Well, the Wine one can be resolved by attempting to link with libwine.so if that succeeds, then wine is installed (in the search path anyway). An additional search for the .so file might be prudent. But then again, as I said before, I'm far from experienced with configure. I have no experience with mingw32 however. Does mingw32 supply versions of most windows libraries? Perhaps changing configure to watch for a different windows library (instead of libgdi32) would resolve the issue with it? Or is there some way to detect it? As Stephen put it (but substitute mingw32 for Wine): Stephen J. Turnbull wrote: Is there an easy way to detect Wine? Ie, a unique library or header file, or some uniquely strange behavior in a more "generic" context (preferably identifiable in two or three lines of shell script or C code)? Tyler Colbert Senior Software Engineer Saffire Corporation -- beginning to hate sedit for email.