I'm trying to compile 1.12.4 now. Last time I tried in April 2012 with 1.12.0, I (still) had to do this: http://cygwin.com/ml/cygwin-xfree/2011-10/msg00065.html This was for 1.11.1. Anyways, even with --disable-glx-tls, the build fails now. It complains about something similar, "__glapi_Dispatch". What should I do now? Thanks.