The following is from a bug report  related to building the mysql-navigator for Debian GNU/kFreeBSD:
The current version fails to build on GNU/kFreeBSD,
because of outdated libtool.
The version of libtool used in mysql-navigator is too old to correctly support Debian GNU/k*BSD, libtool 1.5.2-1 or later is need.
Here is how to update the libtool in your package:
libtoolize -c -f
If possible, please update the next release of the mysql-navigator source tarball using the newer version of libtool.