thodg/libgit2/cmake/AddCFlagIfSupported.cmake

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• Hash : c3fec456
  Author :
  Date : 2021-11-11T22:37:36
  

  cmake: reformat modules Apply the standard project cmake formatting to the modules.

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• cmake/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 _FLAG)
  	string(TOUPPER ${_FLAG} UPCASE)
  	string(REGEX REPLACE "[-=]" "_" UPCASE_PRETTY ${UPCASE})
  	string(REGEX REPLACE "^_+" "" UPCASE_PRETTY ${UPCASE_PRETTY})
  	check_c_compiler_flag(${_FLAG} IS_${UPCASE_PRETTY}_SUPPORTED)
  
  	if(IS_${UPCASE_PRETTY}_SUPPORTED)
  		set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_FLAG}")
  	else()
  		message(FATAL_ERROR "Required flag ${_FLAG} is not supported")
  	endif()
  endmacro()
  
  macro(ADD_C_FLAG_IF_SUPPORTED _FLAG)
  	string(TOUPPER ${_FLAG} UPCASE)
  	string(REGEX REPLACE "[-=]" "_" UPCASE_PRETTY ${UPCASE})
  	string(REGEX REPLACE "^_+" "" UPCASE_PRETTY ${UPCASE_PRETTY})
  	check_c_compiler_flag(${_FLAG} IS_${UPCASE_PRETTY}_SUPPORTED)
  
  	if(IS_${UPCASE_PRETTY}_SUPPORTED)
  		set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_FLAG}")
  	endif()
  endmacro()
  

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