When discussing a list of libraries to be included in the spec (http://moblin.org/documentation/moblin-compliance-tools/proposed-library-list), it was noted that sonames of libtiff and libtiffxx in Debian-based systems differ from sonames in upstream and other distributions. The reasons of such situation are explained here: http://www.asmail.be/msg0054917291.html From functionality point of view, libtiff.so.3 Moblin and, let's say, libtiff.so.4 in Ubuntu are identical. So it could be reasonable for Ubuntu guys to provide libtiff.so.3 and libtiffxx.so.3 symlinks to be compatible with other OSVs. However, at the current state of art Debian-based systems will fail libchk-me tests for libtiff and libtiffxx, since they have neither real files nor symlinks named 'libtiff.so.3' and 'libtifxx.so.3'. So someone should discuss this question with OSVs; either the OSVs will provide symlinks (ot solve the issue in some other way) or tiff libraries should be dropped from the specification.