llvm-core/clang-runtime: Try collapsing 22* to a single version

Signed-off-by: Michał Górny <mgorny@gentoo.org>
Part-of: https://github.com/gentoo/gentoo/pull/42663
Signed-off-by: Michał Górny <mgorny@gentoo.org>

1 files changed, 126 insertions, 0 deletions

diff --git a/llvm-core/clang-runtime/clang-runtime-22.ebuild b/llvm-core/clang-runtime/clang-runtime-22.ebuild
new file mode 100644
index 000000000000..cf3f113b332b
--- /dev/null
+++ b/llvm-core/clang-runtime/clang-runtime-22.ebuild
@@ -0,0 +1,126 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit multilib multilib-build
+
+DESCRIPTION="Meta-ebuild for clang runtime libraries"
+HOMEPAGE="https://clang.llvm.org/"
+S=${WORKDIR}
+
+LICENSE="metapackage"
+SLOT="${PV}"
+IUSE="
+	+compiler-rt libcxx offload openmp +sanitize
+	default-compiler-rt default-libcxx default-lld llvm-libunwind polly
+"
+REQUIRED_USE="
+	sanitize? ( compiler-rt )
+"
+
+RDEPEND="
+	compiler-rt? (
+		>=llvm-runtimes/compiler-rt-${PV}:${SLOT}[abi_x86_32(+)?,abi_x86_64(+)?]
+		sanitize? (
+			>=llvm-runtimes/compiler-rt-sanitizers-${PV}:${SLOT}[abi_x86_32(+)?,abi_x86_64(+)?]
+		)
+	)
+	libcxx? ( >=llvm-runtimes/libcxx-${PV}[${MULTILIB_USEDEP}] )
+	openmp? (
+		>=llvm-runtimes/openmp-${PV}[${MULTILIB_USEDEP}]
+		offload? (
+			>=llvm-runtimes/offload-${PV}
+		)
+	)
+
+	llvm-core/clang-common
+
+	~llvm-core/clang-linker-config-${SLOT}[default-lld(-)?]
+	~llvm-runtimes/clang-rtlib-config-${SLOT}[default-compiler-rt(-)?]
+	~llvm-runtimes/clang-unwindlib-config-${SLOT}[default-compiler-rt(-)?,llvm-libunwind(-)?]
+	~llvm-runtimes/clang-stdlib-config-${SLOT}[default-libcxx(-)?]
+
+	polly? ( >=llvm-core/polly-${PV}:${SLOT} )
+"
+
+_doclang_cfg() {
+	local triple="${1}"
+
+	local tool
+	for tool in ${triple}-clang{,++,-cpp}; do
+		newins - "${tool}.cfg" <<-EOF
+			# This configuration file is used by ${tool} driver.
+			@../${tool}.cfg
+			@gentoo-plugins.cfg
+			@gentoo-runtimes.cfg
+		EOF
+	done
+
+	# Install symlinks for triples with other vendor strings since some
+	# programs insist on mangling the triple.
+	local vendor
+	for vendor in gentoo pc unknown; do
+		local vendor_triple="${triple%%-*}-${vendor}-${triple#*-*-}"
+		for tool in clang{,++,-cpp}; do
+			if [[ ! -f "${ED}/etc/clang/${SLOT}/${vendor_triple}-${tool}.cfg" ]]; then
+				dosym "${triple}-${tool}.cfg" "/etc/clang/${SLOT}/${vendor_triple}-${tool}.cfg"
+			fi
+		done
+	done
+}
+
+doclang_cfg() {
+	local triple=$(get_abi_CHOST "${abi}")
+
+	_doclang_cfg ${triple}
+
+	# LLVM may have different arch names in some cases. For example in x86
+	# profiles the triple uses i686, but llvm will prefer i386 if invoked
+	# with "clang" on x86 or "clang -m32" on x86_64. The gentoo triple will
+	# be used if invoked through ${CHOST}-clang{,++,-cpp} though.
+	#
+	# To make sure the correct triples are installed,
+	# see Triple::getArchTypeName() in llvm/lib/TargetParser/Triple.cpp
+	# and compare with CHOST values in profiles.
+
+	local abi=${triple%%-*}
+	case ${abi} in
+		armv4l|armv4t|armv5tel|armv6j|armv7a)
+			_doclang_cfg ${triple/${abi}/arm}
+			;;
+		i686)
+			_doclang_cfg ${triple/${abi}/i386}
+			;;
+		sparc)
+			_doclang_cfg ${triple/${abi}/sparcel}
+			;;
+		sparc64)
+			_doclang_cfg ${triple/${abi}/sparcv9}
+			;;
+	esac
+}
+
+src_install() {
+	insinto "/etc/clang/${SLOT}"
+	newins - gentoo-runtimes.cfg <<-EOF
+		# This file is initially generated by llvm-core/clang-runtime.
+		# It is used to control the default runtimes using by clang.
+
+		@gentoo-rtlib.cfg
+		@gentoo-unwindlib.cfg
+		@gentoo-stdlib.cfg
+		@gentoo-linker.cfg
+	EOF
+	newins - gentoo-plugins.cfg <<-EOF
+		# This file is used to load optional LLVM plugins.
+	EOF
+	if use polly; then
+		cat >> "${ED}/etc/clang/${SLOT}/gentoo-plugins.cfg" <<-EOF || die
+			-fpass-plugin=LLVMPolly.so
+			-fplugin=LLVMPolly.so
+		EOF
+	fi
+
+	multilib_foreach_abi doclang_cfg
+}