When built with --enable-local-transport the X server depends on sys/stropt.h, which doesn't exist in many Linux distributions (e.g. Fedora).
Created attachment 235469 [details] Patch
Comment on attachment 235469 [details] Patch Clearing flags on attachment: 235469 Committed r171555: <http://trac.webkit.org/changeset/171555>
All reviewed patches have been landed. Closing bug.