checking X11/Xosdefs.h usability... yes
checking X11/Xosdefs.h presence... yes
checking for X11/Xosdefs.h... yes
checking GL/gl.h usability... no
checking GL/gl.h presence... yes
configure: WARNING: GL/gl.h: present but cannot be compiled
configure: WARNING: GL/gl.h:     check for missing prerequisite headers?
configure: WARNING: GL/gl.h: see the Autoconf documentation
configure: WARNING: GL/gl.h:     section "Present But Cannot Be Compiled"
configure: WARNING: GL/gl.h: proceeding with the preprocessor's result
configure: WARNING: GL/gl.h: in the future, the compiler will take precedence
configure: WARNING:     ## -------------------------------- ##
configure: WARNING:     ## Report this to http://brlcad.org ##
configure: WARNING:     ## -------------------------------- ##
checking for GL/gl.h... yes
checking GL/glx.h usability... no
checking GL/glx.h presence... no
checking for GL/glx.h... no
checking emmintrin.h usability... yes