Mine

In file included from /usr/X11/include/GL/glx.h:336,
                 from gl_common.h:16,
                 from vo_gl.c:17:
/usr/X11/include/GL/glxext.h:267: error: redefinition of `GLXFBConfigSGIX'
/usr/X11/include/GL/glx.h:156: error: `GLXFBConfigSGIX' previously declared here
make[1]: *** [vo_gl.o] Error 1
make[1]: Leaving directory `/home/blackhat/MPlayer-1.0pre7/libvo'
make: *** [libvo/libvo.a] Error 2
bash-3.00# mplayer
bash: mplayer: command not found
bash-3.00#