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| author | Brad King <brad.king@kitware.com> | 2018-04-11 18:46:09 (GMT) |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2018-04-11 18:47:28 (GMT) |
| commit | 8381bc12add724f1f262601b155485164b1842b1 (patch) | |
| tree | 857baaad2d6e2f67aec391752dc675a08158a352 /Modules/Compiler/Clang-CXX.cmake | |
| parent | 6cddf7ba324a4cc5ce102e1c48d27ee7e9022b16 (diff) | |
| download | CMake-8381bc12add724f1f262601b155485164b1842b1.zip CMake-8381bc12add724f1f262601b155485164b1842b1.tar.gz CMake-8381bc12add724f1f262601b155485164b1842b1.tar.bz2 | |
Clang: Avoid extra C++ feature detection when simulating MSVC
Apply the optimization from commit v3.10.0-rc1~131^2 (MSVC: Avoid
unnecessary C++ feature detection steps, 2017-09-11) to the case of
Clang simulating a version of MSVC that does not define standards.
Issue: #17274
Diffstat (limited to 'Modules/Compiler/Clang-CXX.cmake')
| -rw-r--r-- | Modules/Compiler/Clang-CXX.cmake | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/Modules/Compiler/Clang-CXX.cmake b/Modules/Compiler/Clang-CXX.cmake index c5dd081..b24aaf4 100644 --- a/Modules/Compiler/Clang-CXX.cmake +++ b/Modules/Compiler/Clang-CXX.cmake @@ -70,4 +70,19 @@ else() # There is no meaningful default for this set(CMAKE_CXX_STANDARD_DEFAULT "") + + # There are no compiler modes so we only need to test features once. + # Override the default macro for this special case. Pretend that + # all language standards are available so that at least compilation + # can be attempted. + macro(cmake_record_cxx_compile_features) + list(APPEND CMAKE_CXX_COMPILE_FEATURES + cxx_std_98 + cxx_std_11 + cxx_std_14 + cxx_std_17 + cxx_std_20 + ) + _record_compiler_features(CXX "" CMAKE_CXX_COMPILE_FEATURES) + endmacro() endif() |