usFunctionGetGccVersion.cmake

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#! \brief Get the gcc version
function(usFunctionGetGccVersion path_to_gcc output_var)
  if(CMAKE_COMPILER_IS_GNUCXX)
    execute_process(
      COMMAND ${path_to_gcc} -dumpversion
      RESULT_VARIABLE result
      OUTPUT_VARIABLE output
      ERROR_VARIABLE error
      OUTPUT_STRIP_TRAILING_WHITESPACE
      ERROR_STRIP_TRAILING_WHITESPACE
      )
    if(result)
      message(FATAL_ERROR "Failed to obtain compiler version running [${path_to_gcc} -dumpversion]: ${error}")
    endif()
    set(${output_var} ${output} PARENT_SCOPE)
  endif()
endfunction()