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# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
EAPI=6
: ${CMAKE_MAKEFILE_GENERATOR:=ninja}
# (needed due to CMAKE_BUILD_TYPE != Gentoo)
CMAKE_MIN_VERSION=3.7.0-r1
PYTHON_COMPAT=( python2_7 )
inherit cmake-utils flag-o-matic llvm multilib-minimal \
python-single-r1 toolchain-funcs pax-utils versionator
DESCRIPTION="C language family frontend for LLVM"
HOMEPAGE="https://llvm.org/"
SRC_URI="https://releases.llvm.org/${PV/_//}/cfe-${PV/_/}.src.tar.xz
https://releases.llvm.org/${PV/_//}/clang-tools-extra-${PV/_/}.src.tar.xz
!doc? ( https://dev.gentoo.org/~mgorny/dist/llvm/llvm-manpages-${PV}.tar.bz2 )
test? ( https://releases.llvm.org/${PV/_//}/llvm-${PV/_/}.src.tar.xz )"
# Keep in sync with sys-devel/llvm
ALL_LLVM_TARGETS=( AArch64 AMDGPU ARM BPF Hexagon Lanai Mips MSP430
NVPTX PowerPC RISCV Sparc SystemZ X86 XCore )
ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
LLVM_TARGET_USEDEPS=${ALL_LLVM_TARGETS[@]/%/?}
LICENSE="UoI-NCSA"
SLOT="$(get_major_version)"
KEYWORDS="~amd64 ~arm64 x86"
IUSE="debug default-compiler-rt default-libcxx doc +static-analyzer
test xml elibc_musl kernel_FreeBSD ${ALL_LLVM_TARGETS[*]}"
RDEPEND="
~sys-devel/llvm-${PV}:${SLOT}=[debug=,${LLVM_TARGET_USEDEPS// /,},${MULTILIB_USEDEP}]
static-analyzer? ( dev-lang/perl:* )
xml? ( dev-libs/libxml2:2=[${MULTILIB_USEDEP}] )
${PYTHON_DEPS}"
# configparser-3.2 breaks the build (3.3 or none at all are fine)
DEPEND="${RDEPEND}
doc? ( dev-python/sphinx )
xml? ( virtual/pkgconfig )
!!<dev-python/configparser-3.3.0.2
${PYTHON_DEPS}"
RDEPEND="${RDEPEND}
!<sys-devel/llvm-4.0.0_rc:0
!sys-devel/clang:0"
PDEPEND="
~sys-devel/clang-runtime-${PV}
default-compiler-rt? ( =sys-libs/compiler-rt-${PV%_*}* )
default-libcxx? ( sys-libs/libcxx )"
REQUIRED_USE="${PYTHON_REQUIRED_USE}
|| ( ${ALL_LLVM_TARGETS[*]} )"
