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  • Brad King's avatar
    Teach compiler ABI check to tolerate try_compile COPY_FILE failure · 4dc40185
    Brad King authored
    In CMakeDetermineCompilerABI we use try_compile with the COPY_FILE
    option to get a copy of the compiled binary used to detect the ABI
    information.  We already tolerate the case when compilation fails.
    However, when compilation appears to succeed but does not produce the
    expected executable the try_compile command immediately reports an error
    because the COPY_FILE fails.
    
    Tolerate COPY_FILE failure without stopping the overall configuration
    process by using the try_compile COPY_FILE_ERROR option to capture the
    error message.  Log the full error to CMakeError.log and simply report
    failure to detect the ABI as if compilation had failed.
    
    Teach the RunCMake.Configure test to cover this case and verify that the
    messages show up as expected both in stdout and in CMakeError.log.
    4dc40185