x11/XFree86-4-clients and x11-toolkits/pango fails

[Nakata Maho]

Hi All,
recently, I installed 5-CURRENT from ISO image.
I tried clean build from scratch, first, XFree86-4-clinent failed.
and x11-toolkits/pango fails.

apprarently we should link expat. something wrong with pkg-config? 
---
/usr/X11R6/lib/libfontconfig.so: undefined reference to `XML_SetElementHandler'
/usr/X11R6/lib/libfontconfig.so: undefined reference to `XML_SetDoctypeDeclHandler'
/usr/X11R6/lib/libfontconfig.so: undefined reference to `XML_ParserFree'
/usr/X11R6/lib/libfontconfig.so: undefined reference to `XML_SetCharacterDataHandler'
/usr/X11R6/lib/libfontconfig.so: undefined reference to `XML_ErrorString'
/usr/X11R6/lib/libfontconfig.so: undefined reference to `XML_ParseBuffer'
/usr/X11R6/lib/libfontconfig.so: undefined reference to `XML_ParserCreate'
/usr/X11R6/lib/libfontconfig.so: undefined reference to `XML_SetUserData'
/usr/X11R6/lib/libfontconfig.so: undefined reference to `XML_GetErrorCode'
/usr/X11R6/lib/libfontconfig.so: undefined reference to `XML_GetBuffer'
/usr/X11R6/lib/libfontconfig.so: undefined reference to `XML_GetCurrentLineNumber'
gmake[3]: *** [ottest] Error 1
gmake[3]: Leaving directory `/work/cvsup/ports/x11-toolkits/pango/work/pango-1.2.5/pango/opentype'
gmake[2]: *** [all-recursive] Error 1
gmake[2]: Leaving directory `/work/cvsup/ports/x11-toolkits/pango/work/pango-1.2.5/pango'
gmake[1]: *** [all-recursive] Error 1
gmake[1]: Leaving directory `/work/cvsup/ports/x11-toolkits/pango/work/pango-1.2.5'
gmake: *** [all-recursive-am] Error 2
*** Error code 2

Stop in /work/cvsup/ports/x11-toolkits/pango.
--maho