llvm-runtimes/libgcc: Add 21.1.0_rc3

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

2 files changed, 177 insertions, 0 deletions

diff --git a/llvm-runtimes/libgcc/Manifest b/llvm-runtimes/libgcc/Manifest
index 4abfec7d21eb..3bdf6b204b03 100644
--- a/llvm-runtimes/libgcc/Manifest
+++ b/llvm-runtimes/libgcc/Manifest
@@ -7,5 +7,7 @@ DIST llvm-project-20.1.8.src.tar.xz 147242952 BLAKE2B 7657ac0b26acc5affb1bfc91b9
 DIST llvm-project-20.1.8.src.tar.xz.sig 566 BLAKE2B 85beedfcff1195a974fab2c667b9efd4b715b3480c1b44b1b887fe32c69f72aca0d3b8fb276c03b6cc5a866622f669047aeee5ccb976640b4008ccd31dce77a4 SHA512 d74369bdb4d1b82775161ea53c9c5f3a23ce810f4df5ff617123023f9d8ce720e7d6ecc9e17f8ebd39fd9e7a9de79560abdf2ffe73bcb907a43148d43665d619
 DIST llvm-project-21.1.0-rc2.src.tar.xz 158947868 BLAKE2B 8de20b0bf5219de12240561c3049de09a3253e1ebe33f84533d3f1f2ee9794b09fe2b6aca0b2fb15542b37b901be7bd3e00306cfd266ab59e2703046bcbcaf3d SHA512 0599cbe3d11d9135c355d5c60fdfda98a9689768f41baba0b8981769cc836eba8d226364d601031413c5f43ae1c4dda080ab910d60c983367b438fa32903d173
 DIST llvm-project-21.1.0-rc2.src.tar.xz.sig 438 BLAKE2B 7090c7a98e01e7bf600e4fbb23ad28d2e3bd8e72938863b59c7be8be0de2e1b3e3e2a981955165b833a95992ee086fd525919af7bcd7761073800486b3be3363 SHA512 dbe6cdd544b84d18b51f187e612de8ec05eeb9f1b462b7c4921697aaf6c6b0a00a6f4d3cf320a61cf57a886f11d47049bb5fa817f8bf835991a01b5e4a2d8c0a
+DIST llvm-project-21.1.0-rc3.src.tar.xz 158924056 BLAKE2B 5f3f46a499120c810a944361468cdea64cc29fa41a1c1f4549b1a845e6a36c891cd4af0a9fafda00663f73de61ef2658bf0640b68020cdebb7cb8446ba1cbf09 SHA512 3b84b2c9d8b164983890f797301591b5e20a54adc035b196db9a7f6a19e6ac13fe24d1c7816fe62ac87f853e5b4b9decf177046c43caed8e62ab8e8df574a2ef
+DIST llvm-project-21.1.0-rc3.src.tar.xz.sig 438 BLAKE2B 1a339fe00c27cddc508b369c4007e501266df42fbe0f448df3eecbf853ffa2915a6beef26e69c38169d37c12edcf60ac7c8ca5c0ae671b4c593356ccc6f3e3d5 SHA512 df8b3f747858fbb8c662899e6ea792556405cee2318be125a04e7b94c6dcebbed3ff01890f5e0c52e13b251243cfd1194806cf5ef52b482ae67d68be585574ad
 DIST llvm-project-92164faf17d553359418b9f49c1a41d680d0de49.tar.gz 245033829 BLAKE2B 7bf707e6455259417864a40c53beba4c4a9f6e4cf983671075016b95e537d2c249f97444089734718b5f2c989a2614028bd22142ccadae9c382e66b28758ecab SHA512 bf4105173144e6bb9cdc99ae67b7350228b37eae248c15aae2ce29877a8ee4cb76781a6beff366961fa366d31683b43421d684d019e25f0280735ccd6c22a432
 DIST llvm-project-b075dadbd3e0e928bdeddb3d36af64e8a383e305.tar.gz 244584834 BLAKE2B e6924d5fcc90431bdf859c3d728e44c348fa8ec336967c95fa9d253519c7bf9b3b200048ff8910eea78e5481a11704330ad72960fe753930036f75bca5b163b7 SHA512 80232cd00a2981392cf9fb22daceb164f965d5d5c9edb431226713a5e2f75ba5aaf747329ae5f4b852fd5e7f0be62ad978529080b4dce1bac7af480905b61c3b
diff --git a/llvm-runtimes/libgcc/libgcc-21.1.0_rc3.ebuild b/llvm-runtimes/libgcc/libgcc-21.1.0_rc3.ebuild
new file mode 100644
index 000000000000..52833f54b8a8
--- /dev/null
+++ b/llvm-runtimes/libgcc/libgcc-21.1.0_rc3.ebuild
@@ -0,0 +1,175 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{11..14} )
+
+inherit cmake crossdev flag-o-matic llvm.org llvm-utils python-any-r1
+inherit toolchain-funcs
+
+DESCRIPTION="Compiler runtime library for clang, compatible with libgcc_s"
+HOMEPAGE="https://llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="0"
+IUSE="debug test"
+
+DEPEND="
+	~llvm-runtimes/libunwind-${PV}[static-libs]
+"
+RDEPEND="
+	${DEPEND}
+	!sys-devel/gcc
+"
+BDEPEND="
+	llvm-core/clang:${LLVM_MAJOR}
+	test? (
+		$(python_gen_any_dep ">=dev-python/lit-15[\${PYTHON_USEDEP}]")
+		=llvm-core/clang-${LLVM_VERSION}*:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+"
+
+LLVM_COMPONENTS=( compiler-rt cmake llvm/cmake llvm-libgcc third-party/siphash )
+LLVM_TEST_COMPONENTS=( llvm/include/llvm/TargetParser )
