[rwmj]

Assuming that your distro is, say, Debian, then you'll know the answer to that is always libssl-dev, and if you cannot find it then there's a handy search tool (both CLI and web page: https://packages.debian.org) to help you.

I'm not very familiar with MySQL, but for C (which is what we're talking about here) I typed mysql here and it gave me a bunch of suggestions: https://packages.debian.org/search?suite=default&section=all... Debian doesn't ship binary blobs, so I guess that's not a problem.

"I have to build something on 10 different distros" is not actually a problem that many people have.

Also, let the distros package your software. If you're not doing that, or if you're working against the distros, then you're storing up trouble.

[lstodd]

Actually "build something on 10 different distros" is not a problem either, you just make 10 LXC containers with those distros on a $20/mo second-hand Hetzner box, sick Jenkins with trivial shell scripts on them and forget about it for a couple years or so until a need for 11th distro arrives, in which case you spend half an hour or so to set it up.