I'm attaching a patch to cleanup a bit the ebuild for gimp-print to use $(use_[with|enable]) instead of use checks and myconf, and one for the sources to allow building with --as-needed.
The removing of libtool.m4 is to avoid collisions between new libtools and the one shipped with the package. The patch for as needed adds gtk.m4 file to allowing use of AM_PATH_GTK, that's why it's so big (eautoreconf is required :|).
Created attachment 76137 [details, diff]
Created attachment 76138 [details, diff]
Feel free to commit this.
Please also get the patch upstream so it is included in the next release.
Committed and sent the patches upstream :)