llvm-core/flang: Add 22.0.0_pre20260113 snapshot

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

llvm-core/flang/Manifest

@@ -1,4 +1,5 @@
 DIST llvm-project-05349a9b43805d3c0b424da99f3a1fa362cd3419.tar.gz 256643165 BLAKE2B fe7be8ea73a22de902c399784ad95a0011add75af77ddc191bcbabdd276df65af4aa5339cdc74e89f5d2971ef74251ea46a5513a462a97963d36f85102c89665 SHA512 d6c58681f3e3f59589f2eac963ab9e92cd27a39dafe3e79ebdae82ad9e6fc6e3180a45ba7a142a7552a3585bc6cba46caeff1c0e2227563ec48820cdd1502e86
 DIST llvm-project-21.1.8.src.tar.xz 158958576 BLAKE2B 0d3d4ee920f8e5db50e98152616f16004c74df0e7313cc86d893428fb7b1c875109988a5e40ea6f2e5d0fef53c7bfe2fc2b69e84807f6eb440b03afa1b228a36 SHA512 cae4c44e7bf678071723da63ad5839491d717a7233e7f4791aa408207f3ea42f52de939ad15189b112c02a0770f1bb8d59bae6ad31ef53417a6eea7770fe52ab
 DIST llvm-project-21.1.8.src.tar.xz.sig 119 BLAKE2B cffc1825f5778a3e3c128ec3e856ff6ee50687319d621cdf42e895abf67e05cc51cb7493308e2b506ab60dbdbaca7aa75eb9f78d91d42c81f9682a36f4042e9d SHA512 10f58eff58ed6e701d0f123b15e68c82ab8cbdf99b1c86c0d83e3b8553e90ea51055e30327e8e442ded57c8f503e2a2de9ee075e9c28b5ba815a0f8922f8671c
+DIST llvm-project-85c3c83ae54c9e81924f1ca048cfddc8d36bbb02.tar.gz 258189384 BLAKE2B d7a0c36511c17e8dacef27701abcda316902ac17325c63f79e33366efc783e0ab53d62d71c92e2e49457db095d9e8fec0bcabf1a8056a95d25eb976bdd5ba15f SHA512 a8a9ea91b4181005fb6385afff7681fdfc5a46e05aba216add29216a6dcb70cc667d1d300ee85be75997a963193e8e015917401def27d5759ff774f0fa00b527
 DIST llvm-project-b01c3d6682d2fa5d6ac22d5a964b739009e9db7b.tar.gz 256801517 BLAKE2B dbdcaed7e0e06a673730c53c64c988add905b2679695ca0cf09db8b28f59eedd5455f4a0ad5a3d672e4f6601d7480775ef8fc405dc1e60c75b425382410e59cf SHA512 3afa29dac2f9b22e6af4b1783bae0bc7507a1a8ca397e88fd6687cbd9620df54525b2b9115906b80e9d1dcd16e0704a5a90eaa6cf0fa3d7f89d3d60f7d8ee19f

llvm-core/flang/flang-22.0.0_pre20260113.ebuild

@@ -0,0 +1,101 @@
+# 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 flag-o-matic llvm.org python-any-r1 toolchain-funcs
+
+DESCRIPTION="LLVM's Fortran frontend"
+HOMEPAGE="https://flang.llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions"
+SLOT="${LLVM_MAJOR}/${LLVM_SOABI}"
+IUSE="+clang +debug test"
+RESTRICT="!test? ( test )"
+
+DEPEND="
+	~llvm-core/clang-${PV}[debug=]
+	~llvm-core/llvm-${PV}[debug=]
+	~llvm-core/mlir-${PV}[debug=]
+"
+RDEPEND="
+	${DEPEND}
+"
+PDEPEND="
+	>=llvm-runtimes/flang-rt-${PV}:${LLVM_MAJOR}
+"
+BDEPEND="
+	clang? ( llvm-core/clang )
+	test? (
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+	)
+"
+
+LLVM_COMPONENTS=( flang cmake )
+LLVM_TEST_COMPONENTS=( clang/test/Driver mlir/test/lib )
+LLVM_USE_TARGETS=llvm+eq
+llvm.org_set_globals
+
+python_check_deps() {
+	python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+pkg_pretend() {
+	if ! use clang && tc-is-gcc; then
+		ewarn "Building using GCC requires lots of memory (up to 10 GiB per process)."
+		ewarn "Consider enabling USE=clang."
+		ewarn "See https://gcc.gnu.org/PR119705"
+	fi
+}
+
+pkg_setup() {
+	use test && python-any-r1_pkg_setup
+}
+
+src_configure() {
+	if use clang; then
+		# Only do this conditionally to allow overriding with
+		# e.g. CC=clang-13 in case of breakage
+		if ! tc-is-clang ; then
+			local -x CC=${CHOST}-clang
+			local -x CXX=${CHOST}-clang++
+		fi
+
+		strip-unsupported-flags
+	fi
+
+	local mycmakeargs=(
+		-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}"
+
+		-DLLVM_ROOT="${ESYSROOT}/usr/lib/llvm/${LLVM_MAJOR}"
+		-DCLANG_RESOURCE_DIR="../../../clang/${LLVM_MAJOR}"
+
+		-DBUILD_SHARED_LIBS=OFF
+		-DMLIR_LINK_MLIR_DYLIB=ON
+		# flang does not feature a dylib, so do not install libraries
+		# or headers
+		-DLLVM_INSTALL_TOOLCHAIN_ONLY=ON
+		# installed by llvm-runtimes/flang-rt
+		-DFLANG_INCLUDE_RUNTIME=OFF
+
+		# TODO: always enable to obtain reproducible tools
+		-DFLANG_INCLUDE_TESTS=$(usex test)
+
+		-DLLVM_TARGETS_TO_BUILD="${LLVM_TARGETS// /;}"
+	)
+	use test && mycmakeargs+=(
+		-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+		-DLLVM_LIT_ARGS="$(get_lit_flags)"
+	)
+
+	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+	use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+	cmake_src_configure
+}
+
+src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+	cmake_build check-flang
+}