Hello,
Please add function SDL_SoftStretch to sdl.pas
function SDL_SoftStretch(src: PSDL_Surface; srcrect: PSDL_Rect; dst: PSDL_Surface; dstrect: PSDL_Rect): Integer;
{$EXTERNALSYM SDL_SoftStretch}
cdecl; external{$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SoftStretch'{$ELSE}SDLLibName{$ENDIF __GPC__}{$ENDIF};
{$EXTERNALSYM SDL_SoftStretch}
In Windows and Linux works fine ...