dev-libs/libclc: Add 18.x live ebuilds

Signed-off-by: Michał Górny <mgorny@gentoo.org>

dev-libs/libclc/libclc-18.0.0.9999.ebuild

@@ -0,0 +1,88 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..12} )
+inherit cmake llvm llvm.org python-any-r1
+
+DESCRIPTION="OpenCL C library"
+HOMEPAGE="https://libclc.llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( MIT BSD )"
+SLOT="0"
+KEYWORDS=""
+IUSE="+spirv video_cards_nvidia video_cards_r600 video_cards_radeonsi"
+
+LLVM_MAX_SLOT=17
+BDEPEND="
+	${PYTHON_DEPS}
+	|| (
+		(
+			sys-devel/clang:17
+			spirv? ( dev-util/spirv-llvm-translator:17 )
+		)
+		(
+			sys-devel/clang:16
+			spirv? ( dev-util/spirv-llvm-translator:16 )
+		)
+		(
+			sys-devel/clang:15
+			spirv? ( dev-util/spirv-llvm-translator:15 )
+		)
+		(
+			sys-devel/clang:14
+			spirv? ( dev-util/spirv-llvm-translator:14 )
+		)
+		(
+			sys-devel/clang:13
+			spirv? ( dev-util/spirv-llvm-translator:13 )
+		)
+	)
+"
+
+LLVM_COMPONENTS=( libclc )
+llvm.org_set_globals
+
+llvm_check_deps() {
+	if use spirv; then
+		has_version -b "dev-util/spirv-llvm-translator:${LLVM_SLOT}" ||
+			return 1
+	fi
+	has_version -b "sys-devel/clang:${LLVM_SLOT}"
+}
+
+pkg_setup() {
+	llvm_pkg_setup
+	python-any-r1_pkg_setup
+}
+
+src_configure() {
+	local libclc_targets=()
+
+	use spirv && libclc_targets+=(
+		"spirv-mesa3d-"
+		"spirv64-mesa3d-"
+	)
+	use video_cards_nvidia && libclc_targets+=(
+		"nvptx--"
+		"nvptx64--"
+		"nvptx--nvidiacl"
+		"nvptx64--nvidiacl"
+	)
+	use video_cards_r600 && libclc_targets+=(
+		"r600--"
+	)
+	use video_cards_radeonsi && libclc_targets+=(
+		"amdgcn--"
+		"amdgcn-mesa-mesa3d"
+		"amdgcn--amdhsa"
+	)
+	[[ ${#libclc_targets[@]} ]] || die "libclc target missing!"
+
+	libclc_targets=${libclc_targets[*]}
+	local mycmakeargs=(
+		-DLIBCLC_TARGETS_TO_BUILD="${libclc_targets// /;}"
+	)
+	cmake_src_configure
+}