Gentoo Archives: gentoo-commits

From: Alexis Ballier <aballier@g.o>
To: gentoo-commits@l.g.o
Subject: [gentoo-commits] repo/gentoo:master commit in: sys-libs/libcxx/files/, sys-libs/libcxx/
Date: Mon, 03 Oct 2016 08:51:33
Message-Id: 1475484680.600a473dc06a2527981b2e9ecc91a69774cd04f6.aballier@gentoo
1 commit: 600a473dc06a2527981b2e9ecc91a69774cd04f6
2 Author: Lei Zhang <zhanglei.april <AT> gmail <DOT> com>
3 AuthorDate: Sat Sep 3 11:28:24 2016 +0000
4 Commit: Alexis Ballier <aballier <AT> gentoo <DOT> org>
5 CommitDate: Mon Oct 3 08:51:20 2016 +0000
6 URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=600a473d
7
8 sys-libs/libcxx: update live ebuild to use cmake
9
10 Notable changes:
11 - gcc is now required to build libcxx against libsupc++
12 - keyword ~mips is dropped to be compatible with clang/llvm
13
14 .../libcxx/files/libcxx-3.9-cmake-link-flags.patch | 23 +++
15 sys-libs/libcxx/libcxx-9999.ebuild | 216 +++++++++++----------
16 2 files changed, 139 insertions(+), 100 deletions(-)
17
18 diff --git a/sys-libs/libcxx/files/libcxx-3.9-cmake-link-flags.patch b/sys-libs/libcxx/files/libcxx-3.9-cmake-link-flags.patch
19 new file mode 100644
20 index 00000000..bef5bc1
21 --- /dev/null
22 +++ b/sys-libs/libcxx/files/libcxx-3.9-cmake-link-flags.patch
23 @@ -0,0 +1,23 @@
24 +diff --git a/CMakeLists.txt b/CMakeLists.txt
25 +index d618e83..0e76525 100644
26 +--- a/CMakeLists.txt
27 ++++ b/CMakeLists.txt
28 +@@ -293,6 +293,18 @@ remove_flags(-DNDEBUG -UNDEBUG -D_DEBUG
29 + # so they don't get transformed into -Wno and -errors respectivly.
30 + remove_flags(-Wno-pedantic -pedantic-errors -pedantic)
31 +
32 ++# FIXME: this is cribbed from HandleLLVMOptions.cmake.
33 ++if(LIBCXX_STANDALONE_BUILD)
34 ++ # Pass -Wl,-z,defs. This makes sure all symbols are defined. Otherwise a DSO
35 ++ # build might work on ELF but fail on MachO/COFF.
36 ++ if(NOT (${CMAKE_SYSTEM_NAME} MATCHES "Darwin" OR WIN32 OR CYGWIN OR
37 ++ ${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD" OR
38 ++ ${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD") AND
39 ++ NOT LLVM_USE_SANITIZER)
40 ++ set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-z,defs")
41 ++ endif()
42 ++endif()
43 ++
44 + # Required flags ==============================================================
45 + add_compile_flags_if_supported(-std=c++11)
46 + if (NOT MSVC AND NOT LIBCXX_SUPPORTS_STD_EQ_CXX11_FLAG)
47
48 diff --git a/sys-libs/libcxx/libcxx-9999.ebuild b/sys-libs/libcxx/libcxx-9999.ebuild
49 index 06a6211..dc867aa 100644
50 --- a/sys-libs/libcxx/libcxx-9999.ebuild
51 +++ b/sys-libs/libcxx/libcxx-9999.ebuild
52 @@ -2,108 +2,134 @@
53 # Distributed under the terms of the GNU General Public License v2
54 # $Id$
55
56 -EAPI=5
57 +EAPI=6
58
59 -ESVN_REPO_URI="http://llvm.org/svn/llvm-project/libcxx/trunk"
60 +# Ninja provides better scalability and cleaner verbose output, and is used
61 +# throughout all LLVM projects.
