GTK+ 2.0 problems

[Ralph M. Los]

OK, trying to make install with /usr/ports/net/grdesktop, I get this:

checking for gtk+-2.0... Package gtk+-2.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `gtk+-2.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'gtk+-2.0' found
configure: error: cannot find GTK+ 2.0!
===>  Script "configure" failed unexpectedly.
Please report the problem to flz at xbsd.org [maintainer] and attach the
"/usr/ports/net/grdesktop/work/grdesktop-0.22/config.log" including the output
of the failure of your make command. Also, it might be a good idea to provide
an overview of all packages installed on your system (e.g. an `ls
/var/db/pkg`).
*** Error code 1


In fact, the file it's looking for exists here:

frog# locate gtk+-2.0.pc
/usr/X11R6/libdata/pkgconfig/gtk+-2.0.pc


So now what?  Plz help - thanks.

Ralph