[cmake-developers] [PATCH] Let CMake know that clang uses the GCC toolchain.

[Brad King]

On 07/29/2016 05:44 PM, Chaoren Lin via cmake-developers wrote:
> Clang on Windows uses the GCC toolchain, so we need to avoid using
> backslashes for paths in response files.
[snip]
>        strcmp(mf->GetSafeDefinition("CMAKE_C_COMPILER_ID"), "GNU") == 0 ||
>        strcmp(mf->GetSafeDefinition("CMAKE_CXX_COMPILER_ID"), "GNU") == 0 ||
>        strcmp(mf->GetSafeDefinition("CMAKE_C_SIMULATE_ID"), "GNU") == 0 ||
> -      strcmp(mf->GetSafeDefinition("CMAKE_CXX_SIMULATE_ID"), "GNU") == 0) {

Clang on Windows also comes in a cl-like variant whose response files may
need backslashes.  In the gcc-like variant the CMAKE_{C,CXX}_SIMULATE_ID
should be detected as GNU and cause the existing code to work.  What goes
wrong in your use case?

Thanks,
-Brad