[~/xmame-0.106]$ make
[OSDEPEND] Compiling src/unix/video-drivers/gltool.c ...
/bin/sh: --cflags: command not found
In file included from /usr/X11R6/include/GL/gl.h:1630,
                 from src/unix/video-drivers/gltool.h:71,
                 from src/unix/video-drivers/gltool.c:21:
/usr/X11R6/include/GL/glext.h:6952: error: redefinition of typedef 'PFNGLGETUNIFORMUIVEXTPROC'
/usr/X11R6/include/GL/glext.h:6941: error: previous declaration of 'PFNGLGETUNIFORMUIVEXTPROC' was here
In file included from src/unix/video-drivers/gltool.c:459:
src/unix/video-drivers/gl-disp-fetch.hc: In function `fetch_GL_FUNCS':
src/unix/video-drivers/gl-disp-fetch.hc:8: error: `SYMBOL_PREFIX' undeclared (first use in this function)
src/unix/video-drivers/gl-disp-fetch.hc:8: error: (Each undeclared identifier is reported only once
src/unix/video-drivers/gl-disp-fetch.hc:8: error: for each function it appears in.)
src/unix/video-drivers/gl-disp-fetch.hc:8: error: syntax error before string constant
...
make: *** [xmame.obj/unix.x11/video-drivers/gltool.o] Error 1