eddf1cf39f
creates two cache variables, one for the RUN_RESULT, one for the RUN_OUTPUT (if required), which can be set or preset by the user. It has now also two new arguments: RUN_OUTPUT_VARIABLE and COMPILE_OUTPUT_VARIABLE (the old OUTPUT_VARIABLE merges both), so if only COMPILE_OUTPUT_VARIABLE is used the run time output of the TRY_RUN is unused and the user doesn't have to care about the output when crosscompiling. This is now used in FindThreads.cmake, CheckC/CXXSourceRuns.cmake and TestBigEndian.cmake, which used the output only for the logfile (compile output is still there). Test/TryCompile/ now also tests the behaviour of OUTPUT_VARIABLE, RUN_OUTPUT_VARIABLE and COMPILE_OUTPUT_VARIABLE. Alex
42 lines
1.9 KiB
CMake
42 lines
1.9 KiB
CMake
# - Define macro to determine endian type
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# Check if the system is big endian or little endian
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# TEST_BIG_ENDIAN(VARIABLE)
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# VARIABLE - variable to store the result to
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#
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MACRO(TEST_BIG_ENDIAN VARIABLE)
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SET(CMAKE_ALLOW_UNKNOWN_VARIABLE_READ_ACCESS 1)
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IF(NOT DEFINED ${VARIABLE})
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IF("HAVE_${VARIABLE}" MATCHES "^HAVE_${VARIABLE}$")
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TRY_RUN(${VARIABLE} HAVE_${VARIABLE}
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${CMAKE_BINARY_DIR}
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${CMAKE_ROOT}/Modules/TestBigEndian.c
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COMPILE_OUTPUT_VARIABLE OUTPUT)
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IF("${VARIABLE}" STREQUAL "FAILED_TO_RUN")
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MESSAGE(SEND_ERROR "TestBigEndian Failed to run with output: ${OUTPUT}")
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ENDIF("${VARIABLE}" STREQUAL "FAILED_TO_RUN")
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MESSAGE(STATUS "Check if the system is big endian")
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IF(HAVE_${VARIABLE})
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining the endianes of the system passed. The system is ")
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IF(${VARIABLE})
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"big endian")
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MESSAGE(STATUS "Check if the system is big endian - big endian")
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ELSE(${VARIABLE})
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"little endian")
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MESSAGE(STATUS "Check if the system is big endian - little endian")
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ENDIF(${VARIABLE})
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Test produced following output:\n${OUTPUT}\n\n")
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ELSE(HAVE_${VARIABLE})
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining the endianes of the system failed with the following output:\n${OUTPUT}\n\n")
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MESSAGE("Check if the system is big endian - failed")
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ENDIF(HAVE_${VARIABLE})
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ENDIF("HAVE_${VARIABLE}" MATCHES "^HAVE_${VARIABLE}$")
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ENDIF(NOT DEFINED ${VARIABLE})
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SET(CMAKE_ALLOW_UNKNOWN_VARIABLE_READ_ACCESS)
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ENDMACRO(TEST_BIG_ENDIAN)
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