sys-devel/clang-bloomberg-p2996: add 21.0.0_p20260204

Signed-off-by: Florian Albrechtskirchinger <falbrechtskirchinger@gmail.com>
This commit is contained in:
Florian Albrechtskirchinger
2026-02-25 04:04:06 +01:00
parent 8c70d85929
commit cfd6d3ea49
2 changed files with 242 additions and 0 deletions

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DIST clang-bloomberg-p2996-21.0.0_p20250702.tar.gz 240748568 BLAKE2B 07d1e5dfab32031ddbc5f7f86a7cfef9f751c7db71af1aea8c87bfb9a4819c5f47907d2c1a35fb929f28974df1413d394a6cef35324b6dc49e224ae3d6b4afe8 SHA512 f9304170c1f139e25fa17ba20eeb39e4612eedd853b7889d194fd526081c6a3eff05077bb9ae954360ee600b7419a8d63cb9171bcac8ba8694ae62b0413f891c
DIST clang-bloomberg-p2996-21.0.0_p20260204.tar.gz 240770843 BLAKE2B 9dadc6c85a363d7170ec163910bcde2a92529024f08f8140e35c4e87452100252c1d427f22eedb220967439b585e98259ebd70687353ffea7124f9f5b46e38e5 SHA512 57d359fa677cb71f9a57254f90b134a47758e343850431c439690ca7922b012acdff31479fda4f9e49762dd1568204a7d181549980e86091798a00174fc5c912

