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# Copyright 1999-2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-libs/libcxx/libcxx-0.0_p20130531-r1.ebuild,v 1.4 2013/07/02 21:56:24 aballier Exp $
EAPI=5
ESVN_REPO_URI="http://llvm.org/svn/llvm-project/libcxx/trunk"
[ "${PV%9999}" != "${PV}" ] && SCM="subversion" || SCM=""
inherit cmake-utils ${SCM} base flag-o-matic toolchain-funcs multilib
DESCRIPTION="New implementation of the C++ standard library, targeting C++11"
HOMEPAGE="http://libcxx.llvm.org/"
if [ "${PV%9999}" = "${PV}" ] ; then
SRC_URI="mirror://gentoo/${P}.tar.xz"
else
SRC_URI=""
fi
LICENSE="|| ( UoI-NCSA MIT )"
SLOT="0"
if [ "${PV%9999}" = "${PV}" ] ; then
KEYWORDS="~amd64 ~x86 ~amd64-fbsd ~amd64-linux ~x86-linux"
else
KEYWORDS=""
fi
IUSE="elibc_glibc +libcxxrt static-libs"
RDEPEND="libcxxrt? ( >=sys-libs/libcxxrt-0.0_p20130530[static-libs?] )
!libcxxrt? ( sys-devel/gcc[cxx] )"
DEPEND="${RDEPEND}
sys-devel/clang
app-arch/xz-utils"
PATCHES=( "${FILESDIR}/multilib.patch" )
DOCS=( "CREDITS.TXT" )
src_prepare() {
use libcxxrt && PATCHES+=( "${FILESDIR}/cxxrt.patch" )
base_src_prepare
}
src_configure() {
local mycmakeargs_base=( )
if use libcxxrt ; then
mycmakeargs_base=(
-DLIBCXX_CXX_ABI=libcxxrt
-DLIBCXX_LIBCXXRT_INCLUDE_PATHS="/usr/include/libcxxrt/"
)
else
# Very hackish, see $HOMEPAGE
# If someone has a clever idea, please share it!
local includes="$(echo | "$(tc-getCXX)" -Wp,-v -x c++ - -fsyntax-only 2>&1 | grep -C 2 '#include.*<...>' | tail -n 2 | tr '\n' ';' | tr -d ' ')"
mycmakeargs_base=(
-DLIBCXX_CXX_ABI=libsupc++
-DLIBCXX_LIBSUPCXX_INCLUDE_PATHS="${includes}"
)
fi
# Needs to be built with clang. gcc-4.6.3 fails at least.
# TODO: cross-compile ?
export CC="clang"
export CXX="clang++"
if use static-libs ; then
local mycmakeargs=( "${mycmakeargs_base[@]}" "-DLIBCXX_ENABLE_SHARED=OFF" )
BUILD_DIR="${S}_static" cmake-utils_src_configure
fi
local mycmakeargs=( "${mycmakeargs_base[@]}" )
BUILD_DIR="${S}_shared" cmake-utils_src_configure
}
src_compile() {
use static-libs && BUILD_DIR="${S}_static" cmake-utils_src_compile
BUILD_DIR="${S}_shared" cmake-utils_src_compile
}
# Tests fail for now, if anybody is able to fix them, help is very welcome.
src_test() {
cd "${S}/test"
LD_LIBRARY_PATH="${S}_shared/lib:${LD_LIBRARY_PATH}" \
CC="clang++" \
HEADER_INCLUDE="-I${S}/include" \
SOURCE_LIB="-L${S}_shared/lib" \
LIBS="-lm" \
./testit || die
}
gen_static_ldscript() {
if use libcxxrt ; then
# Move it first.
mv "${D}/${EPREFIX}/usr/$(get_libdir)/libc++.a" "${D}/${EPREFIX}/usr/$(get_libdir)/libc++_static.a" || die
# Generate libc++.a ldscript for inclusion of its dependencies so that
# clang++ -stdlib=libc++ -static works out of the box.
# Taken from toolchain-funcs.eclass:
local output_format
output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
[[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
local deps="${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"
cat > "${D}/${EPREFIX}/usr/$(get_libdir)/libc++.a" <<-END_LDSCRIPT
/* GNU ld script
Include libc++.a dependencies for 'clang++ -stdlib=libc++ -static' to work
out of the box.
*/
${output_format}
GROUP ( ${deps} )
END_LDSCRIPT
fi
# TODO: Generate a libc++.a ldscript when building against libsupc++
}
src_install() {
if use static-libs ; then
BUILD_DIR="${S}_static" cmake-utils_src_install
gen_static_ldscript
fi
BUILD_DIR="${S}_shared" cmake-utils_src_install
}
pkg_postinst() {
elog "This package (${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."
}
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