diff options
Diffstat (limited to 'Modules/CMakeDetermineCXXCompiler.cmake')
| -rw-r--r-- | Modules/CMakeDetermineCXXCompiler.cmake | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Modules/CMakeDetermineCXXCompiler.cmake b/Modules/CMakeDetermineCXXCompiler.cmake index 00ef5b9..7274eec 100644 --- a/Modules/CMakeDetermineCXXCompiler.cmake +++ b/Modules/CMakeDetermineCXXCompiler.cmake @@ -119,6 +119,22 @@ if(NOT CMAKE_CXX_COMPILER_ID_RUN) elseif(CMAKE_CXX_PLATFORM_ID MATCHES "Cygwin") set(CMAKE_COMPILER_IS_CYGWIN 1) endif() +else() + if(NOT DEFINED CMAKE_CXX_COMPILER_FRONTEND_VARIANT) + # Some toolchain files set our internal CMAKE_CXX_COMPILER_ID_RUN + # variable but are not aware of CMAKE_CXX_COMPILER_FRONTEND_VARIANT. + # They pre-date our support for the GNU-like variant targeting the + # MSVC ABI so we do not consider that here. + if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang") + if("x${CMAKE_CXX_SIMULATE_ID}" STREQUAL "xMSVC") + set(CMAKE_CXX_COMPILER_FRONTEND_VARIANT "MSVC") + else() + set(CMAKE_CXX_COMPILER_FRONTEND_VARIANT "GNU") + endif() + else() + set(CMAKE_CXX_COMPILER_FRONTEND_VARIANT "") + endif() + endif() endif() if (NOT _CMAKE_TOOLCHAIN_LOCATION) |