| # Copyright 1999-2015 Gentoo Foundation |
| # Distributed under the terms of the GNU General Public License v2 |
| # $Id$ |
| |
| EAPI=5 |
| |
| ESVN_REPO_URI="http://llvm.org/svn/llvm-project/libcxx/trunk" |
| |
| [ "${PV%9999}" != "${PV}" ] && SCM="subversion" || SCM="" |
| |
| inherit ${SCM} flag-o-matic toolchain-funcs multilib multilib-minimal |
| |
| DESCRIPTION="New implementation of the C++ standard library, targeting C++11" |
| HOMEPAGE="http://libcxx.llvm.org/" |
| if [ "${PV%9999}" = "${PV}" ] ; then |
| SRC_URI="http://llvm.org/releases/${PV}/${P}.src.tar.xz" |
| S="${WORKDIR}/${P}.src" |
| else |
| SRC_URI="" |
| fi |
| |
| LICENSE="|| ( UoI-NCSA MIT )" |
| SLOT="0" |
| if [ "${PV%9999}" = "${PV}" ] ; then |
| KEYWORDS="~amd64 ~mips ~x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x86-linux" |
| else |
| KEYWORDS="" |
| fi |
| IUSE="elibc_glibc +libcxxrt +static-libs test" |
| |
| RDEPEND="libcxxrt? ( >=sys-libs/libcxxrt-0.0_p20130725[static-libs?,${MULTILIB_USEDEP}] ) |
| !libcxxrt? ( >=sys-devel/gcc-4.7:=[cxx] )" |
| DEPEND="${RDEPEND} |
| test? ( sys-devel/clang ) |
| app-arch/xz-utils" |
| |
| DOCS=( CREDITS.TXT ) |
| |
| pkg_setup() { |
| if ! use libcxxrt ; then |
| ewarn "You have disabled USE=libcxxrt. This will build ${PN} against" |
| ewarn "libsupc++. Please note that this is not well supported." |
| ewarn "In particular, static linking will not work." |
| fi |
| if [[ $(gcc-version) < 4.7 ]] && [[ $(tc-getCXX) != *clang++* ]] ; then |
| eerror "${PN} needs to be built with clang++ or gcc-4.7 or later." |
| eerror "Please use gcc-config to switch to gcc-4.7 or later version." |
| die |
| fi |
| } |
| |
| src_prepare() { |
| cp -f "${FILESDIR}/Makefile" lib/ || die |
| multilib_copy_sources |
| } |
| |
| src_configure() { |
| export LIBS="-lpthread -lrt -lc -lgcc_s" |
| if use libcxxrt ; then |
| append-cppflags -DLIBCXXRT "-I${EPREFIX}/usr/include/libcxxrt/" |
| LIBS="-lcxxrt ${LIBS}" |
| cp "${EPREFIX}/usr/include/libcxxrt/"*.h "${S}/include" |
| else |
| # Very hackish, see $HOMEPAGE |
| # If someone has a clever idea, please share it! |
| local includes="$(echo | ${CHOST}-g++ -Wp,-v -x c++ - -fsyntax-only 2>&1 | grep -C 2 '#include.*<...>' | tail -n 2 | sed -e 's/^ /-I/' | tr '\n' ' ')" |
| local libcxx_gcc_dirs="$(echo | ${CHOST}-g++ -Wp,-v -x c++ - -fsyntax-only 2>&1 | grep -C 2 '#include.*<...>' | tail -n 2 | tr '\n' ' ')" |
| append-cppflags -D__GLIBCXX__ ${includes} |
| LIBS="-lsupc++ ${LIBS}" |
| local libsupcxx_includes="cxxabi.h bits/c++config.h bits/os_defines.h bits/cpu_defines.h bits/cxxabi_tweaks.h bits/cxxabi_forced.h" |
| for i in ${libsupcxx_includes} ; do |
| local found="" |
| [ -d "${S}/include/$(dirname ${i})/" ] || mkdir -p "${S}/include/$(dirname ${i})" |
| for j in ${libcxx_gcc_dirs} ; do |
| if [ -f "${j}/${i}" ] ; then |
| cp "${j}/${i}" "${S}/include/$(dirname ${i})/" || die |
| found=yes |
| fi |
| done |
| [ -n "${found}" ] || die "Header not found: ${i}" |
| done |
| fi |
| |
| tc-export AR CC CXX |
| |
| append-ldflags "-Wl,-z,defs" # make sure we are not underlinked |
| } |
| |
| multilib_src_compile() { |
| cd "${BUILD_DIR}/lib" || die |
| emake shared |
| use static-libs && emake static |
| } |
| |
| # Tests fail for now, if anybody is able to fix them, help is very welcome. |
| multilib_src_test() { |
| cd "${BUILD_DIR}/test" |
| LD_LIBRARY_PATH="${BUILD_DIR}/lib:${LD_LIBRARY_PATH}" \ |
| CC="clang++ $(get_abi_CFLAGS) ${CXXFLAGS}" \ |
| HEADER_INCLUDE="-I${BUILD_DIR}/include" \ |
| SOURCE_LIB="-L${BUILD_DIR}/lib" \ |
| LIBS="-lm $(usex libcxxrt -lcxxrt "")" \ |
| ./testit || die |
| # TODO: fix link against libsupc++ |
| } |
| |
| # Usage: deps |
| gen_ldscript() { |
| local output_format |
| output_format=$($(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 ( $@ ) |
| END_LDSCRIPT |
| } |
| |
| gen_static_ldscript() { |
| if use libcxxrt ; then |
| # Move it first. |
| mv "${ED}/usr/$(get_libdir)/libc++.a" "${ED}/usr/$(get_libdir)/libc++_static.a" || die |
| |
| # Generate libc++.a ldscript for inclusion of its dependencies so that |
| # clang++ -stdlib=libc++ -static works out of the box. |
| local deps="${EPREFIX}/usr/$(get_libdir)/libc++_static.a ${EPREFIX}/usr/$(get_libdir)/libcxxrt.a" |
| # On Linux/glibc it does not link without libpthread or libdl. It is |
| # fine on FreeBSD. |
| use elibc_glibc && deps="${deps} ${EPREFIX}/usr/$(get_libdir)/libpthread.a ${EPREFIX}/usr/$(get_libdir)/libdl.a" |
| |
| gen_ldscript "${deps}" > "${ED}/usr/$(get_libdir)/libc++.a" |
| fi |
| # TODO: Generate a libc++.a ldscript when building against libsupc++ |
| } |
| |
| gen_shared_ldscript() { |
| if use libcxxrt ; then |
| mv "${ED}/usr/$(get_libdir)/libc++.so" "${ED}/usr/$(get_libdir)/libc++_shared.so" || die |
| local deps="${EPREFIX}/usr/$(get_libdir)/libc++_shared.so ${EPREFIX}/usr/$(get_libdir)/libcxxrt.so" |
| gen_ldscript "${deps}" > "${ED}/usr/$(get_libdir)/libc++.so" |
| fi |
| # TODO: Generate the linker script for other confiurations too. |
| } |
| |
| multilib_src_install() { |
| cd "${BUILD_DIR}/lib" |
| if use static-libs ; then |
| dolib.a libc++.a |
| gen_static_ldscript |
| fi |
| dolib.so libc++.so* |
| gen_shared_ldscript |
| } |
| |
| multilib_src_install_all() { |
| einstalldocs |
| insinto /usr/include/c++/v1 |
| doins -r include/* |
| } |
| |
| 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." |
| } |