1 |
commit: 9d598b0bfe83031f928d37d4618c4d137ed5d2cd |
2 |
Author: Michał Górny <mgorny <AT> gentoo <DOT> org> |
3 |
AuthorDate: Wed Aug 1 16:45:05 2018 +0000 |
4 |
Commit: Michał Górny <mgorny <AT> gentoo <DOT> org> |
5 |
CommitDate: Wed Aug 1 20:53:23 2018 +0000 |
6 |
URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=9d598b0b |
7 |
|
8 |
sys-libs/libcxx: Branch out LLVM 7.0 |
9 |
|
10 |
sys-libs/libcxx/libcxx-7.0.9999.ebuild | 225 +++++++++++++++++++++++++++++++++ |
11 |
1 file changed, 225 insertions(+) |
12 |
|
13 |
diff --git a/sys-libs/libcxx/libcxx-7.0.9999.ebuild b/sys-libs/libcxx/libcxx-7.0.9999.ebuild |
14 |
new file mode 100644 |
15 |
index 00000000000..64bc9accf26 |
16 |
--- /dev/null |
17 |
+++ b/sys-libs/libcxx/libcxx-7.0.9999.ebuild |
18 |
@@ -0,0 +1,225 @@ |
19 |
+# Copyright 1999-2018 Gentoo Foundation |
20 |
+# Distributed under the terms of the GNU General Public License v2 |
21 |
+ |
22 |
+EAPI=6 |
23 |
+ |
24 |
+# Ninja provides better scalability and cleaner verbose output, and is used |
25 |
+# throughout all LLVM projects. |
26 |
+: ${CMAKE_MAKEFILE_GENERATOR:=ninja} |
27 |
+# (needed due to CMAKE_BUILD_TYPE != Gentoo) |
28 |
+CMAKE_MIN_VERSION=3.7.0-r1 |
29 |
+EGIT_REPO_URI="https://git.llvm.org/git/libcxx.git |
30 |
+ https://github.com/llvm-mirror/libcxx.git" |
31 |
+EGIT_BRANCH="release_70" |
32 |
+PYTHON_COMPAT=( python2_7 ) |
33 |
+ |
34 |
+[[ ${PV} == *9999 ]] && SCM="git-r3" || SCM="" |
35 |
+ |
36 |
+inherit ${SCM} cmake-multilib llvm multiprocessing python-any-r1 \ |
37 |
+ toolchain-funcs |
38 |
+ |
39 |
+DESCRIPTION="New implementation of the C++ standard library, targeting C++11" |
40 |
+HOMEPAGE="https://libcxx.llvm.org/" |
41 |
+if [[ ${PV} != *9999 ]] ; then |
42 |
+ SRC_URI="https://llvm.org/releases/${PV}/${P}.src.tar.xz" |
43 |
+ S="${WORKDIR}/${P}.src" |
44 |
+else |
45 |
+ SRC_URI="" |
46 |
+fi |
47 |
+ |
48 |
+LICENSE="|| ( UoI-NCSA MIT )" |
49 |
+SLOT="0" |
50 |
+if [[ ${PV} != *9999 ]] ; then |
51 |
+ KEYWORDS="~amd64 ~x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x86-linux" |
52 |
+else |
53 |
+ KEYWORDS="" |
54 |
+fi |
55 |
+IUSE="elibc_glibc elibc_musl +libcxxabi libcxxrt +libunwind +static-libs test" |
56 |
+REQUIRED_USE="libunwind? ( || ( libcxxabi libcxxrt ) ) |
57 |
+ ?? ( libcxxabi libcxxrt )" |
58 |
+RESTRICT="!test? ( test )" |
59 |
+ |
60 |
+RDEPEND=" |
61 |
+ libcxxabi? ( ~sys-libs/libcxxabi-${PV}[libunwind=,static-libs?,${MULTILIB_USEDEP}] ) |
62 |
+ libcxxrt? ( sys-libs/libcxxrt[libunwind=,static-libs?,${MULTILIB_USEDEP}] ) |
63 |
+ !libcxxabi? ( !libcxxrt? ( >=sys-devel/gcc-4.7:=[cxx] ) )" |
64 |
+# llvm-6 for new lit options |
65 |
+# clang-3.9.0 installs necessary target symlinks unconditionally |
66 |
+# which removes the need for MULTILIB_USEDEP |
67 |
+DEPEND="${RDEPEND} |
68 |
+ test? ( >=sys-devel/clang-3.9.0 |
69 |
+ $(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]') ) |
70 |
+ app-arch/xz-utils |
71 |
+ >=sys-devel/llvm-6" |
72 |
+ |
73 |
+DOCS=( CREDITS.TXT ) |
74 |
+ |
75 |
+PATCHES=( |
76 |
+ # Add link flag "-Wl,-z,defs" to avoid underlinking; this is needed in a |
77 |
+ # out-of-tree build. |
78 |
+ "${FILESDIR}/${PN}-3.9-cmake-link-flags.patch" |
79 |
+) |
