diff options
| -rw-r--r-- | Tests/RunCMake/CMakeLists.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Tests/RunCMake/CMakeLists.txt b/Tests/RunCMake/CMakeLists.txt index a1b9d5b..bbb1952 100644 --- a/Tests/RunCMake/CMakeLists.txt +++ b/Tests/RunCMake/CMakeLists.txt @@ -366,6 +366,15 @@ function(add_RunCMake_test_try_compile) unset(CMAKE_CXX_STANDARD_DEFAULT) endif() endif() + if(CMAKE_VERSION VERSION_LESS 3.18.20200813 AND "x${CMAKE_C_COMPILER_ID}" STREQUAL "xMSVC") + # Older CMake versions do not know about MSVC language standards. + # Approximate our logic from MSVC-C.cmake. + if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 19.27) + set(CMAKE_C_STANDARD_DEFAULT 99) + else() + set(CMAKE_C_STANDARD_DEFAULT "") + endif() + endif() foreach(var CMAKE_SYSTEM_NAME CMAKE_C_COMPILER_ID |