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- # MSVC has no specific options to set C language standards, but set them as
- # empty strings anyways so the feature test infrastructure can at least check
- # to see if they are defined.
- set(CMAKE_C90_STANDARD_COMPILE_OPTION "")
- set(CMAKE_C90_EXTENSION_COMPILE_OPTION "")
- set(CMAKE_C99_STANDARD_COMPILE_OPTION "")
- set(CMAKE_C99_EXTENSION_COMPILE_OPTION "")
- set(CMAKE_C11_STANDARD_COMPILE_OPTION "")
- set(CMAKE_C11_EXTENSION_COMPILE_OPTION "")
- # There is no meaningful default for this
- set(CMAKE_C_STANDARD_DEFAULT "")
- # There are no C compiler modes so we hard-code the known compiler supported
- # features. 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_c_compile_features)
- list(APPEND CMAKE_C_COMPILE_FEATURES
- c_std_90
- c_std_99
- c_std_11
- c_function_prototypes
- )
- list(APPEND CMAKE_C90_COMPILE_FEATURES c_std_90 c_function_prototypes)
- list(APPEND CMAKE_C99_COMPILE_FEATURES c_std_99)
- list(APPEND CMAKE_C11_COMPILE_FEATURES c_std_11)
- if (CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 14.0)
- list(APPEND CMAKE_C_COMPILE_FEATURES c_variadic_macros)
- list(APPEND CMAKE_C99_COMPILE_FEATURES c_variadic_macros)
- endif()
- set(_result 0) # expected by cmake_determine_compile_features
- endmacro()
- # /JMC "Just My Code" is only supported by MSVC 19.05 onward.
- if (CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 19.05)
- set(CMAKE_C_COMPILE_OPTIONS_JMC "-JMC")
- endif()
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