[webkit-help] What am I missing to build webkit gtk on mac?

[Eagle Offshore]

I tried building with --gtk and I get

WebKitTools/Scripts/build-webkit --gtk
Calling configure in /Users/todd/Projects/WebKit/WebKitBuild/Release

Warning: not running gtk-docize.
configure.ac:81: installing `autotools/compile'
configure.ac:41: installing `autotools/missing'
configure.ac:41: installing `autotools/install-sh'
automake: cannot open < gtk-doc.make: No such file or directory
Failed to setup build environment using 'autotools'!

What am I missing?