https://gitlab.synchro.net/main/sbbs/-/issues/780#note_5562
Not sure, to be honest. Can probably close this since I decided not to use that OK. I am now trying Void Linux which also used 13.2.0 but everything compiles fine there.
--- SBBSecho 3.20-Linux
* Origin: Vertrauen - [vert/cvs/bbs].synchro.net (1:103/705)