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MSVC: Enable C23 language support

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Introduced support via `-std:clatest` in cl 19.39.
This commit is contained in:
Michael Hirsch
2025-07-15 15:56:00 -04:00
committed by Brad King
parent 58fc19e5c4
commit 0d758be222
2 changed files with 11 additions and 1 deletions
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2
.gitlab/ci/configure_windows_vs2022_x64_ninja.cmake
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@@ -1,4 +1,4 @@
set(CMake_TEST_C_STANDARDS "90;99;11;17" CACHE STRING "")
set(CMake_TEST_C_STANDARDS "90;99;11;17;23" CACHE STRING "")
set(CMake_TEST_CXX_STANDARDS "98;11;14;17;20;23" CACHE STRING "")
if (NOT "$ENV{CMAKE_CI_NIGHTLY}" STREQUAL "")

10
Modules/Compiler/MSVC-C.cmake
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@@ -33,6 +33,16 @@ if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 19.27)
endmacro()
endif()
if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 19.39)
# VS 17.10 did not have a "stdclatest" value for LanguageStandard_C.
if(NOT CMAKE_GENERATOR MATCHES "Visual Studio"
OR CMAKE_VS_VERSION_BUILD_NUMBER VERSION_GREATER_EQUAL 17.11)
set(CMAKE_C23_STANDARD_COMPILE_OPTION "-std:clatest")
set(CMAKE_C23_EXTENSION_COMPILE_OPTION "-std:clatest")
set(CMAKE_C_STANDARD_LATEST 23)
endif()
endif()
__compiler_check_default_language_standard(C 19.27 99)
else()
# MSVC has no specific options to set C language standards, but set them as