# We need extra level of indirection for CLANG_RESOURCE_DIR
S=${WORKDIR}/x/y/cfe-${PV/_/}.src
# least intrusive of all
CMAKE_BUILD_TYPE=RelWithDebInfo
# Multilib notes:
# 1. ABI_* flags control ABIs libclang* is built for only.
# 2. clang is always capable of compiling code for all ABIs for enabled
# target. However, you will need appropriate crt* files (installed
# e.g. by sys-devel/gcc and sys-libs/glibc).
# 3. ${CHOST}-clang wrappers are always installed for all ABIs included
# in the current profile (i.e. alike supported by sys-devel/gcc).
#
# Therefore: use sys-devel/clang[${MULTILIB_USEDEP}] only if you need
# multilib clang* libraries (not runtime, not wrappers).
pkg_setup() {
LLVM_MAX_SLOT=${SLOT} llvm_pkg_setup
python-single-r1_pkg_setup
}
src_unpack() {
# create extra parent dirs for CLANG_RESOURCE_DIR
mkdir -p x/y || die
cd x/y || die
default
mv clang-tools-extra-*.src "${S}"/tools/extra || die
if use test; then
mv llvm-*.src "${WORKDIR}"/llvm || die
fi
}
src_prepare() {
# fix finding compiler-rt libs
eapply "${FILESDIR}"/5.0.0/0001-Driver-Use-arch-type-to-find-compiler-rt-libraries-o.patch
# fix stand-alone doc build
eapply "${FILESDIR}"/4.0.1/0007-cmake-Support-stand-alone-Sphinx-doxygen-doc-build.patch
# fix value of ATOMIC_*_LOCK_FREE
# (backport, temporary reverted upstream because of FreeBSD issues)
eapply "${FILESDIR}"/4.0.1/0001-Frontend-Correct-values-of-ATOMIC_-_LOCK_FREE-to-mat.patch
cd tools/extra || die
# fix stand-alone test build for extra tools
eapply "${FILESDIR}"/4.0.1/extra/0001-test-Fix-test-dependencies-when-using-installed-tool.patch
eapply "${FILESDIR}"/5.0.0/extra/0002-test-Fix-clang-library-dir-in-LD_LIBRARY_PATH-For-st.patch
cd - >/dev/null || die
# User patches
cmake-utils_src_prepare
}
multilib_src_configure() {
local llvm_version=$(llvm-config --version) || die
local clang_version=$(get_version_component_range 1-3 "${llvm_version}")
local mycmakeargs=(
# ensure that the correct llvm-config is used
-DLLVM_CONFIG="$(type -P "${CHOST}-llvm-config")"
-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/lib/llvm/${SLOT}"
# relative to bindir
-DCLANG_RESOURCE_DIR="../../../../lib/clang/${clang_version}"
-DBUILD_SHARED_LIBS=ON
-DLLVM_TARGETS_TO_BUILD="${LLVM_TARGETS// /;}"
-DLLVM_BUILD_TESTS=$(usex test)
# these are not propagated reliably, so redefine them
-DLLVM_ENABLE_EH=ON
-DLLVM_ENABLE_RTTI=ON
-DCMAKE_DISABLE_FIND_PACKAGE_LibXml2=$(usex !xml)
# libgomp support fails to find headers without explicit -I
# furthermore, it provides only syntax checking
-DCLANG_DEFAULT_OPENMP_RUNTIME=libomp
# override default stdlib and rtlib
-DCLANG_DEFAULT_CXX_STDLIB=$(usex default-libcxx libc++ "")
-DCLANG_DEFAULT_RTLIB=$(usex default-compiler-rt compiler-rt "")
-DCLANG_ENABLE_ARCMT=$(usex static-analyzer)
-DCLANG_ENABLE_STATIC_ANALYZER=$(usex static-analyzer)
)
use test && mycmakeargs+=(
-DLLVM_MAIN_SRC_DIR="${WORKDIR}/llvm"
)
if multilib_is_native_abi; then
mycmakeargs+=(
-DLLVM_BUILD_DOCS=$(usex doc)
-DLLVM_ENABLE_SPHINX=$(usex doc)
-DLLVM_ENABLE_DOXYGEN=OFF
# workaround pthread
-DPTHREAD_LIB=-pthread
)
use doc && mycmakeargs+=(
-DCLANG_INSTALL_SPHINX_HTML_DIR="${EPREFIX}/usr/share/doc/${PF}/html"
-DCLANG-TOOLS_INSTALL_SPHINX_HTML_DIR="${EPREFIX}/usr/share/doc/${PF}/tools-extra"
-DSPHINX_WARNINGS_AS_ERRORS=OFF
)
else
mycmakeargs+=(
-DLLVM_TOOL_CLANG_TOOLS_EXTRA_BUILD=OFF
)
fi
if tc-is-cross-compiler; then
[[ -x "/usr/bin/clang-tblgen" ]] \
|| die "/usr/bin/clang-tblgen not found or usable"
mycmakeargs+=(
-DCMAKE_CROSSCOMPILING=ON
-DCLANG_TABLEGEN=/usr/bin/clang-tblgen
)