62 +: ${CMAKE_MAKEFILE_GENERATOR:=ninja}
63 +EGIT_REPO_URI="http://llvm.org/git/libcxx.git
64 + https://github.com/llvm-mirror/libcxx.git"
65 +CMAKE_MIN_VERSION=3.4.3
66 +PYTHON_COMPAT=( python2_7 )
67
68 -[ "${PV%9999}" != "${PV}" ] && SCM="subversion" || SCM=""
69 +[[ ${PV} == 9999 ]] && SCM="git-r3" || SCM=""
70
71 -inherit ${SCM} flag-o-matic toolchain-funcs multilib multilib-minimal
72 +inherit ${SCM} cmake-multilib python-any-r1 toolchain-funcs
73
74 DESCRIPTION="New implementation of the C++ standard library, targeting C++11"
75 HOMEPAGE="http://libcxx.llvm.org/"
76 -if [ "${PV%9999}" = "${PV}" ] ; then
77 - SRC_URI="http://llvm.org/releases/${PV}/${P}.src.tar.xz"
78 +if [[ ${PV} != 9999 ]] ; then
79 + SRC_URI="http://llvm.org/releases/${PV}/${P}.src.tar.xz
80 + test? ( http://llvm.org/releases/${PV}/llvm-${PV}.src.tar.xz )"
81 S="${WORKDIR}/${P}.src"
82 + LLVM_S="${WORKDIR}/llvm-${PV}.src"
83 else
84 SRC_URI=""
85 + LLVM_S="${WORKDIR}/llvm"
86 fi
87
88 LICENSE="|| ( UoI-NCSA MIT )"
89 SLOT="0"
90 -if [ "${PV%9999}" = "${PV}" ] ; then
91 - KEYWORDS="~amd64 ~mips ~x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x86-linux"
92 +if [[ ${PV} != 9999 ]] ; then
93 + KEYWORDS="~amd64 ~x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x86-linux"
94 else
95 KEYWORDS=""
96 fi
97 IUSE="elibc_glibc elibc_musl +libcxxrt libunwind +static-libs test"
98 REQUIRED_USE="libunwind? ( libcxxrt )"
99
100 -RDEPEND="libcxxrt? ( >=sys-libs/libcxxrt-0.0_p20130725[libunwind?,static-libs?,${MULTILIB_USEDEP}] )
101 +RDEPEND="libcxxrt? ( sys-libs/libcxxrt[libunwind=,static-libs?,${MULTILIB_USEDEP}] )
102 !libcxxrt? ( >=sys-devel/gcc-4.7:=[cxx] )"
103 +# llvm-3.9.0 needed because its cmake files installation path changed, which is
104 +# needed by libcxx
105 DEPEND="${RDEPEND}
106 - test? ( sys-devel/clang )
107 - app-arch/xz-utils"
108 + test? ( sys-devel/clang[${MULTILIB_USEDEP}]
109 + ${PYTHON_DEPS} )
110 + app-arch/xz-utils
111 + >=sys-devel/llvm-3.9.0[${MULTILIB_USEDEP}]"
112
113 DOCS=( CREDITS.TXT )
114
115 +PATCHES=(
116 + # Add link flag "-Wl,-z,defs" to avoid underlinking; this is needed in a
117 + # out-of-tree build.
118 + "${FILESDIR}/${PN}-3.9-cmake-link-flags.patch"
119 +)
120 +
121 pkg_setup() {
122 - if ! use libcxxrt ; then
123 - ewarn "You have disabled USE=libcxxrt. This will build ${PN} against"
124 - ewarn "libsupc++. Please note that this is not well supported."
125 - ewarn "In particular, static linking will not work."
126 + use test && python_setup
127 +
128 + if ! use libcxxrt && ! tc-is-gcc ; then
129 + eerror "To build ${PN} against libsupc++, you have to use gcc. Other"
130 + eerror "compilers are not supported. Please set CC=gcc and CXX=g++"
131 + eerror "and try again."
132 + die
133 fi
134 - if [[ $(gcc-version) < 4.7 ]] && [[ $(tc-getCXX) != *clang++* ]] ; then
135 - eerror "${PN} needs to be built with clang++ or gcc-4.7 or later."
136 - eerror "Please use gcc-config to switch to gcc-4.7 or later version."
137 + if tc-is-gcc && [[ $(gcc-version) < 4.7 ]] ; then
138 + eerror "${PN} needs to be built with gcc-4.7 or later (or other"
139 + eerror "conformant compilers). Please use gcc-config to switch to"
140 + eerror "gcc-4.7 or later version."
141 die
142 fi
143 }
144
145 -src_prepare() {
146 - cp -f "${FILESDIR}/Makefile" lib/ || die
147 - use elibc_musl && epatch "${FILESDIR}/${P}-musl-support.patch"
148 - multilib_copy_sources
149 -}
150 +src_unpack() {
151 + [[ ${PV} != 9999 ]] && default && return
152
153 -src_configure() {
154 - export LIBS="-lpthread -lrt -lc -l$(usex libunwind unwind gcc_s)"
155 - if use libcxxrt ; then
156 - append-cppflags -DLIBCXXRT "-I${EPREFIX}/usr/include/libcxxrt/"
157 - LIBS="-lcxxrt ${LIBS}"
158 - cp "${EPREFIX}/usr/include/libcxxrt/"*.h "${S}/include"
159 - else
160 - # Very hackish, see $HOMEPAGE
161 - # If someone has a clever idea, please share it!
