>> And unit 'Linux'.
>
> This can be changed easily, but currently a lot of changes are done in the
> Unix/Linux RTL, and I prefer to wait with changing this, but normally,
> the linux unit should work with 1.1 as well ?
The Linux unit is not compiled for 1.1. You need a {$ifdef
VER1_0}Linux{$else}Unix{$endif}