "Currently active compiler does not support -std=c++14"
		fi
	fi
}

src_prepare() {
	cmake_src_prepare
	# According to upstream, release tarballs should contain this file
	# - but at least some of them do not. Fortunately it is trivial
	# to make one ourselves.
	echo "$(ver_cut 3)" > "${S}"/VERSION_PATCH || die "Failed to seed the version file"
}

src_configure() {
	local mycmakeargs=(
		-Dlevel-zero_BUILD_TESTS=$(usex test)
		-DOpenCL_INCLUDE_DIR="${EPREFIX}/usr/include"
	)
	cmake_src_configure
}