| # - Test CXX compiler for a flag |
| # Check if the CXX compiler accepts a flag |
| # |
| # Macro CHECK_CXX_ACCEPTS_FLAG(FLAGS VARIABLE) - |
| # checks if the function exists |
| # FLAGS - the flags to try |
| # VARIABLE - variable to store the result |
| # |
| |
| MACRO(CHECK_CXX_ACCEPTS_FLAG FLAGS VARIABLE) |
| IF(NOT DEFINED ${VARIABLE}) |
| MESSAGE(STATUS "Checking to see if CXX compiler accepts flag ${FLAGS}") |
| TRY_COMPILE(${VARIABLE} |
| ${CMAKE_BINARY_DIR} |
| ${CMAKE_ROOT}/Modules/DummyCXXFile.cxx |
| CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${FLAGS} |
| OUTPUT_VARIABLE OUTPUT) |
| IF(${VARIABLE}) |
| MESSAGE(STATUS "Checking to see if CXX compiler accepts flag ${FLAGS} - yes") |
| FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log |
| "Determining if the CXX compiler accepts the flag ${FLAGS} passed with " |
| "the following output:\n${OUTPUT}\n\n") |
| ELSE(${VARIABLE}) |
| MESSAGE(STATUS "Checking to see if CXX compiler accepts flag ${FLAGS} - no") |
| FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log |
| "Determining if the CXX compiler accepts the flag ${FLAGS} failed with " |
| "the following output:\n${OUTPUT}\n\n") |
| ENDIF(${VARIABLE}) |
| ENDIF(NOT DEFINED ${VARIABLE}) |
| ENDMACRO(CHECK_CXX_ACCEPTS_FLAG) |
