diff options
Diffstat (limited to 'sys-libs/libcxx/libcxx-5.0.9999.ebuild')
| -rw-r--r-- | sys-libs/libcxx/libcxx-5.0.9999.ebuild | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/sys-libs/libcxx/libcxx-5.0.9999.ebuild b/sys-libs/libcxx/libcxx-5.0.9999.ebuild new file mode 100644 index 000000000000..625b35685370 --- /dev/null +++ b/sys-libs/libcxx/libcxx-5.0.9999.ebuild @@ -0,0 +1,211 @@ +# Copyright 1999-2017 Gentoo Foundation +# Distributed under the terms of the GNU General Public License v2 + +EAPI=6 + +# Ninja provides better scalability and cleaner verbose output, and is used +# throughout all LLVM projects. +: ${CMAKE_MAKEFILE_GENERATOR:=ninja} +# (needed due to CMAKE_BUILD_TYPE != Gentoo) +CMAKE_MIN_VERSION=3.7.0-r1 +EGIT_REPO_URI="https://git.llvm.org/git/libcxx.git + https://github.com/llvm-mirror/libcxx.git" +EGIT_BRANCH="release_50" +PYTHON_COMPAT=( python2_7 ) + +[[ ${PV} == 9999 ]] && SCM="git-r3" || SCM="" + +inherit ${SCM} cmake-multilib llvm python-any-r1 toolchain-funcs + +DESCRIPTION="New implementation of the C++ standard library, targeting C++11" +HOMEPAGE="https://libcxx.llvm.org/" +if [[ ${PV} != 9999 ]] ; then + SRC_URI="https://llvm.org/releases/${PV}/${P}.src.tar.xz" + S="${WORKDIR}/${P}.src" +else + SRC_URI="" +fi + +LICENSE="|| ( UoI-NCSA MIT )" +SLOT="0" +if [[ ${PV} != 9999 ]] ; then + KEYWORDS="~amd64 ~x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x86-linux" +else + KEYWORDS="" +fi +IUSE="elibc_glibc elibc_musl +libcxxabi libcxxrt +libunwind +static-libs test" +REQUIRED_USE="libunwind? ( || ( libcxxabi libcxxrt ) ) + ?? ( libcxxabi libcxxrt )" + +RDEPEND=" + libcxxabi? ( ~sys-libs/libcxxabi-${PV}[libunwind=,static-libs?,${MULTILIB_USEDEP}] ) + libcxxrt? ( sys-libs/libcxxrt[libunwind=,static-libs?,${MULTILIB_USEDEP}] ) + !libcxxabi? ( !libcxxrt? ( >=sys-devel/gcc-4.7:=[cxx] ) )" +# LLVM 4 required for llvm-config --cmakedir +# clang-3.9.0 installs necessary target symlinks unconditionally +# which removes the need for MULTILIB_USEDEP +DEPEND="${RDEPEND} + test? ( >=sys-devel/clang-3.9.0 + $(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]') ) + app-arch/xz-utils + >=sys-devel/llvm-4" + +DOCS=( CREDITS.TXT ) + +PATCHES=( + # Add link flag "-Wl,-z,defs" to avoid underlinking; this is needed in a + # out-of-tree build. + "${FILESDIR}/${PN}-3.9-cmake-link-flags.patch" +) + +# least intrusive of all +CMAKE_BUILD_TYPE=RelWithDebInfo + +python_check_deps() { + has_version "dev-python/lit[${PYTHON_USEDEP}]" +} + +pkg_setup() { + llvm_pkg_setup + use test && python-any-r1_pkg_setup + + if ! use libcxxabi && ! use libcxxrt && ! tc-is-gcc ; then + eerror "To build ${PN} against libsupc++, you have to use gcc. Other" + eerror "compilers are not supported. Please set CC=gcc and CXX=g++" + eerror "and try again." + die + fi + if tc-is-gcc && [[ $(gcc-version) < 4.7 ]] ; then + eerror "${PN} needs to be built with gcc-4.7 or later (or other" + eerror "conformant compilers). Please use gcc-config to switch to" + eerror "gcc-4.7 or later version." + die + fi +} + +multilib_src_configure() { + local cxxabi cxxabi_incs + if use libcxxabi; then + cxxabi=libcxxabi + cxxabi_incs="${EPREFIX}/usr/include/libcxxabi" + elif use libcxxrt; then + cxxabi=libcxxrt + cxxabi_incs="${EPREFIX}/usr/include/libcxxrt" + else + local gcc_inc="${EPREFIX}/usr/lib/gcc/${CHOST}/$(gcc-fullversion)/include/g++-v$(gcc-major-version)" + cxxabi=libsupc++ + cxxabi_incs="${gcc_inc};${gcc_inc}/${CHOST}" + fi + + # we want -lgcc_s for unwinder, and for compiler runtime when using + # gcc, clang with gcc runtime (or any unknown compiler) + local extra_libs=() want_gcc_s=ON + if use libunwind; then + # work-around missing -lunwind upstream + extra_libs+=( -lunwind ) + # if we're using libunwind and clang with compiler-rt, we want + # to link to compiler-rt instead of -lgcc_s + if tc-is-clang; then + # get the full library list out of 'pretend mode' + # and grep it for libclang_rt references + local args=( $($(tc-getCC) -### -x c - 2>&1 | tail -n 1) ) + local i + for i in "${args[@]}"; do + if [[ ${i} == *libclang_rt* ]]; then + want_gcc_s=OFF + extra_libs+=( "${i}" ) + fi + done + fi + fi + + local libdir=$(get_libdir) + local mycmakeargs=( + -DLIBCXX_LIBDIR_SUFFIX=${libdir#lib} + -DLIBCXX_ENABLE_SHARED=ON + -DLIBCXX_ENABLE_STATIC=$(usex static-libs) + -DLIBCXX_CXX_ABI=${cxxabi} + -DLIBCXX_CXX_ABI_INCLUDE_PATHS=${cxxabi_incs} + # we're using our own mechanism for generating linker scripts + -DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF + -DLIBCXX_HAS_MUSL_LIBC=$(usex elibc_musl) + -DLIBCXX_HAS_GCC_S_LIB=${want_gcc_s} + -DLIBCXX_INCLUDE_TESTS=$(usex test) + -DCMAKE_SHARED_LINKER_FLAGS="${extra_libs[*]} ${LDFLAGS}" + ) + + if use test; then + mycmakeargs+=( + # this can be any directory, it just needs to exist... + # FIXME: remove this once https://reviews.llvm.org/D25093 is merged + -DLLVM_MAIN_SRC_DIR="${T}" + -DLIT_COMMAND="${EPREFIX}"/usr/bin/lit + ) + fi + cmake-utils_src_configure +} + +multilib_src_test() { + local clang_path=$(type -P "${CHOST:+${CHOST}-}clang" 2>/dev/null) + + [[ -n ${clang_path} ]] || die "Unable to find ${CHOST}-clang for tests" + sed -i -e "/cxx_under_test/s^\".*\"^\"${clang_path}\"^" test/lit.site.cfg || die + + cmake-utils_src_make check-libcxx +} + +# Usage: deps +gen_ldscript() { + local output_format + output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') + [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" + + cat <<-END_LDSCRIPT +/* GNU ld script + Include missing dependencies +*/ +${output_format} +GROUP ( $@ ) +END_LDSCRIPT +} + +gen_static_ldscript() { + local libdir=$(get_libdir) + local cxxabi_lib=$(usex libcxxabi "libc++abi.a" "$(usex libcxxrt "libcxxrt.a" "libsupc++.a")") + + # Move it first. + mv "${ED}/usr/${libdir}/libc++.a" "${ED}/usr/${libdir}/libc++_static.a" || die + # Generate libc++.a ldscript for inclusion of its dependencies so that + # clang++ -stdlib=libc++ -static works out of the box. + local deps="libc++_static.a ${cxxabi_lib} $(usex libunwind libunwind.a libgcc_eh.a)" + # On Linux/glibc it does not link without libpthread or libdl. It is + # fine on FreeBSD. + use elibc_glibc && deps+=" libpthread.a libdl.a" + + gen_ldscript "${deps}" > "${ED}/usr/${libdir}/libc++.a" || die +} + +gen_shared_ldscript() { + local libdir=$(get_libdir) + # libsupc++ doesn't have a shared version + local cxxabi_lib=$(usex libcxxabi "libc++abi.so" "$(usex libcxxrt "libcxxrt.so" "libsupc++.a")") + + mv "${ED}/usr/${libdir}/libc++.so" "${ED}/usr/${libdir}/libc++_shared.so" || die + local deps="libc++_shared.so ${cxxabi_lib} $(usex libunwind libunwind.so libgcc_s.so)" + + gen_ldscript "${deps}" > "${ED}/usr/${libdir}/libc++.so" || die +} + +multilib_src_install() { + cmake-utils_src_install + gen_shared_ldscript + use static-libs && gen_static_ldscript +} + +pkg_postinst() { + elog "This package (${PN}) is mainly intended as a replacement for the C++" + elog "standard library when using clang." + elog "To use it, instead of libstdc++, use:" + elog " clang++ -stdlib=libc++" + elog "to compile your C++ programs." +} |