[llvm] r305123 - Enable c++1z experimental builds.

[Justin Bogner via llvm-commits]

Vassil Vassilev via llvm-commits <llvm-commits at lists.llvm.org> writes:
> Author: vvassilev
> Date: Fri Jun  9 17:09:57 2017
> New Revision: 305123
>
> URL: http://llvm.org/viewvc/llvm-project?rev=305123&view=rev
> Log:
> Enable c++1z experimental builds.
>
> Patch by David Abdurachmanov!
>
> Modified:
>     llvm/trunk/CMakeLists.txt
>     llvm/trunk/cmake/modules/HandleLLVMOptions.cmake
>
> Modified: llvm/trunk/CMakeLists.txt
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/CMakeLists.txt?rev=305123&r1=305122&r2=305123&view=diff
> ==============================================================================
>
> --- llvm/trunk/CMakeLists.txt (original)
> +++ llvm/trunk/CMakeLists.txt Fri Jun  9 17:09:57 2017
> @@ -385,6 +385,7 @@ else()
>    option(LLVM_ENABLE_LOCAL_SUBMODULE_VISIBILITY "Compile with -fmodules-local-submodule-visibility." ON)
>  endif()
>  option(LLVM_ENABLE_CXX1Y "Compile with C++1y enabled." OFF)
> +option(LLVM_ENABLE_CXX1Z "Compile with C++1z enabled." OFF)
>  option(LLVM_ENABLE_LIBCXX "Use libc++ if available." OFF)
>  option(LLVM_ENABLE_LLD "Use lld as C and C++ linker." OFF)
>  option(LLVM_ENABLE_PEDANTIC "Compile with pedantic enabled." ON)
>
> Modified: llvm/trunk/cmake/modules/HandleLLVMOptions.cmake
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/cmake/modules/HandleLLVMOptions.cmake?rev=305123&r1=305122&r2=305123&view=diff
> ==============================================================================
> --- llvm/trunk/cmake/modules/HandleLLVMOptions.cmake (original)
> +++ llvm/trunk/cmake/modules/HandleLLVMOptions.cmake Fri Jun  9 17:09:57 2017
> @@ -385,6 +385,9 @@ elseif( LLVM_COMPILER_IS_GCC_COMPATIBLE
>    if (LLVM_ENABLE_CXX1Y)
>      check_cxx_compiler_flag("-std=c++1y" CXX_SUPPORTS_CXX1Y)
>      append_if(CXX_SUPPORTS_CXX1Y "-std=c++1y" CMAKE_CXX_FLAGS)

Somewhat tangential, but should we switch this from 1y to 14 at this
point?

> +  elseif(LLVM_ENABLE_CXX1Z)
> +    check_cxx_compiler_flag("-std=c++1z" CXX_SUPPORTS_CXX1Z)
> +    append_if(CXX_SUPPORTS_CXX1Z "-std=c++1z" CMAKE_CXX_FLAGS)
>    else()
>      check_cxx_compiler_flag("-std=c++11" CXX_SUPPORTS_CXX11)
>      if (CXX_SUPPORTS_CXX11)
>
>
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