Need to add dev-perl/XML-Parser 2.34-r1 to the RDEPEND for this ebuild perhaps?
Since this bug cropped up on every workstation I got started upgrading to the latest kde, I'm posting it if nothing else for others who get confused. The easy fix is to just merge XML-Parser first.
[snip of configure failure]
checking for XML::Parser... configure: error: XML::Parser perl module is required for intltool
!!! Please attach the following file when filing a report to bugs.gentoo.org:
!!! ERROR: x11-misc/shared-mime-info-0.21-r1 failed.
ebuild.sh, line 1632: Called dyn_compile
ebuild.sh, line 983: Called qa_call 'src_compile'
ebuild.sh, line 44: Called src_compile
shared-mime-info-0.21-r1.ebuild, line 31: Called econf '--disable-update-mimedb'
ebuild.sh, line 586: Called die
It looks likely that this bug is due to my needing to recompile everything linking against expat on my system- revdep-rebuild to the rescue.
*** This bug has been marked as a duplicate of bug 41124 ***