llvm-runtimes/libgcc: Add 21.0.0_pre20250215 snapshot

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

2 files changed, 156 insertions, 0 deletions

diff --git a/llvm-runtimes/libgcc/Manifest b/llvm-runtimes/libgcc/Manifest
index c8d4e2dd9700..34c45304addf 100644
--- a/llvm-runtimes/libgcc/Manifest
+++ b/llvm-runtimes/libgcc/Manifest
@@ -3,3 +3,4 @@ DIST llvm-project-19.1.7.src.tar.xz.sig 438 BLAKE2B 4015140f4ba77de45039bdbdfbaf
 DIST llvm-project-20.1.0-rc2.src.tar.xz 147160684 BLAKE2B 6adc1226f022272d78fb0ed361c190d369a2afc53bf868409fe8f4e092d5ffb9894c71870f072bb68162610782f48088468b4a49cdb1bc731d6689c791a5b5e3 SHA512 f303deaec8f25e1b122a7e85df192b6ea10c51472b78a3d14ad9d0b976a533cfbb9164aff0bc99e447e30938cf43363552c5493b4693e1f23291ea7a9b824bbb
 DIST llvm-project-20.1.0-rc2.src.tar.xz.sig 566 BLAKE2B aa91f7be228e51b0f2234bb5e0df173e3ddc90b6db4350a9008c2f8ba53220da6eef0c69778aecac3caecf918a0c54a0d910177ffe7643ad7fc5624a97262b7f SHA512 e5563a8a79b5e9ef26d62dc6d4385c1c86d12a652b4b1e7fc9ce45a2ea66e5118112746a61b439823bf99d65aea82285eabf5e07714eec77e6e5cd02feab82ce
 DIST llvm-project-2cd8207b26ea4269630feba661f68554d7ae3c15.tar.gz 227261597 BLAKE2B 51ce992b651fcf08b7fd520420040803b59f1260947953325400c50bec576c418b162d8ae2d2307e70b885b1185c302a97409bcfe48cdb14b8e1384f4e2dfa9e SHA512 a41749943508ea4a18b47c4e947917b5268544e64372c0c3347f9ab8172a2c229d8b1d813d1e842be1b98aedd624524857ed3bb23fe98ad5f36e7a71581abb4b
+DIST llvm-project-c30a7f459452d5766da244564bc1d5888346c364.tar.gz 227560986 BLAKE2B c1c833aa6d488530826d96db81ca8be2fcf842ccf5b10a65ff18269fdfa32fa2742fb0a547eb315c2a9ee383e1b6b6cce4a78136e1740e04d322c79fb6a66a86 SHA512 0b68d3462e5eac89f50cff5e64603758ab74c701ff2de88c8569dd45b7e702b5d13b26c2745615c0c355d46d13765f47e4d43e61cde735240c6f386c0090becb
diff --git a/llvm-runtimes/libgcc/libgcc-21.0.0_pre20250215.ebuild b/llvm-runtimes/libgcc/libgcc-21.0.0_pre20250215.ebuild
new file mode 100644
index 000000000000..c1ca1f41c22a
--- /dev/null
+++ b/llvm-runtimes/libgcc/libgcc-21.0.0_pre20250215.ebuild
@@ -0,0 +1,155 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..13} )
+
+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? (
+		${PYTHON_DEPS}
+	)
+"
+
+LLVM_COMPONENTS=( compiler-rt cmake llvm/cmake llvm-libgcc )
+LLVM_TEST_COMPONENTS=( llvm/include/llvm/TargetParser )
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version ">=dev-python/lit-15[${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=${CTARGET} strip-unsupported-flags
+		# overrides host docs otherwise
+		DOCS=()
+	fi
+	python-any-r1_pkg_setup
+}
+
+src_configure() {
+	# We need to build a separate copy of compiler-rt, because we need to disable the
+	# COMPILER_RT_BUILTINS_HIDE_SYMBOLS option - compatibility with libgcc requires
+	# visibility of all symbols.
+
+	llvm_prepend_path "${LLVM_MAJOR}"
+
+	# 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/${LLVM_MAJOR}"
+
+		-DCOMPILER_RT_INCLUDE_TESTS=$(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/${LLVM_MAJOR}/bin/clang++"
+		)
+	fi
+
+	cmake_src_configure
+}
+
+src_compile() {
+	cmake_src_compile
+
+	local rtlib=$(
+		"${CC}" -rtlib=compiler-rt -resource-dir="${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
+	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
+	dolib.a libgcc.a
+	dosym libgcc_s.so.1.0 "/usr/${libdir}/libgcc_s.so.1"
+	dosym libgcc_s.so.1 "/usr/${libdir}/libgcc_s.so"
+	dosym libunwind.a "/usr/${libdir}/libgcc_eh.a"
+}