In this directory, you can find sources of libraries used by MuPAD.
Currently, this includes:

MKpathsea.tgz    -- A patched version of the Kpathsea library.
                    This is used to find pk-Files, optionally
                    generating them along the way.

                    License: LGPL.

gcc-3.0.3.tar.gz -- The GNU compiler suite includes libgcc_s.so.1 and
                    libstdc++.so.3.0.2 as distributed with MuPAD 2.5.1
                    for Unix platforms.

                    Licenses: LGPL and GPL.