Help upgrade print/foomatic-filters to latest version

[Mayuresh <mayuresh%acm.org@localhost>]

I am trying out upgrading foomatic-filters to latest 4.0.12 from current
3.0.2.

I get the following error when trying to build. 


checking for DBUS... configure: error: in
`/usr/pkgsrc/print/foomatic-filters/work/foomatic-filters-4.0.12':
configure: error: The pkg-config script could not be found or is too old.
Make sure it
is in your PATH or set the PKG_CONFIG environment variable to the full
path to pkg-config.


I have just upgraded pkg-config to 0.27.1, though I still get the error.

How to deal with this?

Mayuresh