Updating old gnome-config call

[RNG <rgasch gmail com>]

Hi,

in the configure.in file for an old application I am trying to update,
there is the following call:

    GNOME_DATADIR="`gnome-config --datadir`"
    AC_SUBST(GNOME_DATADIR)

It seems that gnome-config is no longer supported and that the new
call the get such configuration information is pkg-config. However
pgk-config does not seem to be able to supply info equivalent to the
old gonme-config --datadir option. How is this best handled on a
current gnome configuration?

Greetings/Thanks
Robert