There are hard coded dependancies on XFree86-libs package, which
needs to be fixed before xorg-x11 can be enabled in the development
I haven't investigated this deeper yet, but will update the
report unless it's fixed before I get to looking deeper myself. ;o)
Applications that link to any X library, will have those dependancies
automatically picked up by rpm when it runs find-requires, and you
do not need to hard code a dependancy on the XFree86-libs package.
Fixed in xemacs-21.4.15-3 in rawhide.