Regarding boost, yep my bad! I did not know that when I asked that question.

As for grayjay, it's source available, that's fine to me, there is a difference naturally and it's worth discussing, but I'd rather live in a world where every piece of software is source available and we discuss the merits of source availability vs pure FOSS, than in a world where understanding our software requires days or months of work looking at asm and poking it with a stick