endif ()
endif ()
-option(LLVM_FORCE_USE_OLD_TOOLCHAIN
- "Set to ON if you want to force CMake to use a toolchain older than those supported by LLVM."
- OFF)
-if(NOT LLVM_FORCE_USE_OLD_TOOLCHAIN)
- if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
- if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.7)
- message(FATAL_ERROR "Host GCC version must be at least 4.7!")
- endif()
- elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
- if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.1)
- message(FATAL_ERROR "Host Clang version must be at least 3.1!")
- endif()
- elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
- if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 17.0)
- message(FATAL_ERROR "Host Visual Studio must be at least 2012 (MSVC 17.0)")
- endif()
- endif()
-endif()
-
include(CheckCXXCompilerFlag)
check_cxx_compiler_flag("-Wno-variadic-macros" SUPPORTS_NO_VARIADIC_MACROS_FLAG)