im trying to compile winex from cvs with gl support. now the configure program looks for glext.h, glx.h and gl.h.

I think it is searching for these in /usr/X11R6/include/GL/, but mine are installed in /usr/include/GL/, so i symlinked over to the other dir. it still isnt working and is says

GL/glext.h...............no.

im starting to think it might be a path thing? how do i set my path and add /usr/X11R6/include/GL/, or alternatively, how do i tell ./configure where to look for my opengl header stuff?

Do you have a nvidia card/drivers? If so then they have their own openGL .h files. From the nvidia readme,
Q: Where can I get gl.h or glx.h so I can compile OpenGL programs?

A: Most systems come with these headers preinstalled. However, NVIDIA
has provided our own gl.h and glx.h file in case your system did not
come with them or in case you want to develop OpenGL apps that use
the new NVIDIA OpenGL extensions. These files have been installed in
/usr/share/doc/NVIDIA_GLX-1.0/usr/include/GL to avoid conflicting
with the system installed versions. To use these headers copy them
into /usr/include/GL.