162 - local includes="$(echo | ${CHOST}-g++ -Wp,-v -x c++ - -fsyntax-only 2>&1 | grep -C 2 '#include.*<...>' | tail -n 2 | sed -e 's/^ /-I/' | tr '\n' ' ')"
163 - local libcxx_gcc_dirs="$(echo | ${CHOST}-g++ -Wp,-v -x c++ - -fsyntax-only 2>&1 | grep -C 2 '#include.*<...>' | tail -n 2 | tr '\n' ' ')"
164 - append-cppflags -D__GLIBCXX__ ${includes}
165 - LIBS="-lsupc++ ${LIBS}"
166 - 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"
167 - for i in ${libsupcxx_includes} ; do
168 - local found=""
169 - [ -d "${S}/include/$(dirname ${i})/" ] || mkdir -p "${S}/include/$(dirname ${i})"
170 - for j in ${libcxx_gcc_dirs} ; do
171 - if [ -f "${j}/${i}" ] ; then
172 - cp "${j}/${i}" "${S}/include/$(dirname ${i})/" || die
173 - found=yes
174 - fi
175 - done
176 - [ -n "${found}" ] || die "Header not found: ${i}"
177 - done
178 + if use test; then
179 + # needed for tests
180 + git-r3_fetch "http://llvm.org/git/llvm.git
181 + https://github.com/llvm-mirror/llvm.git"
182 fi
183 + git-r3_fetch
184
185 - tc-export AR CC CXX
186 -
187 - append-ldflags "-Wl,-z,defs" # make sure we are not underlinked
188 + if use test; then
189 + git-r3_checkout http://llvm.org/git/llvm.git \
190 + "${WORKDIR}"/llvm
191 + fi
192 + git-r3_checkout
193 }
194
195 -multilib_src_compile() {
196 - cd "${BUILD_DIR}/lib" || die
197 - emake shared
198 - use static-libs && emake static
199 +multilib_src_configure() {
200 + local cxxabi cxxabi_incs
201 + if use libcxxrt; then
202 + cxxabi=libcxxrt
203 + cxxabi_incs="${EPREFIX}/usr/include/libcxxrt"
204 + else
205 + local gcc_inc="${EPREFIX}/usr/lib/gcc/${CHOST}/$(gcc-fullversion)/include/g++-v$(gcc-major-version)"
206 + cxxabi=libsupc++
207 + cxxabi_incs="${gcc_inc};${gcc_inc}/${CHOST}"
208 + fi
209 +
210 + local libdir=$(get_libdir)
211 + local mycmakeargs=(
212 + -DLLVM_LIBDIR_SUFFIX=${libdir#lib}
213 + -DLIBCXX_ENABLE_SHARED=ON
214 + -DLIBCXX_ENABLE_STATIC=$(usex static-libs)
215 + -DLIBCXX_CXX_ABI=${cxxabi}
216 + -DLIBCXX_CXX_ABI_INCLUDE_PATHS=${cxxabi_incs}
217 + # we're using our own mechanism for generating linker scripts
218 + -DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
219 + -DLIBCXX_HAS_MUSL_LIBC=$(usex elibc_musl)
220 + -DLIBCXX_HAS_GCC_S_LIB=$(usex !libunwind)
221 + -DLIBCXX_INCLUDE_TESTS=$(usex test)
222 + -DCMAKE_SHARED_LINKER_FLAGS=$(usex libunwind "-lunwind" "")
223 + )
224 + if use test; then
225 + mycmakeargs+=(
226 + -DLLVM_MAIN_SRC_DIR=${LLVM_S}
227 + )
228 + fi
229 + cmake-utils_src_configure
230 }
231
232 -# Tests fail for now, if anybody is able to fix them, help is very welcome.
233 multilib_src_test() {
234 - cd "${BUILD_DIR}/test"
235 - LD_LIBRARY_PATH="${BUILD_DIR}/lib:${LD_LIBRARY_PATH}" \
236 - CC="clang++ $(get_abi_CFLAGS) ${CXXFLAGS}" \
237 - HEADER_INCLUDE="-I${BUILD_DIR}/include" \
238 - SOURCE_LIB="-L${BUILD_DIR}/lib" \
239 - LIBS="-lm $(usex libcxxrt -lcxxrt "")" \
240 - ./testit || die
241 - # TODO: fix link against libsupc++
242 + local clang_path=$(type -P "${CHOST:+${CHOST}-}clang" 2>/dev/null)
243 +
244 + [[ -n ${clang_path} ]] || die "Unable to find ${CHOST}-clang for tests"
245 + sed -i -e "/cxx_under_test/s^\".*\"^\"${clang_path}\"^" test/lit.site.cfg || die
246 +
247 + cmake-utils_src_make check-libcxx
248 }
249
250 # Usage: deps
251 @@ -122,49 +148,39 @@ END_LDSCRIPT
252 }
253
254 gen_static_ldscript() {
255 - if use libcxxrt ; then
256 - # Move it first.
