CVS 99JN21 during ./ configure test for with-xml=/usr/local gives:
checking for Hyperwave support... no
checking for XML support... ./configure: test: argument expected
This with-xml=/usr/local was ok before the xml changes
to configure.in done 99JN20 -- now CVS 99JN21 is broken.
CVS 99JN17 , the lib was not found so added in the
-lexpat by hand in Makefile for linking.
With the cvs from 99JN17, I also had to edit into config.h
#define HAVE_LIBEXPAT 1  -- as ./configure did not find
xml along the way.
Also, seems odd that php3_xml.h has: #include <xml/xmltok.h>
#include <xml/xmlparse.h>
  whereas most php3 functions don't expect a subdirectory
of e.g. /usr/local/include as does the XML kit
so had to make xml sub-directory during install XML kit.