The fortify source mitigation is set by the _FORTIFY_SOURCE macro set along with the same optimization level. We used a -DFORTIFY_SOURCE=0 which is invalid and should be -D_FORTIFY_SOURCE=0 instead.
To be honest, we could even remove this flag as well, but I think it is fine to leave it, but it should be spelled correctly then :).
disconnect3d
commented
1 year ago 
The fortify source mitigation is set by the _FORTIFY_SOURCE macro set along with the same optimization level. We used a
-DFORTIFY_SOURCE=0which is invalid and should be-D_FORTIFY_SOURCE=0instead.To be honest, we could even remove this flag as well, but I think it is fine to leave it, but it should be spelled correctly then :).