When I removed the -I /usr/include it seemed to compile fine (the test1.C is just a skeleton so I'll have to test more later). Thanks for the help, Shawn Lindberg -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/