PocketHAL's license is extremely clear, indeed. For end users.
It has only 2 lines:
This software is copyrighted software. Permission to use this software in your own application (game) is hereby granted without fee
That is not related to us. The second one:
Distribution of the PocketHAL library (by itself or as part of another library distribution) is strictly prohibited.
is clear enough about distribution, but it doesn't say anything about linking.
There are software license which are incompatible with ours, even with dynamic linking.
Anyway, we'll review the software, and if we decide to add support for it in GledPlay, will contact the author, Thierry Tremblay (who I believe is you), to be sure that we will not be committing any copyright infringement of his software.