fi
# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
cmake-utils_src_configure
}
multilib_src_compile() {
cmake-utils_src_compile
# provide a symlink for tests
if [[ ! -L ${WORKDIR}/lib/clang ]]; then
mkdir -p "${WORKDIR}"/lib || die
ln -s "${BUILD_DIR}/$(get_libdir)/clang" "${WORKDIR}"/lib/clang || die
fi
}
multilib_src_test() {
# respect TMPDIR!
local -x LIT_PRESERVES_TMP=1
cmake-utils_src_make check-clang
# clang-tidy requires [static-analyzer] and tests are not split
# correctly, so they are all disabled when static-analyzer is off
if multilib_is_native_abi && use static-analyzer; then
cmake-utils_src_make check-clang-tools
fi
}
src_install() {
MULTILIB_WRAPPED_HEADERS=(
/usr/include/clang/Config/config.h
)
multilib-minimal_src_install
# Move runtime headers to /usr/lib/clang, where they belong
mv "${ED%/}"/usr/include/clangrt "${ED%/}"/usr/lib/clang || die
# move (remaining) wrapped headers back
mv "${ED%/}"/usr/include "${ED%/}"/usr/lib/llvm/${SLOT}/include || die
# Apply CHOST and version suffix to clang tools
# note: we use two version components here (vs 3 in runtime path)
local llvm_version=$(llvm-config --version) || die
local clang_version=$(get_version_component_range 1-2 "${llvm_version}")
local clang_full_version=$(get_version_component_range 1-3 "${llvm_version}")
local clang_tools=( clang clang++ clang-cl clang-cpp )
local abi i
# cmake gives us:
# - clang-X.Y
# - clang -> clang-X.Y
# - clang++, clang-cl, clang-cpp -> clang
# we want to have:
# - clang-X.Y
# - clang++-X.Y, clang-cl-X.Y, clang-cpp-X.Y -> clang-X.Y
# - clang, clang++, clang-cl, clang-cpp -> clang*-X.Y
# also in CHOST variant
for i in "${clang_tools[@]:1}"; do
rm "${ED%/}/usr/lib/llvm/${SLOT}/bin/${i}" || die
dosym "clang-${clang_version}" "/usr/lib/llvm/${SLOT}/bin/${i}-${clang_version}"
dosym "${i}-${clang_version}" "/usr/lib/llvm/${SLOT}/bin/${i}"
done
# now create target symlinks for all supported ABIs
for abi in $(get_all_abis); do
local abi_chost=$(get_abi_CHOST "${abi}")
for i in "${clang_tools[@]}"; do
dosym "${i}-${clang_version}" \
"/usr/lib/llvm/${SLOT}/bin/${abi_chost}-${i}-${clang_version}"
dosym "${abi_chost}-${i}-${clang_version}" \
"/usr/lib/llvm/${SLOT}/bin/${abi_chost}-${i}"
done
done
# Remove unnecessary headers on FreeBSD, bug #417171
if use kernel_FreeBSD; then
rm "${ED}"usr/lib/clang/${clang_full_version}/include/{std,float,iso,limits,tgmath,varargs}*.h || die
fi
}
multilib_src_install() {
cmake-utils_src_install
# move headers to /usr/include for wrapping & ABI mismatch checks
# (also drop the version suffix from runtime headers)
rm -rf "${ED%/}"/usr/include || die
mv "${ED%/}"/usr/lib/llvm/${SLOT}/include "${ED%/}"/usr/include || die
mv "${ED%/}"/usr/lib/llvm/${SLOT}/$(get_libdir)/clang "${ED%/}"/usr/include/clangrt || die
}
multilib_src_install_all() {
python_fix_shebang "${ED}"
if use static-analyzer; then
python_optimize "${ED}"usr/lib/llvm/${SLOT}/share/scan-view
fi
# install pre-generated manpages
if ! use doc; then
insinto "/usr/lib/llvm/${SLOT}/share/man/man1"
doins "${WORKDIR}/x/y/llvm-manpages-${PV}/clang"/*.1
fi
docompress "/usr/lib/llvm/${SLOT}/share/man"
# match 'html' non-compression
use doc && docompress -x "/usr/share/doc/${PF}/tools-extra"
# +x for some reason; TODO: investigate
use static-analyzer && fperms a-x "/usr/lib/llvm/${SLOT}/share/man/man1/scan-build.1"
}
pkg_postinst() {
if [[ ${ROOT} == / && -f ${EPREFIX}/usr/share/eselect/modules/compiler-shadow.eselect ]] ; then
eselect compiler-shadow update all
fi
}
pkg_postrm() {
if [[ ${ROOT} == / && -f ${EPREFIX}/usr/share/eselect/modules/compiler-shadow.eselect ]] ; then
eselect compiler-shadow clean all
fi
}
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