diff options
Diffstat (limited to 'cmake/modules/HandleLLVMStdlib.cmake')
| -rw-r--r-- | cmake/modules/HandleLLVMStdlib.cmake | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/cmake/modules/HandleLLVMStdlib.cmake b/cmake/modules/HandleLLVMStdlib.cmake new file mode 100644 index 0000000..47bb6cd --- /dev/null +++ b/cmake/modules/HandleLLVMStdlib.cmake @@ -0,0 +1,35 @@ +# This CMake module is responsible for setting the standard library to libc++ +# if the user has requested it. + +if(NOT DEFINED LLVM_STDLIB_HANDLED) + set(LLVM_STDLIB_HANDLED ON) + + if(CMAKE_COMPILER_IS_GNUCXX) + set(LLVM_COMPILER_IS_GCC_COMPATIBLE ON) + elseif( MSVC ) + set(LLVM_COMPILER_IS_GCC_COMPATIBLE OFF) + elseif( "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" ) + set(LLVM_COMPILER_IS_GCC_COMPATIBLE ON) + endif() + + function(append_if condition value) + if(${condition}) + foreach(variable ${ARGN}) + set(${variable} "${${variable}} ${value}" PARENT_SCOPE) + endforeach(variable) + endif() + endfunction() + + include(CheckCXXCompilerFlag) + if(LLVM_ENABLE_LIBCXX) + if(LLVM_COMPILER_IS_GCC_COMPATIBLE) + check_cxx_compiler_flag("-stdlib=libc++" CXX_SUPPORTS_STDLIB) + append_if(CXX_SUPPORTS_STDLIB "-stdlib=libc++" CMAKE_CXX_FLAGS) + append_if(CXX_SUPPORTS_STDLIB "-stdlib=libc++" CMAKE_EXE_LINKER_FLAGS) + append_if(CXX_SUPPORTS_STDLIB "-stdlib=libc++" CMAKE_SHARED_LINKER_FLAGS) + append_if(CXX_SUPPORTS_STDLIB "-stdlib=libc++" CMAKE_MODULE_LINKER_FLAGS) + else() + message(WARNING "Not sure how to specify libc++ for this compiler") + endif() + endif() +endif() |