diff options
Diffstat (limited to 'Modules')
| -rw-r--r-- | Modules/Compiler/Clang-CXX.cmake | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/Modules/Compiler/Clang-CXX.cmake b/Modules/Compiler/Clang-CXX.cmake index 77866e9..c5dd081 100644 --- a/Modules/Compiler/Clang-CXX.cmake +++ b/Modules/Compiler/Clang-CXX.cmake @@ -51,8 +51,12 @@ if(NOT "x${CMAKE_CXX_SIMULATE_ID}" STREQUAL "xMSVC") endif() unset(_clang_version_std17) + + __compiler_check_default_language_standard(CXX 2.1 98) else() - # clang-cl does not know these options because it behaves like cl.exe + # This version of clang-cl, or the MSVC version it simulates, does not have + # language standards. Set these options as empty strings so the feature + # test infrastructure can at least check to see if they are defined. set(CMAKE_CXX98_STANDARD_COMPILE_OPTION "") set(CMAKE_CXX98_EXTENSION_COMPILE_OPTION "") set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "") @@ -63,10 +67,7 @@ else() set(CMAKE_CXX17_EXTENSION_COMPILE_OPTION "") set(CMAKE_CXX20_STANDARD_COMPILE_OPTION "") set(CMAKE_CXX20_EXTENSION_COMPILE_OPTION "") -endif() -if(NOT "x${CMAKE_CXX_SIMULATE_ID}" STREQUAL "xMSVC") - __compiler_check_default_language_standard(CXX 2.1 98) -else() + # There is no meaningful default for this set(CMAKE_CXX_STANDARD_DEFAULT "") endif() |