80 |
+ |
81 |
+# least intrusive of all |
82 |
+CMAKE_BUILD_TYPE=RelWithDebInfo |
83 |
+ |
84 |
+python_check_deps() { |
85 |
+ has_version "dev-python/lit[${PYTHON_USEDEP}]" |
86 |
+} |
87 |
+ |
88 |
+pkg_setup() { |
89 |
+ llvm_pkg_setup |
90 |
+ use test && python-any-r1_pkg_setup |
91 |
+ |
92 |
+ if ! use libcxxabi && ! use libcxxrt && ! tc-is-gcc ; then |
93 |
+ eerror "To build ${PN} against libsupc++, you have to use gcc. Other" |
94 |
+ eerror "compilers are not supported. Please set CC=gcc and CXX=g++" |
95 |
+ eerror "and try again." |
96 |
+ die |
97 |
+ fi |
98 |
+ if tc-is-gcc && [[ $(gcc-version) < 4.7 ]] ; then |
99 |
+ eerror "${PN} needs to be built with gcc-4.7 or later (or other" |
100 |
+ eerror "conformant compilers). Please use gcc-config to switch to" |
101 |
+ eerror "gcc-4.7 or later version." |
102 |
+ die |
103 |
+ fi |
104 |
+} |
105 |
+ |
106 |
+test_compiler() { |
107 |
+ $(tc-getCXX) ${CXXFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c++ - \ |
108 |
+ <<<'int main() { return 0; }' &>/dev/null |
109 |
+} |
110 |
+ |
111 |
+multilib_src_configure() { |
112 |
+ local cxxabi cxxabi_incs |
113 |
+ if use libcxxabi; then |
114 |
+ cxxabi=libcxxabi |
115 |
+ cxxabi_incs="${EPREFIX}/usr/include/libcxxabi" |
116 |
+ elif use libcxxrt; then |
117 |
+ cxxabi=libcxxrt |
118 |
+ cxxabi_incs="${EPREFIX}/usr/include/libcxxrt" |
119 |
+ else |
120 |
+ local gcc_inc="${EPREFIX}/usr/lib/gcc/${CHOST}/$(gcc-fullversion)/include/g++-v$(gcc-major-version)" |
121 |
+ cxxabi=libsupc++ |
122 |
+ cxxabi_incs="${gcc_inc};${gcc_inc}/${CHOST}" |
123 |
+ fi |
124 |
+ |
125 |
+ # we want -lgcc_s for unwinder, and for compiler runtime when using |
126 |
+ # gcc, clang with gcc runtime (or any unknown compiler) |
127 |
+ local extra_libs=() want_gcc_s=ON |
128 |
+ if use libunwind; then |
129 |
+ # work-around missing -lunwind upstream |
130 |
+ extra_libs+=( -lunwind ) |
131 |
+ # if we're using libunwind and clang with compiler-rt, we want |
132 |
+ # to link to compiler-rt instead of -lgcc_s |
133 |
+ if tc-is-clang; then |
134 |
+ # get the full library list out of 'pretend mode' |
135 |
+ # and grep it for libclang_rt references |
136 |
+ local args=( $($(tc-getCC) -### -x c - 2>&1 | tail -n 1) ) |
137 |
+ local i |
138 |
+ for i in "${args[@]}"; do |
139 |
+ if [[ ${i} == *libclang_rt* ]]; then |
140 |
+ want_gcc_s=OFF |
141 |
+ extra_libs+=( "${i}" ) |
142 |
+ fi |
143 |
+ done |
144 |
+ fi |
145 |
+ fi |
146 |
+ |
147 |
+ # bootstrap: cmake is unhappy if compiler can't link to stdlib |
148 |
+ local nolib_flags=( -nodefaultlibs -lc ) |
149 |
+ if ! test_compiler; then |
150 |
+ if test_compiler "${nolib_flags[@]}"; then |
151 |
+ local -x LDFLAGS="${LDFLAGS} ${nolib_flags[*]}" |
152 |
+ ewarn "${CXX} seems to lack runtime, trying with ${nolib_flags[*]}" |
153 |
+ fi |
154 |
+ fi |
155 |
+ |
156 |
+ local libdir=$(get_libdir) |
157 |
+ local mycmakeargs=( |
158 |
+ -DLIBCXX_LIBDIR_SUFFIX=${libdir#lib} |
159 |
+ -DLIBCXX_ENABLE_SHARED=ON |
160 |
+ -DLIBCXX_ENABLE_STATIC=$(usex static-libs) |
161 |
+ -DLIBCXX_CXX_ABI=${cxxabi} |
162 |
+ -DLIBCXX_CXX_ABI_INCLUDE_PATHS=${cxxabi_incs} |
163 |
+ # we're using our own mechanism for generating linker scripts |
