There are a few spelling mistakes in the sources that the Debian package checker (lintian) reports on. I have made a patch for Debian that I would like to include in the upstream sources if possible.
I have also tried to reopen bug #2909868 (well, it became item ID: 3442522) but I find it more secure to mention the problem here as well. Can you please upgrade the sim/ucsim/libltdl/ltdl.c to a newer libtool version?
Sorry for being so slow in fixing the Debian packages but I have started working on the sdcc-3.1.0 Debian package. Version 3.0.0 is waiting for my Debian sponsor.