Attempting to use an alternate installed gpc version or gpc compiled for a different machine does not work: $ gpc -V 4.1.2 a.pas gpc: `-V' must come at the start of the command line $ gpc -b m68k a.pas gpc: `-b' must come at the start of the command line Problem appears to be that "init_gpc_options" inserts "-famtmpfile" and perhaps "-fsyntax-only" in front of all user-specified options, but "process_command" requires that "-V" and "-b" appear first. Workaround is to call the desired compiler driver directly, e.g.: $ i686-pc-mingw32-gpc-4.1.2 a.pas ...although that is somewhat awkward. Also, if the above bug is fixed, it appears that "process_command" will invoke "<machine>-gcc-<version>" instead of "<machine>-gpc-<version>". -- Dave