Hi- I've been trying to compile the Perl OpenGL module for cygwin using the w32api opengl32, glu32,.. for performance. I used to be able to add either -I/usr/X11R6/include or -I/usr/include/w32api to the gcc flags to get the compile to work.
Going back with cygwin 1.7.1 now, I am unable to get the w32api compile to work. After some debugging, the problem is that /usr/include/w32api is in the gcc system headers list. As a result, duplicate -Idir flags are discarded and since both /usr/include and /usr/include/w32api are in the system search path (in that order), the compile *always* picks up the gl.h in /usr/include/GL which is the Mesa one. I was able to get the compile to work by using the -isystem flag instead of -I as the gcc option but now I have a compiler-specific flag that I have to track. Are there any other options here? Thanks much, Chris P.S. It turns out the previous use of flags had the same problem but since the X11/Mesa GL include files were in /usr/X11R6/include and not /usr/include, the duplicate use of -I/usr/include/w32api was ignored but that was the one being pulled in by the default search. Then when I put -I/usr/X11R6/include on the compile, it did get added to the header search path since it was not in the gcc system paths by default. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