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version ">=dev-python/lit-15[${PYTHON_USEDEP}]"
+}
+
+pkg_setup() {
+	if target_is_not_host || tc-is-cross-compiler ; then
+		# strips vars like CFLAGS="-march=x86_64-v3" for non-x86 architectures
+		CHOST=${CTARGET} strip-unsupported-flags
+		# overrides host docs otherwise
+		DOCS=()
+	fi
+	python-any-r1_pkg_setup
+}
+
+src_configure() {
+	# We need to build a separate copy of compiler-rt, because we need to disable the
+	# COMPILER_RT_BUILTINS_HIDE_SYMBOLS option - compatibility with libgcc requires
+	# visibility of all symbols.
+
+	if use clang || use test; then
+		llvm_prepend_path -b "${LLVM_MAJOR}"
+	fi
+
+	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+	use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+
+	export CC=${CTARGET}-clang CXX=${CTARGET}-clang++
+	strip-unsupported-flags
+
+	local mycmakeargs=(
+		-DCOMPILER_RT_INSTALL_PATH="${EPREFIX}/usr/lib/clang/${LLVM_MAJOR}"
+		-DLLVM_ROOT="${ESYSROOT}/usr/lib/llvm/${LLVM_MAJOR}"
+
+		-DCOMPILER_RT_INCLUDE_TESTS=$(usex test)
+		-DCOMPILER_RT_BUILD_CRT=OFF
+		-DCOMPILER_RT_BUILD_CTX_PROFILE=OFF
+		-DCOMPILER_RT_BUILD_LIBFUZZER=OFF
+		-DCOMPILER_RT_BUILD_MEMPROF=OFF
+		-DCOMPILER_RT_BUILD_ORC=OFF
+		-DCOMPILER_RT_BUILD_PROFILE=OFF
+		-DCOMPILER_RT_BUILD_SANITIZERS=OFF
+		-DCOMPILER_RT_BUILD_XRAY=OFF
+
+		-DCOMPILER_RT_BUILTINS_HIDE_SYMBOLS=OFF
+
+		-DPython3_EXECUTABLE="${PYTHON}"
+	)
+
+	# disable building non-native runtimes since we don't do multilib
+	if use amd64; then
+		mycmakeargs+=(
+			-DCAN_TARGET_i386=OFF
+		)
+	fi
+
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+
+			-DCOMPILER_RT_TEST_COMPILER="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/bin/clang"
+			-DCOMPILER_RT_TEST_CXX_COMPILER="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/bin/clang++"
+		)
+	fi
+
+	cmake_src_configure
+}
+
+# Usage: deps
+gen_ldscript() {
+	local output_format
+	output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
+	[[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
+
+	cat <<-END_LDSCRIPT
+/* GNU ld script
+   Include missing dependencies
+*/
+${output_format}
+GROUP ( $@ )
+END_LDSCRIPT
+}
+
+src_compile() {
+	cmake_src_compile
+
+	local rtlib=$(
+		"${CC}" -rtlib=compiler-rt -resource-dir="${BUILD_DIR}" \
+			-print-libgcc-file-name || die
+	)
+
+	# Use the llvm-libgcc's version script to produce libgcc.{a,so}, which
+	# combines compiler-rt and libunwind into a libgcc replacement.
+	#
+	# What we do here is similar to what upstream does[0], with the following
+	# differences:
+	#
+	# * We build the local copy of compiler-rt manually, to have a full control
+	#   over CMake options.
+	# * Upstream links the locally built copy of libunwind statically. We link the
+	#   system-wide libunwind dynamically.
+	#
+	# [0] https://github.com/llvm/llvm-project/blob/llvmorg-19.1.7/llvm-libgcc/CMakeLists.txt#L102-L120
+	"${CC}" -E -xc \
+		"${WORKDIR}/llvm-libgcc/gcc_s.ver.in" \
+		-o gcc_s.ver || die
+	"${CC}" -nostdlib \
+		${LDFLAGS} \
+		-Wl,--version-script,gcc_s.ver \
+		-Wl,--undefined-version \
+		-Wl,--whole-archive \
+		"${rtlib}" \
+		-Wl,-soname,libgcc_s.so.1.0 \
+		-lc -lunwind -shared \
+		-o libgcc_s.so.1.0 || die
+	# Generate libgcc_s.so ldscript for inclusion of libunwind as a
+	# dependency so that `clang -lgcc_s` works out of the box.
+	gen_ldscript libgcc_s.so.1.0 libunwind.so.1.0 > libgcc_s.so || die
+	cp "${rtlib}" libgcc.a || die
+}
+
+src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+
+	cmake_build check-builtins
+}
+
+src_install() {
+	local libdir=$(get_libdir)
+	dolib.so libgcc_s.so.1.0 libgcc_s.so
+	dolib.a libgcc.a
+	dosym libgcc_s.so.1.0 "/usr/${libdir}/libgcc_s.so.1"
+	dosym libunwind.a "/usr/${libdir}/libgcc_eh.a"
+}