On Tue, January 16, 2018 16:52, Martok wrote: Hi Martok, > just a quick question: is setting one of the LEVELn values like > {$Optimization LEVEL3} > in a source file supposed to be functionally equivalent to calling the > compiler > for that file with -O3? No - see the discussion at https://bugs.freepascal.org/view.php?id=25873 Tomas