Subject: X11/extensions/Xrandr.h: present but cannot be compiled

From: Dan Nicolaescu <[email-masked]>
Date: Fri, 12 Sep 2014 17:47:59 -0400

On this machine:

$ cat /etc/redhat-release 
Red Hat Enterprise Linux Client release 5.9 (Tikanga)

configure: WARNING: X11/extensions/Xrandr.h: present but cannot be compiled
configure: WARNING: X11/extensions/Xrandr.h:     check for missing prerequisite headers?
configure: WARNING: X11/extensions/Xrandr.h: see the Autoconf documentation
configure: WARNING: X11/extensions/Xrandr.h:     section "Present But Cannot Be Compiled"
configure: WARNING: X11/extensions/Xrandr.h: proceeding with the compiler's result
configure: WARNING:     ## ------------------------------------ ##
configure: WARNING:     ## Report this to [email-masked] ##
configure: WARNING:     ## ------------------------------------ ##

Not sure what this message is about, is it necessary to dig through to figure out why the autoconf test failed?