164 |
+ -DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF |
165 |
+ -DLIBCXX_HAS_MUSL_LIBC=$(usex elibc_musl) |
166 |
+ -DLIBCXX_HAS_GCC_S_LIB=${want_gcc_s} |
167 |
+ -DLIBCXX_INCLUDE_TESTS=$(usex test) |
168 |
+ -DCMAKE_SHARED_LINKER_FLAGS="${extra_libs[*]} ${LDFLAGS}" |
169 |
+ ) |
170 |
+ |
171 |
+ if use test; then |
172 |
+ local clang_path=$(type -P "${CHOST:+${CHOST}-}clang" 2>/dev/null) |
173 |
+ local jobs=${LIT_JOBS:-$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")} |
174 |
+ |
175 |
+ [[ -n ${clang_path} ]] || die "Unable to find ${CHOST}-clang for tests" |
176 |
+ |
177 |
+ mycmakeargs+=( |
178 |
+ -DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit" |
179 |
+ -DLLVM_LIT_ARGS="-vv;-j;${jobs};--param=cxx_under_test=${clang_path}" |
180 |
+ ) |
181 |
+ fi |
182 |
+ cmake-utils_src_configure |
183 |
+} |
184 |
+ |
185 |
+multilib_src_test() { |
186 |
+ cmake-utils_src_make check-libcxx |
187 |
+} |
188 |
+ |
189 |
+# Usage: deps |
190 |
+gen_ldscript() { |
191 |
+ local output_format |
192 |
+ output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') |
193 |
+ [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" |
194 |
+ |
195 |
+ cat <<-END_LDSCRIPT |
196 |
+/* GNU ld script |
197 |
+ Include missing dependencies |
198 |
+*/ |
199 |
+${output_format} |
200 |
+GROUP ( $@ ) |
201 |
+END_LDSCRIPT |
202 |
+} |
203 |
+ |
204 |
+gen_static_ldscript() { |
205 |
+ local libdir=$(get_libdir) |
206 |
+ local cxxabi_lib=$(usex libcxxabi "libc++abi.a" "$(usex libcxxrt "libcxxrt.a" "libsupc++.a")") |
207 |
+ |
208 |
+ # Move it first. |
209 |
+ mv "${ED}/usr/${libdir}/libc++.a" "${ED}/usr/${libdir}/libc++_static.a" || die |
210 |
+ # Generate libc++.a ldscript for inclusion of its dependencies so that |
211 |
+ # clang++ -stdlib=libc++ -static works out of the box. |
212 |
+ local deps="libc++_static.a ${cxxabi_lib} $(usex libunwind libunwind.a libgcc_eh.a)" |
213 |
+ # On Linux/glibc it does not link without libpthread or libdl. It is |
214 |
+ # fine on FreeBSD. |
215 |
+ use elibc_glibc && deps+=" libpthread.a libdl.a" |
216 |
+ |
217 |
+ gen_ldscript "${deps}" > "${ED}/usr/${libdir}/libc++.a" || die |
218 |
+} |
219 |
+ |
220 |
+gen_shared_ldscript() { |
221 |
+ local libdir=$(get_libdir) |
222 |
+ # libsupc++ doesn't have a shared version |
223 |
+ local cxxabi_lib=$(usex libcxxabi "libc++abi.so" "$(usex libcxxrt "libcxxrt.so" "libsupc++.a")") |
224 |
+ |
225 |
+ mv "${ED}/usr/${libdir}/libc++.so" "${ED}/usr/${libdir}/libc++_shared.so" || die |
226 |
+ local deps="libc++_shared.so ${cxxabi_lib} $(usex libunwind libunwind.so libgcc_s.so)" |
227 |
+ |
228 |
+ gen_ldscript "${deps}" > "${ED}/usr/${libdir}/libc++.so" || die |
229 |
+} |
230 |
+ |
231 |
+multilib_src_install() { |
232 |
+ cmake-utils_src_install |
233 |
+ gen_shared_ldscript |
234 |
+ use static-libs && gen_static_ldscript |
235 |
+} |
236 |
+ |
237 |
+pkg_postinst() { |
238 |
+ elog "This package (${PN}) is mainly intended as a replacement for the C++" |
239 |
+ elog "standard library when using clang." |
240 |
+ elog "To use it, instead of libstdc++, use:" |
241 |
+ elog " clang++ -stdlib=libc++" |
242 |
+ elog "to compile your C++ programs." |
243 |
+} |