Restrict list of exported symbols via -export-symbols-regex

[mbiebl]

While this approach doesn't cover every exported symbol (for that we should probably look into a version script), it at least catches the most common mistakes like in #918 (comment)

[StorageGhoul]

Can one of the admins verify this patch?

[mbiebl]

A more elaborate fix would probably involve symbol versioning and a version script. Not sure how well that would work with stub symbols and all. But if this is something you'd prefer, I could at least try to take a look.

The -export-symbols-regex is a rather cheap "hack" to avoid a bit of the whack-a-mole game we've been playing.

[vojtechtrefny]

Jenkins, ok to test.

[vojtechtrefny]

The -export-symbols-regex is a rather cheap "hack" to avoid a bit of the whack-a-mole game we've been playing.

I think this is a good temporary solution, we definitely need to do better in the future. I was thinking about adding the check you are running to our CI. It shouldn't be that hard to run it on the Ubuntu runners in GH actions.

[tbzatek]

Oh nice, good idea with the regex.