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8601096ed0
-stdlib=libc++ is added to both the compilation and the link flags, but the logic for adding it was only checking if it was supported during compilation and not linking. This could lead to false positives, for example when using clang with libstdc++ (where the compiler would support -stdlib=libc++ but then linking would fail because of libc++ actually being unavailable). llvm-svn: 330761
33 lines
1.0 KiB
CMake
33 lines
1.0 KiB
CMake
# This CMake module is responsible for setting the standard library to libc++
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# if the user has requested it.
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include(DetermineGCCCompatible)
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if(NOT DEFINED LLVM_STDLIB_HANDLED)
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set(LLVM_STDLIB_HANDLED ON)
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function(append value)
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foreach(variable ${ARGN})
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set(${variable} "${${variable}} ${value}" PARENT_SCOPE)
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endforeach(variable)
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endfunction()
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include(CheckCXXCompilerFlag)
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include(CheckLinkerFlag)
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if(LLVM_ENABLE_LIBCXX)
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if(LLVM_COMPILER_IS_GCC_COMPATIBLE)
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check_cxx_compiler_flag("-stdlib=libc++" CXX_COMPILER_SUPPORTS_STDLIB)
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check_linker_flag("-stdlib=libc++" CXX_LINKER_SUPPORTS_STDLIB)
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if(CXX_COMPILER_SUPPORTS_STDLIB AND CXX_LINKER_SUPPORTS_STDLIB)
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append("-stdlib=libc++"
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CMAKE_CXX_FLAGS CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS
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CMAKE_MODULE_LINKER_FLAGS)
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else()
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message(WARNING "Can't specify libc++ with '-stdlib='")
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endif()
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else()
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message(WARNING "Not sure how to specify libc++ for this compiler")
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endif()
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endif()
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endif()
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