2018-02-09 00:58:12 +03:00
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{
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"stages": "1",
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"build_libcxx": true,
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"build_type": "Release",
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"assertions": false,
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"osx_cross_compile": true,
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"python_path": "/usr/bin/python2.7",
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2019-08-09 05:03:29 +03:00
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"gcc_dir": "{MOZ_FETCHES_DIR}/gcc",
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"cc": "{MOZ_FETCHES_DIR}/clang/bin/clang",
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"cxx": "{MOZ_FETCHES_DIR}/clang/bin/clang++",
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"as": "{MOZ_FETCHES_DIR}/clang/bin/clang",
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"ar": "{MOZ_FETCHES_DIR}/cctools/bin/x86_64-apple-darwin-ar",
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"ranlib": "{MOZ_FETCHES_DIR}/cctools/bin/x86_64-apple-darwin-ranlib",
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"libtool": "{MOZ_FETCHES_DIR}/cctools/bin/x86_64-apple-darwin-libtool",
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"ld": "{MOZ_FETCHES_DIR}/clang/bin/clang",
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2018-02-09 00:58:12 +03:00
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"patches": [
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Bug 1492037 - Build clang with LLVM as a shared library. r=froydnj
Doing so changes the size of the compressed toolchain archive from ~280M
to ~120M, and the decompressed size from ~1500M to ~675M. This will
reduce the overhead of decompression during builds.
As we ship llvm-symbolizer as part of ASan builds, we do need it to
still statically link against LLVM, which we do with a small patch.
With LLVM as a shared library, libLTO, which is used by cctools-port for
the linker, is dynamically linked to LLVM, and the cctools-port
configure script fails to link against libLTO. So we add a -rpath-link
to make it find the LLVM library. This happens to force a rebuild of
cctools-port, but for future cases where we might need a rebuild because
of some clang changes, we add a comment to ease the process, and avoid
a newer cctools-port taking the cache spot of an older one.
Ideally, mac cctools-port would need something similar, but it needs a
mac libLTO.dylib, which is not there anyways (and the mac cctools-port
thus already didn't support LTO).
Also, with LLVM built as a shared library, all its symbols are exported
with a LLVM_x.y version. Combined with -static-libstdc++ that is used
during the clang build, this causes problems (see
https://bugzilla.mozilla.org/show_bug.cgi?id=1492037#c7). But it turns
out things have evolved since -static-libstdc++ has been added to the
clang build script, and things work without now, so remove it (as well
as -static-libgcc).
Differential Revision: https://phabricator.services.mozilla.com/D6117
2018-09-10 01:41:35 +03:00
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"static-llvm-symbolizer.patch",
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2019-04-02 14:45:25 +03:00
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"rename_gcov_flush.patch",
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2018-02-09 00:58:12 +03:00
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"compiler-rt-cross-compile.patch",
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2019-04-02 05:18:10 +03:00
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"compiler-rt-no-codesign.patch"
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2018-02-09 00:58:12 +03:00
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]
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}
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