dev-ml/llvm: Add 23.0.0_pre20260331 snapshot

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

dev-ml/llvm/Manifest

@@ -14,4 +14,5 @@ DIST llvm-project-22.1.0.src.tar.xz 167040408 BLAKE2B c5e9971dd17f4b0508b85c9f24
 DIST llvm-project-22.1.0.src.tar.xz.sig 119 BLAKE2B d3190d9dbacedf9de0c6b3d5c7711ae3c57dd4dc8cd136bc27fe4901253ffbd6d21060c046d7bf69d3a9489b5704ab5337e6d26da8236966c609b2d0eb54db97 SHA512 6145bf769640a9c6546cb63fa82450b2985ab74b2180a735f709ed909998cfbc6781116354b8b819cefa0e87cd11d470ecc64cd758b4a703aa10ee7880315f42
 DIST llvm-project-22.1.2.src.tar.xz 167026580 BLAKE2B f838277e2bb47c273e8c709940aff5e21b88ad8216a4c6813d783f6041ac4b624c954bedd4c572c117d308ccafedca80ea95fcd73675c00ebfa998057e522f7b SHA512 d5adfbb8e5026b845f8251f5f490b4646ccd2ecaf81a2b80091d1c71044f5c7726f2df6680a95589f2dedc614bdd9cdd88febcce6d5fc92f638f616d503b8066
 DIST llvm-project-22.1.2.src.tar.xz.sig 119 BLAKE2B 4ca084feb2d99ca6d763048244305408400fd9e1fb08a4314112d4d0318e4a2f3337858217c6d09fc136e0dd48f5bed7e88ecd3510116a3777dedec013f915f3 SHA512 dba272f935aa5ff3e93e538ac8877a79fdd3d2bf0efa61266c3caa85ac3aab167213a76759ed9531b539cdfd57c96a9c890807c4a04ba65a4d80b0c3dff044f2
+DIST llvm-project-af6521fb3a36149cd69d83bfdf87ed26e59a14a2.tar.gz 265801058 BLAKE2B 3bbaee50354a8c67f4ebfbcbd0ed5d8658af082602a821d1e6d716d0c2f2952c817d594a1d8f573f0b54176ad18b23742db07d6471c72cca6f1082038ea95419 SHA512 70d3b9f95a3a895450da1d77657108a70d4910f0d78c7310b340bed2a2571b0bf5631dee21e8b4c57ebfc756a9e44cc34c2b6a0ac5354a3d500fcfe198a25849
 DIST llvm-project-df9eb79970c012990e829d174d181d575d414efe.tar.gz 265149781 BLAKE2B ab7a87dad369685fc26a054c065dee6ef2754b6446d5a6e15ed7f5bb52d7d433b519cac0522063ba222600f6f40dc40f7bf27930c74031cc40fff5372308a097 SHA512 7c63bf1360902e6a55c7f4c15d08a716d54476875744e6f40ec51157de6c18bf75d8fdb921f26831017151e87649bd1a48041e007edd9a0afc5e9f9066bfd79d

dev-ml/llvm/llvm-23.0.0_pre20260331.ebuild

@@ -0,0 +1,107 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{11..14} )
+inherit cmake llvm.org llvm-utils python-any-r1
+
+DESCRIPTION="OCaml bindings for LLVM"
+HOMEPAGE="https://llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions UoI-NCSA"
+SLOT="0/${PV}"
+IUSE="+debug test"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	>=dev-lang/ocaml-4.00.0:0=
+	dev-ml/ocaml-ctypes:=
+	~llvm-core/llvm-${PV}:=[debug?]
+	!llvm-core/llvm[ocaml(-)]
+"
+
+DEPEND="
+	${RDEPEND}
+"
+BDEPEND="
+	${PYTHON_DEPS}
+	dev-lang/perl
+	dev-ml/findlib
+"
+
+LLVM_COMPONENTS=( llvm cmake third-party )
+LLVM_USE_TARGETS=llvm
+llvm.org_set_globals
+
+src_configure() {
+	llvm_prepend_path "${LLVM_MAJOR}"
+
+	local libdir=$(get_libdir)
+	local mycmakeargs=(
+		-DLLVM_LIBDIR_SUFFIX=${libdir#lib}
+
+		-DBUILD_SHARED_LIBS=OFF
+		-DLLVM_BUILD_LLVM_DYLIB=ON
+		-DLLVM_LINK_LLVM_DYLIB=ON
+		-DLLVM_OCAML_OUT_OF_TREE=ON
+
+		# cheap hack: LLVM combines both anyway, and the only difference
+		# is that the former list is explicitly verified at cmake time
+		-DLLVM_TARGETS_TO_BUILD=""
+		-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="${LLVM_TARGETS// /;}"
+		-DLLVM_BUILD_TESTS=$(usex test)
+
+		# disable various irrelevant deps and settings
+		-DLLVM_ENABLE_FFI=OFF
+		-DLLVM_ENABLE_TERMINFO=OFF
+		-DHAVE_HISTEDIT_H=NO
+		-DLLVM_ENABLE_ASSERTIONS=$(usex debug)
+		-DLLVM_ENABLE_EH=ON
+		-DLLVM_ENABLE_RTTI=ON
+
+		-DLLVM_HOST_TRIPLE="${CHOST}"
+
+		-DPython3_EXECUTABLE="${PYTHON}"
+
+		# TODO: ocamldoc
+	)
+
+	use test && mycmakeargs+=(
+		-DLLVM_LIT_ARGS="$(get_lit_flags)"
+	)
+
+	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+	# also: custom rules for OCaml do not work for CPPFLAGS
+	use debug || local -x CFLAGS="${CFLAGS} -DNDEBUG"
+	cmake_src_configure
+
+	local llvm_libdir=$(llvm-config --libdir)
+	# an ugly hack; TODO: figure out a way to pass -L to ocaml...
+	cd "${BUILD_DIR}/${libdir}" || die
+	ln -s "${llvm_libdir}"/*.so . || die
+
+	if use test; then
+		local llvm_bindir=$(llvm-config --bindir)
+		# Force using system-installed tools.
+		sed -i -e "/llvm_tools_dir/s@\".*\"@\"${llvm_bindir}\"@" \
+			"${BUILD_DIR}"/test/lit.site.cfg.py || die
+	fi
+}
+
+src_compile() {
+	cmake_build ocaml_all
+}
+
+src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+	cmake_build check-llvm-bindings-ocaml
+}
+
+src_install() {
+	DESTDIR="${D}" \
+	cmake -P "${BUILD_DIR}"/bindings/ocaml/cmake_install.cmake || die
+
+	dodoc bindings/ocaml/README.txt
+}