Where are the xml parser functions?

["D'Arcy J.M. Cain" <darcy%NetBSD.org@localhost>]

/usr/obj/net/freeswitch-core/work.x86_64/freeswitch-1.2.3/libs/apr-util/.libs/libaprutil-1.so:
undefined reference to
`XML_ParserCreate' 
/usr/obj/net/freeswitch-core/work.x86_64/freeswitch-1.2.3/libs/apr-util/.libs/libaprutil-1.so:
undefined reference to
`XML_GetErrorCode' 
/usr/obj/net/freeswitch-core/work.x86_64/freeswitch-1.2.3/libs/apr-util/.libs/libaprutil-1.so:
undefined reference to
`XML_SetUserData' 
/usr/obj/net/freeswitch-core/work.x86_64/freeswitch-1.2.3/libs/apr-util/.libs/libaprutil-1.so:
undefined reference to
`XML_ErrorString' 
/usr/obj/net/freeswitch-core/work.x86_64/freeswitch-1.2.3/libs/apr-util/.libs/libaprutil-1.so:
undefined reference to
`XML_ParserFree' 
/usr/obj/net/freeswitch-core/work.x86_64/freeswitch-1.2.3/libs/apr-util/.libs/libaprutil-1.so:
undefined reference to
`XML_SetElementHandler' 
/usr/obj/net/freeswitch-core/work.x86_64/freeswitch-1.2.3/libs/apr-util/.libs/libaprutil-1.so:
undefined reference to
`XML_Parse' 
/usr/obj/net/freeswitch-core/work.x86_64/freeswitch-1.2.3/libs/apr-util/.libs/libaprutil-1.so:
undefined reference to `XML_SetCharacterDataHandler' gmake[1]: ***
[freeswitch] Error 1 gmake: *** [all] Error 2 *** Error code 2

I tried adding this to the Makefile but no joy:

.include "../../textproc/expat/buildlink3.mk"
.include "../../www/libwww/buildlink3.mk"

-- 
D'Arcy J.M. Cain <darcy%NetBSD.org@localhost>
http://www.NetBSD.org/ IM:darcy%Vex.Net@localhost