Hi,
if you get the error "multiple target patterns" (when making the documentation in core), it is because "make" gets confused when a file name contains colons.
1) please get yast2-devtools-2.17.0+: Mon Jun 9 11:29:04 CEST 2008 - mvidner@suse.cz - ydoc.xsl: don't break on builtins in namespaces. 2) rm html/*::* 3) if (2) does not help, then make clean, or otherwise make sure that the "id" attribute in the *.xml docs does not contain colons.
Sorry for the trouble.