The item is on the system at /usr/local/include/vorbis/vorbisfile.h
$ pkg info |grep Ogg
gstreamer-plugins-ogg-0.10.36,3 Gstreamer Ogg bitstream plugin
libkate-0.4.1_2 Codec for karaoke and text encapsulation for Ogg
libogg-1.3.0,4 Ogg bitstream library
liboggz-1.1.1_2 Simple Ogg API
libtheora-1.1.1_3 Theora video codec for the Ogg multimedia streaming system
p5-Ogg-Vorbis-Header-0.03_4 Manipulate / fetch info from Ogg-Vorbis audio files
p5-Ogg-Vorbis-Header-PurePerl-1.0_3 Manipulate / fetch info from Ogg-Vorbis audio files
taglib-1.8 Library for manipulating ID3 tags and Ogg comments
vorbis-tools-1.4.0_4,3 Play, encode, and manage Ogg Vorbis files
$
$ locate vorbisfile.h|grep /usr/local
/usr/local/include/taglib/vorbisfile.hpack
/usr/local/include/vorbis/vorbisfile.h
$
"wavpack/wavpack.h" has to be changed to "/usr/local/include/wavpack/wavpack.h"
Ogg and vorbis are separate on FreeBSD.