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include(Compiler/GNU)
__compiler_gnu(C)
if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.5)
set(CMAKE_C90_STANDARD_COMPILE_OPTION "-std=c90")
set(CMAKE_C90_EXTENSION_COMPILE_OPTION "-std=gnu90")
elseif (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.4)
set(CMAKE_C90_STANDARD_COMPILE_OPTION "-std=c89")
set(CMAKE_C90_EXTENSION_COMPILE_OPTION "-std=gnu89")
endif()
if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.4)
set(CMAKE_C99_STANDARD_COMPILE_OPTION "-std=c99")
set(CMAKE_C99_EXTENSION_COMPILE_OPTION "-std=gnu99")
endif()
if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.7)
set(CMAKE_C11_STANDARD_COMPILE_OPTION "-std=c11")
set(CMAKE_C11_EXTENSION_COMPILE_OPTION "-std=gnu11")
elseif (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.6)
set(CMAKE_C11_STANDARD_COMPILE_OPTION "-std=c1x")
set(CMAKE_C11_EXTENSION_COMPILE_OPTION "-std=gnu1x")
endif()
if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.4)
if (NOT CMAKE_C_COMPILER_FORCED)
if (NOT CMAKE_C_STANDARD_COMPUTED_DEFAULT)
message(FATAL_ERROR "CMAKE_C_STANDARD_COMPUTED_DEFAULT should be set for ${CMAKE_C_COMPILER_ID} (${CMAKE_C_COMPILER}) version ${CMAKE_C_COMPILER_VERSION}")
endif()
set(CMAKE_C_STANDARD_DEFAULT ${CMAKE_C_STANDARD_COMPUTED_DEFAULT})
elseif(NOT DEFINED CMAKE_C_STANDARD_DEFAULT)
# Compiler id was forced so just guess the default standard level.
if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 5.0)
set(CMAKE_C_STANDARD_DEFAULT 11)
else()
set(CMAKE_C_STANDARD_DEFAULT 90)
endif()
endif()
endif()
macro(cmake_record_c_compile_features)
set(_result 0)
if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.6)
_record_compiler_features_c(11)
endif()
if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.4)
if (_result EQUAL 0)
_record_compiler_features_c(99)
endif()
if (_result EQUAL 0)
_record_compiler_features_c(90)
endif()
endif()
endmacro()
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