question regarding ABI

[silenius]

Hello,

I was wondering about compatibility between builds and FreeBSD versions.
Am I correct that stuff build on X.Y can be used on X.Z with Z >= Y, as ABIs are stable in a major version? (I don't care about kmods)
So for example packages build on a 13.4-RELEASE will run on 13.4 and 13.5 but not on 13.0, 13.1, 13.2, 13.3?
Are additions to ABI possible in major versions?

Thanks!

[brd]

This is correct, FreeBSD strives to maintain ABI compatibility in a branch.

[silenius]

thanks, and is it correct that packages build on X.Y are not 100% sure to run on X.Z where Z < Y ?

[brd]

Correct, that invites trouble and should be avoided.