sitecopy build できず。

はてー。どうすべか。

/usr/libexec/elf/ld: warning: libexpat.so.4, needed by /usr/local/lib/libneon.so, \
not found (try using -rpath or -rpath-link)
/usr/local/lib/libneon.so: undefined reference to `XML_SetElementHandler'
/usr/local/lib/libneon.so: undefined reference to `XML_Parse'
/usr/local/lib/libneon.so: undefined reference to `XML_ParserFree'
/usr/local/lib/libneon.so: undefined reference to `XML_SetCharacterDataHandler'
/usr/local/lib/libneon.so: undefined reference to `XML_ErrorString'
/usr/local/lib/libneon.so: undefined reference to `XML_ParserCreate'
/usr/local/lib/libneon.so: undefined reference to `XML_SetUserData'
/usr/local/lib/libneon.so: undefined reference to `XML_GetErrorCode'
/usr/local/lib/libneon.so: undefined reference to `XML_GetCurrentLineNumber'
/usr/local/lib/libneon.so: undefined reference to `XML_SetXmlDeclHandler'
gmake: *** [sitecopy] エラー 1
*** Error code 2

Stop in /usr/ports/www/sitecopy.
** Command failed [exit code 1]: /usr/bin/script -qa /tmp/portinstall35953.0 make
** Fix the problem and try again.
** Listing the failed packages (*:skipped / !:failed)
        ! www/sitecopy  (linker error)
--->  Packages processed: 0 done, 0 ignored, 0 skipped and 1 failed

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