Grah, I re-installed MinGW to try to see if I could compile and managed to break the links to SDL libraries. This means I can't compile CLIVAN any longer (unless it rains really hard for the next few Sunday afternoons).
Finally got CLIVAN to compile again. Had to revert to an older version of MinGW (dunno if this helped), copy relevant SDL files into the MinGW distribution and in the windows environment variables you must delete GCC_EXEC_PREFIX. What a terrible frustration this was.
