sys-libs/llvm-libunwind: Add 20.0.0_pre20240910 snapshot

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

2 files changed, 129 insertions, 0 deletions

diff --git a/sys-libs/llvm-libunwind/Manifest b/sys-libs/llvm-libunwind/Manifest
index a1930a7c39a5..f76a426aa2cc 100644
--- a/sys-libs/llvm-libunwind/Manifest
+++ b/sys-libs/llvm-libunwind/Manifest
@@ -9,3 +9,4 @@ DIST llvm-project-18.1.8.src.tar.xz.sig 566 BLAKE2B 6ab0efc5b38d4483f4e32e8b8577
 DIST llvm-project-19.1.0-rc4.src.tar.xz 141255904 BLAKE2B c693dc94aeb4b59ad4a05a426037075449535c398cbc1ae9b4371d42ea0962b267a3be8af93f4fe47b21c11964fbea6e8eb662225e6f79b20bbc35e706588435 SHA512 826978a596b26040124f2ceba858f91031f78faca22f32de2eea1a4d299a849dcb1fffdfb01601adc39d733dd0cdee43b21af05159d45dcebc842f6b6b540ba8
 DIST llvm-project-19.1.0-rc4.src.tar.xz.sig 438 BLAKE2B aef02737285d2faa1b21cec1a32fff6e776ac4bb5c4fd6f26d3d1a9b9244ed1fc0a1eb786a444a6549dda8683485f67964b4d4e48393e1780e7938ee0d94348a SHA512 5b9dcbf232229fdd87824bc87d0ad4ebd54127c9288708fb3304166422d378b77a843d7c5d8258850a0de59310c24e65042d636a5314e2af8513627a43bdb6e8
 DIST llvm-project-5500e21942f7047344b6fee62d3e08c0ba2f9182.tar.gz 219148250 BLAKE2B 61880a13086c46ac9a9f8326b1e007146afb1662a0a223703fe36a91da230d5708b368f1177e76ac13c1e5a30f620c4ce6346484a0a67a0f011a816bba4d13f9 SHA512 a6d4fcae960b450be2abd2da485cea638b73290b17ceeabf560651d614f55925f86ee6f76a116262d8a1ff70ba699468cb4cf4c32015e26540ba6e47c58db1b7
+DIST llvm-project-bece0d7517bd0a036dc8a319514e4a8a5c497dee.tar.gz 218241938 BLAKE2B 7ac08a21ab2899823683dc700bd2f6226e22653f5be553fe0278868f9fa0d8946fabe6aae40f68cfd14e019b1a3795affb64bf41ebcc949394b73a90e7cd019c SHA512 8893512dcbc1171d2c91aeb0aa9e5fd424474c4d6b5215fb1a078dc8757ab2d404b55ed90709e09368e0794c8306f489be8339d5c502dd6c2ef1852e24636e85
diff --git a/sys-libs/llvm-libunwind/llvm-libunwind-20.0.0_pre20240910.ebuild b/sys-libs/llvm-libunwind/llvm-libunwind-20.0.0_pre20240910.ebuild
new file mode 100644
index 000000000000..e4c76c15ebc8
--- /dev/null
+++ b/sys-libs/llvm-libunwind/llvm-libunwind-20.0.0_pre20240910.ebuild
@@ -0,0 +1,128 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..13} )
+inherit cmake-multilib flag-o-matic llvm.org llvm-utils python-any-r1
+inherit toolchain-funcs
+
+DESCRIPTION="C++ runtime stack unwinder from LLVM"
+HOMEPAGE="https://llvm.org/docs/ExceptionHandling.html"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="0"
+IUSE="+clang +debug static-libs test"
+REQUIRED_USE="test? ( clang )"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	!sys-libs/libunwind
+"
+DEPEND="
+	sys-devel/llvm:${LLVM_MAJOR}
+"
+BDEPEND="
+	clang? (
