In other words there are not so much BSD support for curent releases beside FreeBSD, is that correct, i never look into the code? The given link looks a litte bit unmaintained. I see no information how good is the support, which version can you build & run.
When i summarize no entries in pkgsrc(fpc or lazarus, problems with NetBSD), OpenBSD ports has only fpc the same like DragonFly. Lazarus on OpenBSD could be broken.