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# Copyright 2025 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
inherit cmake prefix python-utils-r1
DESCRIPTION="Clang fork implementing experimental support for P2996 (Reflection for C++26)"
HOMEPAGE="https://github.com/bloomberg/clang-p2996"
LICENSE="Apache-2.0-with-LLVM-exceptions UoI-NCSA BSD MIT public-domain rc"
SLOT="0"
if [[ ${PV} == 9999 ]]; then
inherit git-r3
EGIT_REPO_URI="https://github.com/bloomberg/clang-p2996.git"
EGIT_BRANCH="p2996"
else
GIT_COMMIT="2ea0a79fe7bb5f6fdb8c687ba0e21ab63696e7f7"
SRC_URI="https://github.com/bloomberg/clang-p2996/archive/${GIT_COMMIT}.tar.gz -> ${P}.tar.gz"
S="${WORKDIR}/clang-p2996-${GIT_COMMIT}"
KEYWORDS="~amd64"
fi
ALL_LLVM_TARGETS="AArch64 AMDGPU ARC ARM AVR BPF CSKY DirectX Hexagon Lanai LoongArch M68k MSP430 Mips NVPTX PowerPC RISCV SPIRV Sparc SystemZ VE WebAssembly +X86 XCore Xtensa"
IUSE="+debug +default-reflection-latest +pie"
for target in ${ALL_LLVM_TARGETS}; do
IUSE+=" ${target%${target#+}}llvm_targets_${target#+}"
done
# TODO
RDEPEND="virtual/zlib:="
DEPEND="${RDEPEND}"
PATCHES=(
"${FILESDIR}/21.0.0_p20250702-unknown-reflection.patch"
"${FILESDIR}/21.0.0_p20250702-uninitialized.patch"
)
CMAKE_USE_DIR="$S/llvm"
src_prepare() {
# create extra parent dir for relative CLANG_RESOURCE_DIR access
mkdir -p x/y || die
BUILD_DIR=${WORKDIR}/x/y/clang
use default-reflection-latest && eapply "${FILESDIR}/21.0.0_p20250702-enable-reflection-latest.patch"
cmake_src_prepare
# add Gentoo Portage Prefix for Darwin (see prefix-dirs.patch)
eprefixify \
clang/lib/Lex/InitHeaderSearch.cpp \
clang/lib/Driver/ToolChains/Darwin.cpp || die
if ! use prefix-guest && [[ -n ${EPREFIX} ]]; then
sed -i "/LibDir.*Loader/s@return \"\/\"@return \"${EPREFIX}/\"@" clang/lib/Driver/ToolChains/Linux.cpp || die
fi
}
src_configure() {
local targets=()
for target in ${ALL_LLVM_TARGETS}; do
use llvm_targets_${target#+} && targets+=("${target#+}")
done
if [ ${#targets[@]} -eq 0 ]; then
die "At least one LLVM target must be enabled"
fi
local libdir=$(get_libdir)
local mycmakeargs=(
-DDEFAULT_SYSROOT=$(usex prefix-guest "" "${EPREFIX}")
-DCMAKE_CXX_COMPILER_TARGET="${CHOST}"
-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/lib/llvm/bloomberg-p2996"
-DLLVM_LIBDIR_SUFFIX=${libdir#lib}
-DBUILD_SHARED_LIBS=OFF
-DLLVM_HOST_TRIPLE="${CHOST}"
-DLLVM_BUILD_LLVM_DYLIB=ON
-DLLVM_LINK_LLVM_DYLIB=ON
-DLLVM_ENABLE_PROJECTS="clang"
-DLLVM_ENABLE_RUNTIMES="libcxxabi;libcxx"
-DLLVM_TARGETS_TO_BUILD="$(IFS=';'; echo "${targets[*]}")"
-DLLVM_INCLUDE_BENCHMARKS=OFF
-DLLVM_INCLUDE_TESTS=OFF
-DLLVM_BUILD_TESTS=OFF
-DLLVM_INSTALL_GTEST=OFF
-DLLVM_ENABLE_ASSERTIONS=$(usex debug)
-DLLVM_ENABLE_EH=ON
-DLLVM_ENABLE_RTTI=ON
-DLLVM_ENABLE_ZLIB=FORCE_ON
-DLIBCXX_ENABLE_SHARED=ON
-DLIBCXX_ENABLE_STATIC=OFF
-DLIBCXX_CXX_ABI=libcxxabi
-DLIBCXX_USE_COMPILER_RT=OFF
-DLIBCXX_HAS_GCC_S_LIB=OFF
-DLIBCXX_INCLUDE_BENCHMARKS=OFF
-DLIBCXX_INCLUDE_TESTS=OFF
-DLIBCXXABI_LIBUNWIND_INCLUDES="${EPREFIX}"/usr/include
-DLIBCXXABI_USE_LLVM_UNWINDER=OFF
-DCLANG_CONFIG_FILE_SYSTEM_DIR="${EPREFIX}/etc/clang/bloomberg-p2996"
-DCLANG_CONFIG_FILE_USER_DIR="~/.config/clang"
# relative to bindir
-DCLANG_RESOURCE_DIR="../../../../lib/clang/bloomberg-p2996"
-DCLANG_LINK_CLANG_DYLIB=ON
-DCLANG_INCLUDE_TESTS=OFF
-DCLANG_DEFAULT_OPENMP_RUNTIME=libomp
-DCLANG_DEFAULT_PIE_ON_LINUX=$(usex pie)
-DPython3_EXECUTABLE="${PYTHON}"
-DOCAMLFIND=NO
)
use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
cmake_src_configure
}
src_compile() {
cmake_src_compile
}
_doclang_cfg() {
local triple="${1}"
local tool
for tool in clang{,++,-cpp}; do
newins - "${triple}-${tool}.cfg" <<-EOF
# This configuration file is used by ${triple}-${tool} driver.
@../${triple}-${tool}.cfg
@gentoo-plugins.cfg
@gentoo-runtimes.cfg
EOF
if [[ ! -f "${ED}/etc/clang/bloomberg-p2996/bloomberg-p2996-${tool}.cfg" ]]; then
dosym "${triple}-${tool}.cfg" "/etc/clang/bloomberg-p2996/bloomberg-p2996-${tool}.cfg"
fi
done
# Install symlinks for triples with other vendor strings since some
# programs insist on mangling the triple.
local vendor
for vendor in gentoo pc unknown; do
local vendor_triple="${triple%%-*}-${vendor}-${triple#*-*-}"
for tool in clang{,++,-cpp}; do
if [[ ! -f "${ED}/etc/clang/bloomberg-p2996/${vendor_triple}-${tool}.cfg" ]]; then
dosym "${triple}-${tool}.cfg" "/etc/clang/bloomberg-p2996/${vendor_triple}-${tool}.cfg"
fi
done
done
}
doclang_cfg() {
#local triple=$(get_abi_CHOST "${abi}")
local triple=${CHOST}
_doclang_cfg ${triple}
# LLVM may have different arch names in some cases. For example in x86
# profiles the triple uses i686, but llvm will prefer i386 if invoked
# with "clang" on x86 or "clang -m32" on x86_64. The gentoo triple will
# be used if invoked through ${CHOST}-clang{,++,-cpp} though.
#
# To make sure the correct triples are installed,
# see Triple::getArchTypeName() in llvm/lib/TargetParser/Triple.cpp
# and compare with CHOST values in profiles.
local abi=${triple%%-*}
case ${abi} in
armv4l|armv4t|armv5tel|armv6j|armv7a)
_doclang_cfg ${triple/${abi}/arm}
;;
i686)
_doclang_cfg ${triple/${abi}/i386}
;;
sparc)
_doclang_cfg ${triple/${abi}/sparcel}
;;
sparc64)
_doclang_cfg ${triple/${abi}/sparcv9}
;;
esac
}
src_install() {
cmake_src_install
# Rename programs and update symlinks
cd "${D}/usr/lib/llvm/bloomberg-p2996/bin" || die
for file in *; do
if [[ -f "${file}" && -x "${file}" && ! -L "${file}" ]]; then
# Rename regular, executable files
mv "${file}" "bloomberg-p2996-${file}" || die "Failed to rename ${file}"
elif [[ -L "${file}" ]]; then
# Update symlink to point to renamed target
local target
target=$(readlink "${file}") || die "Failed to read symlink ${file}"
ln -sf "bloomberg-p2996-${target}" "bloomberg-p2996-${file}" || die "Failed to update symlink ${file}"
rm "${file}" || die "Failed to remove original symlink ${file}"
fi
done
local ldpath="${EPREFIX}/usr/lib/llvm/bloomberg-p2996/$(get_libdir)"
newenvd - "60llvm-bloomberg-p2996" <<-_EOF_
PATH="${EPREFIX}/usr/lib/llvm/bloomberg-p2996/bin"
# we need to duplicate it in ROOTPATH for Portage to respect...
ROOTPATH="${EPREFIX}/usr/lib/llvm/bloomberg-p2996/bin"
LDPATH="${ldpath}:${ldpath}/${CHOST}"
_EOF_
insinto "/etc/clang/bloomberg-p2996"
newins - gentoo-runtimes.cfg <<-EOF
# This file is initially generated by sys-devel/clang-bloomberg-p2996::guru.
# It is used to control the default runtimes using by clang.
--rtlib=libgcc
--unwindlib=libgcc
--stdlib=libc++
-fuse-ld=bfd
-L${ldpath}/${CHOST}
EOF
newins - gentoo-plugins.cfg <<-EOF
# This file is used to load optional LLVM plugins.
EOF
doclang_cfg
rm -r "${D}/usr/share/man" || die
}
pkg_postinst() {
elog "Binaries are installed with a 'bloomberg-p2996-' prefix,"
elog "e.g.: bloomberg-p2996-clang++"
use default-reflection-latest && \
elog "Pass -fno-reflection-latest to disable reflection support." || \
elog "Pass -freflection-latest to enable reflection support."
}