This software requires for compiling:
- gtk >= 2.6
+- devel of gtk
- ruby
- ruby-gettext >= 0.8.0
- ruby-gtk2 >= 0.12
- devel of ruby-gnome2 (mkmf-gnome2.rb, rbgobject.h)
-- libexif
+- devel of libexif
Note: theoretically, gtk and ruby-gtk2 are not needed if
you're gonna use only the backend script (the only lost