I've been trying to update gtk2 on NetBSD 2.0.2 (macppc) and pkgsrc has been
having trouble building MesaLib.  Is there anything I should check before
sending a PR?


This is an excerpt of where the errors begin:

mkdir drivers/x11/.libs
 cc -c -I../../include -I../../src/mesa -I../../src/mesa/main
-I../../src/mesa/glapi -I../../src/mesa/math -I../../src/mesa/tnl
-I../../src/mesa/shader -I../../src/mesa/swrast
-I../../src/mesa/swrast_setup -O2 -I/usr/pkg/include -I/usr/include
-DUSE_XSHM -DPTHREADS drivers/x11/glxapi.c  -fPIC -DPIC -o
drivers/x11/.libs/glxapi.o
In file included from drivers/x11/glxapi.h:32, 
           	 from drivers/x11/glxapi.c:38:
../../include/GL/glx.h:38:22: X11/Xlib.h: No such file or directory
../../include/GL/glx.h:39:23: X11/Xutil.h: No such file or directory
In file included from drivers/x11/glxapi.h:32, 
		 from drivers/x11/glxapi.c:38: 
../../include/GL/glx.h:179: error: parse error before "GLXPixmap" 
../../include/GL/glx.h:179: warning: data definition has no type or storage class 
../../include/GL/glx.h:180: error: parse error before "GLXDrawable" 
../../include/GL/glx.h:180: warning: data definition has no type or storage class 
../../include/GL/glx.h:183: error: parse error before "GLXFBConfigID" 
../../include/GL/glx.h:183: warning: data definition has no type or storage class

[...etc.]