+		sys-devel/clang:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+	test? (
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+	)
+"
+
+LLVM_COMPONENTS=( runtimes libunwind libcxx llvm/cmake cmake )
+LLVM_TEST_COMPONENTS=( libcxxabi llvm/utils/llvm-lit )
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+multilib_src_configure() {
+	llvm_prepend_path "${LLVM_MAJOR}"
+
+	local libdir=$(get_libdir)
+
+	# https://github.com/llvm/llvm-project/issues/56825
+	# also separately bug #863917
+	filter-lto
+
+	if use clang; then
+		local -x CC=${CHOST}-clang
+		local -x CXX=${CHOST}-clang++
+		strip-unsupported-flags
+	fi
+
+	# link to compiler-rt
+	# https://github.com/gentoo/gentoo/pull/21516
+	local use_compiler_rt=OFF
+	[[ $(tc-get-c-rtlib) == compiler-rt ]] && use_compiler_rt=ON
+
+	# Respect upstream build type assumptions (bug #910436) where they do:
+	# -DLIBUNWIND_ENABLE_ASSERTIONS=ON =>
+	#       -DCMAKE_BUILD_TYPE=DEBUG  => -UNDEBUG
+	#       -DCMAKE_BUILD_TYPE!=debug => -DNDEBUG
+	# -DLIBUNWIND_ENABLE_ASSERTIONS=OFF =>
+	#       -UNDEBUG
+	# See also https://github.com/llvm/llvm-project/issues/86#issuecomment-1649668826.
+	use debug || append-cppflags -DNDEBUG
+
+	local mycmakeargs=(
+		-DCMAKE_CXX_COMPILER_TARGET="${CHOST}"
+		-DPython3_EXECUTABLE="${PYTHON}"
+		-DLLVM_ENABLE_RUNTIMES="libunwind"
+		-DLLVM_LIBDIR_SUFFIX=${libdir#lib}
+		-DLLVM_INCLUDE_TESTS=OFF
+		-DLIBUNWIND_ENABLE_ASSERTIONS=$(usex debug)
+		-DLIBUNWIND_ENABLE_STATIC=$(usex static-libs)
+		-DLIBUNWIND_INCLUDE_TESTS=$(usex test)
+		-DLIBUNWIND_INSTALL_HEADERS=ON
+
+		# support non-native unwinding; given it's small enough,
+		# enable it unconditionally
+		-DLIBUNWIND_ENABLE_CROSS_UNWINDING=ON
+
+		# avoid dependency on libgcc_s if compiler-rt is used
+		-DLIBUNWIND_USE_COMPILER_RT=${use_compiler_rt}
+	)
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_ENABLE_RUNTIMES="libunwind;libcxxabi;libcxx"
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+			-DLIBUNWIND_LIBCXX_PATH="${WORKDIR}/libcxx"
+
+			-DLIBCXXABI_LIBDIR_SUFFIX=
+			-DLIBCXXABI_ENABLE_SHARED=OFF
+			-DLIBCXXABI_ENABLE_STATIC=ON
+			-DLIBCXXABI_USE_LLVM_UNWINDER=ON
+			-DLIBCXXABI_INCLUDE_TESTS=OFF
+
+			-DLIBCXX_LIBDIR_SUFFIX=
+			-DLIBCXX_ENABLE_SHARED=OFF
+			-DLIBCXX_ENABLE_STATIC=ON
+			-DLIBCXX_CXX_ABI=libcxxabi
+			-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
+			-DLIBCXX_HAS_MUSL_LIBC=$(usex elibc_musl)
+			-DLIBCXX_HAS_GCC_S_LIB=OFF
+			-DLIBCXX_INCLUDE_TESTS=OFF
+			-DLIBCXX_INCLUDE_BENCHMARKS=OFF
+		)
+	fi
+
+	cmake_src_configure
+}
+
+multilib_src_test() {
+	local -x LIT_PRESERVES_TMP=1
+	cmake_build check-unwind
+}
+
+multilib_src_install() {
+	DESTDIR=${D} cmake_build install-unwind
+}