thodg/libgit2/cmake/Modules/AddCFlagIfSupported.cmake

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• Hash : 5c8d5eac
  Author :
  Date : 2014-04-19T23:07:50
  

  Introduce AddCFlagIfSupported CMake macro

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• cmake/Modules/AddCFlagIfSupported.cmake

• # - Append compiler flag to CMAKE_C_FLAGS if compiler supports it
  # ADD_C_FLAG_IF_SUPPORTED(<flag>)
  #  <flag> - the compiler flag to test
  # This internally calls the CHECK_C_COMPILER_FLAG macro.
  
  INCLUDE(CheckCCompilerFlag)
  
  MACRO(ADD_C_FLAG_IF_SUPPORTED _FLAG)
  	STRING(TOUPPER ${_FLAG} UPCASE)
  	STRING(REGEX REPLACE "^-" "" UPCASE_PRETTY ${UPCASE}) 
  	CHECK_C_COMPILER_FLAG(${_FLAG} IS_${UPCASE_PRETTY}_SUPPORTED)
  
  	IF(IS_${UPCASE_PRETTY}_SUPPORTED)
  		SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_FLAG}")
  	ENDIF()
  ENDMACRO()
  

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