Add a check that the host compiler is modern to CMake, take 1. This is

likely to be reverted and re-applied a few times. The minimum versions
we're aiming at:

  GCC 4.7
  Clang 3.1
  MSVC 17.0 (Visual Studio 2012)

Let me know if something breaks!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199145 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth 2014-01-13 21:47:35 +00:00
parent 298d1a6b21
commit bf2609e264

View File

@ -316,6 +316,25 @@ if (LIBXML2_FOUND)
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)