I need some advise: Is there a good portable and free (really free, not GPL!) #implementation of #bcrypt in #C around?

There's #OpenBSD source I could use, but integrating that would probably be quite a hassle...

Background: I want to start creating a second credential checker for #swad using files. And it probably makes sense to support a sane subset of #Apache's #htpasswd format here. Looking at the docs:
https://httpd.apache.org/docs/current/misc/password_encryptions.html
... the "sane subset" seems to be just bcrypt. MAYBE also this apache-specific flavor of "iterated" MD5, although that sounds a bit fishy ...