errors installing gv

[Jonathan Stickel]

I get the following errors when trying to install gv:

# port -v install gv
...
Button.c:38:28: error: X11/Xaw3d/XawInit.h: No such file or directory
In file included from ButtonP.h:32,
                  from Button.c:39:
Button.h:32:28: error: X11/Xaw3d/Command.h: No such file or directory
In file included from Button.c:39:
ButtonP.h:33:29: error: X11/Xaw3d/CommandP.h: No such file or directory
In file included from Button.c:39:
...

I know that I have Xaw3d installed and those files are correctly located 
in /opt/local/X11/Xaw3d.  It looks like /opt/local/include is not in the 
include path when building gv.  Is there something wrong with the port?

Jonathan