-`lucid' are synonyms for `athena'). On some systems, it does not work
-to use a toolkit with shared libraries. A free implementation of
-Motif, called LessTif, is available from <http://www.lesstif.org>.
-Compiling with LessTif or Motif causes a standard File Selection
-Dialog to pop up when you invoke file commands with the mouse. You
-can get fancy 3D-style scroll bars, even without Gtk or LessTif/Motif,
-if you have the Xaw3d library installed (see "Image support libraries"
-above for Xaw3d availability).
-
-You can tell configure where to search for GTK by specifying
-`--with-pkg-config-prog=PATH' where PATH is the pathname to
-pkg-config. Note that GTK version 2.6 or newer is required for Emacs.
+`lucid' are synonyms for `athena'). Compiling with Motif causes a
+standard File Selection Dialog to pop up when you invoke file commands
+with the mouse. You can get fancy 3D-style scroll bars, even without
+Gtk or Motif, if you have the Xaw3d library installed (see
+"Image support libraries" above for Xaw3d availability).
+
+You can tell configure where to search for GTK by giving it the
+argument PKG_CONFIG='/full/name/of/pkg-config'. GTK version 2.6 or
+newer is required for Emacs.