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- diff --git a/CMakeLists.txt b/CMakeLists.txt
- index d618e83..0e76525 100644
- --- a/CMakeLists.txt
- +++ b/CMakeLists.txt
- @@ -293,6 +293,18 @@ remove_flags(-DNDEBUG -UNDEBUG -D_DEBUG
- # so they don't get transformed into -Wno and -errors respectivly.
- remove_flags(-Wno-pedantic -pedantic-errors -pedantic)
-
- +# FIXME: this is cribbed from HandleLLVMOptions.cmake.
- +if(LIBCXX_STANDALONE_BUILD)
- + # Pass -Wl,-z,defs. This makes sure all symbols are defined. Otherwise a DSO
- + # build might work on ELF but fail on MachO/COFF.
- + if(NOT (${CMAKE_SYSTEM_NAME} MATCHES "Darwin" OR WIN32 OR CYGWIN OR
- + ${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD" OR
- + ${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD") AND
- + NOT LLVM_USE_SANITIZER)
- + set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-z,defs")
- + endif()
- +endif()
- +
- # Required flags ==============================================================
- add_compile_flags_if_supported(-std=c++11)
- if (NOT MSVC AND NOT LIBCXX_SUPPORTS_STD_EQ_CXX11_FLAG)
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