sys-libs/libomp: Add 19.0.0_pre20240504 snapshot

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

sys-libs/libomp/Manifest

@@ -10,3 +10,4 @@ DIST llvm-project-18.1.4.src.tar.xz.sig 566 BLAKE2B b74fd219d7bcdf197b4e711cfbb2
 DIST llvm-project-18.1.5.src.tar.xz 132061072 BLAKE2B bfdd987d5992a4d94ae8b14792df3be67a8e8fdf1daef9834cdaa2132df1b7ddb72ba0aabbb34b171a73d0f3b2b0f61e7160f0b278a67fd4850e3f501fd21531 SHA512 9e2f1e251b3754a24a0b39676d78c98692887c05c85cf0bee50fd44d9635290019930d4dabd1ff4ba3c9c1067e7e0e09aa1bbcd3d76687f919a1d44ba85eee20
 DIST llvm-project-18.1.5.src.tar.xz.sig 566 BLAKE2B ad935db71ec3b9fc885d696af440764a71fe7cafc5b3ca0b25a2963100d9cb3790392daebcac1341716c95a8da3c6243f5a8667fea1ed18b93fc8baa495414c9 SHA512 3cbca1059d940f3bd7bd72d68f2828039b66304980cc5f43769649e5494fc7d71117bf8aba5cc7f7a2ffca52f60ba30fadf3b28f984fd49ddb14300e30b45237
 DIST llvm-project-338561657685c1831a53563b1bc36ffc7470239e.tar.gz 209715501 BLAKE2B 49152479d4f2cae430e783784d0cfcc129134f5cc0bf12c72701cd15e59cb3e1be2f61385ba9baa93d1d1193e89374ac8877b909650c163b681d1fcd26732cdc SHA512 d34bbe82e85c5b9d493029ad7b46e802f06f7e7a8a48515d0043c58c3251271f8f3e1e11c47eb91bd3db2477f819d33b43ddebb276eb9601c5ad141e463c9682
+DIST llvm-project-76aa042dde6ba9ba57c680950f5818259ee02690.tar.gz 210235525 BLAKE2B fbbb8e70e0a08bde1fa2277746f692399fa15015b69693f5e8d3297abf02dfb7b36c535880f5c6924c870652dd3106936776d57c34b22234a5419f75b3561bb7 SHA512 9107551ceb2b28aa735006144b3344801ea861d7b49eae4881831af507314fb8da2bf5e8a3a407aeebd2eee01fbfad2ca90269d2331fe43cca5c2cc49dd257b7

sys-libs/libomp/libomp-19.0.0_pre20240504.ebuild

@@ -0,0 +1,88 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..12} )
+inherit flag-o-matic cmake-multilib linux-info llvm.org python-single-r1
+
+DESCRIPTION="OpenMP runtime library for LLVM/clang compiler"
+HOMEPAGE="https://openmp.llvm.org"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="0/${LLVM_SOABI}"
+IUSE="+debug gdb-plugin hwloc ompt test"
+REQUIRED_USE="
+	gdb-plugin? ( ${PYTHON_REQUIRED_USE} )
+"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	gdb-plugin? ( ${PYTHON_DEPS} )
+	hwloc? ( >=sys-apps/hwloc-2.5:0=[${MULTILIB_USEDEP}] )
+"
+# tests:
+# - dev-python/lit provides the test runner
+# - sys-devel/llvm provide test utils (e.g. FileCheck)
+# - sys-devel/clang provides the compiler to run tests
+DEPEND="
+	${RDEPEND}
+"
+BDEPEND="
+	dev-lang/perl
+	test? (
+		${PYTHON_DEPS}
+		$(python_gen_cond_dep '
+			dev-python/lit[${PYTHON_USEDEP}]
+		')
+		sys-devel/clang
+	)
+"
+
+LLVM_COMPONENTS=( openmp cmake llvm/include )
+llvm.org_set_globals
+
+pkg_setup() {
+	if use gdb-plugin || use test; then
+		python-single-r1_pkg_setup
+	fi
+}
+
+multilib_src_configure() {
+	# LTO causes issues in other packages building, #870127
+	filter-lto
+
+	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+	use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+
+	local libdir="$(get_libdir)"
+	local mycmakeargs=(
+		-DOPENMP_LIBDIR_SUFFIX="${libdir#lib}"
+
+		-DLIBOMP_USE_HWLOC=$(usex hwloc)
+		-DLIBOMP_OMPD_GDB_SUPPORT=$(multilib_native_usex gdb-plugin)
+		-DLIBOMP_OMPT_SUPPORT=$(usex ompt)
+
+		# do not install libgomp.so & libiomp5.so aliases
+		-DLIBOMP_INSTALL_ALIASES=OFF
+		# disable unnecessary hack copying stuff back to srcdir
+		-DLIBOMP_COPY_EXPORTS=OFF
+	)
+
+	use test && mycmakeargs+=(
+		# this project does not use standard LLVM cmake macros
+		-DOPENMP_LLVM_LIT_EXECUTABLE="${EPREFIX}/usr/bin/lit"
+		-DOPENMP_LIT_ARGS="$(get_lit_flags)"
+
+		-DOPENMP_TEST_C_COMPILER="$(type -P "${CHOST}-clang")"
+		-DOPENMP_TEST_CXX_COMPILER="$(type -P "${CHOST}-clang++")"
+	)
+	cmake_src_configure
+}
+
+multilib_src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+
+	cmake_build check-libomp
+}