Ah, glad that nobody will ever again ask me when hardware acceleration will be enabled, e. g. OpenCL. It’s not part of the “public” API, so we don’t need to care about it. Sorry for the sarcasm.
Seriously, I don’t believe your problems with compiling Bullet including the extra libs will be a real issue. You can either compile the extra libs and link libpandabullet.so statically, or link dynamically and distribute them alongside libpandabullet.so.
For now, if you really want to explore, you can simply remove the includes and all methods dealing with serialisation/deserialisation from the source code. Don’t be afraid to mess around with code. The next release will be a full rewrite anyway.