Bundled libxml failing to compile

I hope this is the right list - it's kinda a tech-support question, but it's a development build and I think it's definitely a bug. Feel free to flame away if I'm not in the right place. For the past few days, I have been unable to compile the php5 snapshots due to the bundled libxml failing to compile. Here's the errors I get: gcc -Ibundle/libxml/ -I/home/csnyder/php/php5-200305101530/bundle/libxml/ -DPHP_ATOM_INC -I/home/csnyder/php/php5-200305101530/include -I/home/csnyder/php/php5-200305101530/main -I/home/csnyder/php/php5-200305101530 -I/home/csnyder/php/php5-200305101530/Zend -I/usr/include/libxml2 -I/home/csnyder/php/php5-200305101530/bundle/expat -I/home/csnyder/php/php5-200305101530/bundle/libxml/include -I/home/csnyder/php/php5-200305101530/bundle/libxml -I/home/csnyder/php/php5-200305101530/TSRM -g -O2 -c /home/csnyder/php/php5-200305101530/bundle/libxml/xmlreader.c -o bundle/libxml/xmlreader.o && echo > bundle/libxml/xmlreader.lo /home/csnyder/php/php5-200305101530/bundle/libxml/xmlreader.c:380: conflicting types for `xmlNewTextReader' /usr/include/libxml2/libxml/xmlreader.h:40: previous declaration of `xmlNewTextReader' make: *** [bundle/libxml/xmlreader.lo] Error 1 It appears to me that my installed version of libxml is conflicting with the bundled version. What can I do about this? Thanks in advance, and again I'm sorry if I'm on the wrong list.