configure:19875: checking GL/glx.h usability
configure:19887: gcc -c -g -O2  conftest.c >&5
In file included from conftest.c:66:
/usr/include/GL/glx.h:45:19: error: GL/gl.h: No such file or directory
In file included from conftest.c:66:
/usr/include/GL/glx.h:295: error: syntax error before '*' token
In file included from /usr/include/GL/glx.h:300,
                 from conftest.c:66:
/usr/include/GL/glxext.h:413: error: syntax error before '*' token
/usr/include/GL/glxext.h:555: error: syntax error before 'GLenum'
In file included from conftest.c:66:
/usr/include/GL/glx.h:464: error: syntax error before 'size'
/usr/include/GL/glx.h:465: error: syntax error before '*' token
/usr/include/GL/glx.h:466: error: syntax error before 'size'
/usr/include/GL/glx.h:467: error: syntax error before '*' token
/usr/include/GL/glx.h:493: error: syntax error before 'glXGetMemoryOffsetMESA'
/usr/include/GL/glx.h:496: error: syntax error before '*' token
/usr/include/GL/glx.h:496: error: 'GLuint' declared as function returning a function
configure:19893: $? = 1
configure: failed program was:
| /* confdefs.h.  */