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[CMake] Add DARWIN_LTO_LIBRARY option to allow overriding -lto_library.
llvm-svn: 247308
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@ -543,6 +543,13 @@ else(UNIX)
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endif(NOT DEFINED CMAKE_INSTALL_RPATH)
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endif()
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if(APPLE AND DARWIN_LTO_LIBRARY)
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set(CMAKE_EXE_LINKER_FLAGS
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"${CMAKE_EXE_LINKER_FLAGS} -Wl,-lto_library -Wl,${DARWIN_LTO_LIBRARY}")
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set(CMAKE_SHARED_LINKER_FLAGS
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"${CMAKE_SHARED_LINKER_FLAGS} -Wl,-lto_library -Wl,${DARWIN_LTO_LIBRARY}")
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endif()
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# Work around a broken bfd ld behavior. When linking a binary with a
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# foo.so library, it will try to find any library that foo.so uses and
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# check its symbols. This is wasteful (the check was done when foo.so
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