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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 14 | pmbaty | 1 | # This CMake module is responsible for setting the standard library to libc++ |
| 2 | # if the user has requested it. |
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| 3 | |||
| 4 | include(DetermineGCCCompatible) |
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| 5 | |||
| 6 | if(NOT DEFINED LLVM_STDLIB_HANDLED) |
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| 7 | set(LLVM_STDLIB_HANDLED ON) |
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| 8 | |||
| 9 | function(append value) |
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| 10 | foreach(variable ${ARGN}) |
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| 11 | set(${variable} "${${variable}} ${value}" PARENT_SCOPE) |
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| 12 | endforeach(variable) |
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| 13 | endfunction() |
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| 14 | |||
| 15 | include(CheckCXXCompilerFlag) |
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| 16 | include(LLVMCheckLinkerFlag) |
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| 17 | set(LLVM_LIBCXX_USED 0) |
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| 18 | if(LLVM_ENABLE_LIBCXX) |
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| 19 | if(LLVM_COMPILER_IS_GCC_COMPATIBLE) |
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| 20 | check_cxx_compiler_flag("-stdlib=libc++" CXX_COMPILER_SUPPORTS_STDLIB) |
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| 21 | llvm_check_linker_flag(CXX "-stdlib=libc++" CXX_LINKER_SUPPORTS_STDLIB) |
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| 22 | if(CXX_COMPILER_SUPPORTS_STDLIB AND CXX_LINKER_SUPPORTS_STDLIB) |
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| 23 | append("-stdlib=libc++" |
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| 24 | CMAKE_CXX_FLAGS CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS |
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| 25 | CMAKE_MODULE_LINKER_FLAGS) |
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| 26 | set(LLVM_LIBCXX_USED 1) |
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| 27 | else() |
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| 28 | message(WARNING "Can't specify libc++ with '-stdlib='") |
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| 29 | endif() |
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| 30 | else() |
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| 31 | message(WARNING "Not sure how to specify libc++ for this compiler") |
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| 32 | endif() |
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| 33 | endif() |
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| 34 | |||
| 35 | if(LLVM_STATIC_LINK_CXX_STDLIB) |
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| 36 | if(LLVM_COMPILER_IS_GCC_COMPATIBLE) |
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| 37 | check_cxx_compiler_flag("-static-libstdc++" |
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| 38 | CXX_COMPILER_SUPPORTS_STATIC_STDLIB) |
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| 39 | llvm_check_linker_flag(CXX "-static-libstdc++" CXX_LINKER_SUPPORTS_STATIC_STDLIB) |
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| 40 | if(CXX_COMPILER_SUPPORTS_STATIC_STDLIB AND |
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| 41 | CXX_LINKER_SUPPORTS_STATIC_STDLIB) |
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| 42 | append("-static-libstdc++" |
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| 43 | CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS |
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| 44 | CMAKE_MODULE_LINKER_FLAGS) |
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| 45 | else() |
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| 46 | message(WARNING |
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| 47 | "Can't specify static linking for the C++ standard library") |
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| 48 | endif() |
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| 49 | else() |
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| 50 | message(WARNING "Not sure how to specify static linking of C++ standard " |
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| 51 | "library for this compiler") |
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| 52 | endif() |
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| 53 | endif() |
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| 54 | endif() |