http://docwiki.embarcadero.com/RADStudio/Rio/en/Conditional_compilation_(Delphi)
begin{$IFDEF WIN32} Label1.Caption := 'WIN32';{$ELSE WIN64} Label1.Caption := 'WIN64';{$ENDIF}end;
begin{$IFDEF WIN32} Label1.Caption := 'WIN32'; {$ENDIF}{$IFDEF WIN64} Label1.Caption := 'WIN64';{$ENDIF}end;