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  • Alexander Neundorf's avatar
    · eddf1cf3
    Alexander Neundorf authored
    ENH: improve TRY_RUN() for crosscompiling: instead of just failing, it now
    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
    eddf1cf3