257 - mv "${ED}/usr/$(get_libdir)/libc++.a" "${ED}/usr/$(get_libdir)/libc++_static.a" || die
258 -
259 - # Generate libc++.a ldscript for inclusion of its dependencies so that
260 - # clang++ -stdlib=libc++ -static works out of the box.
261 - local deps="${EPREFIX}/usr/$(get_libdir)/libc++_static.a ${EPREFIX}/usr/$(get_libdir)/libcxxrt.a"
262 - # On Linux/glibc it does not link without libpthread or libdl. It is
263 - # fine on FreeBSD.
264 - use elibc_glibc && deps="${deps} ${EPREFIX}/usr/$(get_libdir)/libpthread.a ${EPREFIX}/usr/$(get_libdir)/libdl.a"
265 -
266 - # unlike libgcc_s, libunwind is not implicitly linked
267 - use libunwind && deps="${deps} ${EPREFIX}/usr/$(get_libdir)/libunwind.a"
268 -
269 - gen_ldscript "${deps}" > "${ED}/usr/$(get_libdir)/libc++.a"
270 - fi
271 - # TODO: Generate a libc++.a ldscript when building against libsupc++
272 + local libdir=$(get_libdir)
273 + local cxxabi_lib=$(usex libcxxrt "libcxxrt.a" "libsupc++.a")
274 +
275 + # Move it first.
276 + mv "${ED}/usr/${libdir}/libc++.a" "${ED}/usr/${libdir}/libc++_static.a" || die
277 + # Generate libc++.a ldscript for inclusion of its dependencies so that
278 + # clang++ -stdlib=libc++ -static works out of the box.
279 + local deps="libc++_static.a ${cxxabi_lib}"
280 + # On Linux/glibc it does not link without libpthread or libdl. It is
281 + # fine on FreeBSD.
282 + use elibc_glibc && deps+=" libpthread.a libdl.a"
283 + # unlike libgcc_s, libunwind is not implicitly linked
284 + use libunwind && deps+=" libunwind.a"
285 +
286 + gen_ldscript "${deps}" > "${ED}/usr/${libdir}/libc++.a" || die
287 }
288
289 gen_shared_ldscript() {
290 - if use libcxxrt ; then
291 - mv "${ED}/usr/$(get_libdir)/libc++.so" "${ED}/usr/$(get_libdir)/libc++_shared.so" || die
292 - local deps="${EPREFIX}/usr/$(get_libdir)/libc++_shared.so ${EPREFIX}/usr/$(get_libdir)/libcxxrt.so"
293 - use libunwind && deps="${deps} ${EPREFIX}/usr/$(get_libdir)/libunwind.so"
294 - gen_ldscript "${deps}" > "${ED}/usr/$(get_libdir)/libc++.so"
295 - fi
296 - # TODO: Generate the linker script for other configurations too.
297 + local libdir=$(get_libdir)
298 + # libsupc++ doesn't have a shared version
299 + local cxxabi_lib=$(usex libcxxrt "libcxxrt.so" "libsupc++.a")
300 +
301 + mv "${ED}/usr/${libdir}/libc++.so" "${ED}/usr/${libdir}/libc++_shared.so" || die
302 + local deps="libc++_shared.so ${cxxabi_lib}"
303 + use libunwind && deps+=" libunwind.so"
304 +
305 + gen_ldscript "${deps}" > "${ED}/usr/${libdir}/libc++.so" || die
306 }
307
308 multilib_src_install() {
309 - cd "${BUILD_DIR}/lib"
310 - if use static-libs ; then
311 - dolib.a libc++.a
312 - gen_static_ldscript
313 - fi
314 - dolib.so libc++.so*
315 + cmake-utils_src_install
316 gen_shared_ldscript
317 -}
318 -
319 -multilib_src_install_all() {
320 - einstalldocs
321 - insinto /usr/include/c++/v1
322 - doins -r include/*
323 + use static-libs && gen_static_ldscript
324 }
325
326 pkg_postinst() {