| # This CMake module is responsible for setting the standard library to libc++ | |
| # if the user has requested it. | |
| include(DetermineGCCCompatible) | |
| if(NOT DEFINED LLVM_STDLIB_HANDLED) | |
| set(LLVM_STDLIB_HANDLED ON) | |
| function(append value) | |
| foreach(variable ${ARGN}) | |
| set(${variable} "${${variable}} ${value}" PARENT_SCOPE) | |
| endforeach(variable) | |
| endfunction() | |
| include(CheckCXXCompilerFlag) | |
| include(CheckLinkerFlag) | |
| if(LLVM_ENABLE_LIBCXX) | |
| if(LLVM_COMPILER_IS_GCC_COMPATIBLE) | |
| check_cxx_compiler_flag("-stdlib=libc++" CXX_COMPILER_SUPPORTS_STDLIB) | |
| check_linker_flag("-stdlib=libc++" CXX_LINKER_SUPPORTS_STDLIB) | |
| if(CXX_COMPILER_SUPPORTS_STDLIB AND CXX_LINKER_SUPPORTS_STDLIB) | |
| append("-stdlib=libc++" | |
| CMAKE_CXX_FLAGS CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS | |
| CMAKE_MODULE_LINKER_FLAGS) | |
| else() | |
| message(WARNING "Can't specify libc++ with '-stdlib='") | |
| endif() | |
| else() | |
| message(WARNING "Not sure how to specify libc++ for this compiler") | |
| endif() | |
| endif() | |
| endif() |