[fpc-devel] Which unit does -gl parameter use?

[Sven Barth]

Am 23.08.2010 10:23, schrieb Graeme Geldenhuys:
> Hi,
>
> When you add the -gl   (debug line info added to compiled executable)
> parameter to a project, which unit does it use to gather the debug
> information?
>
>    LineInfo (via stab information) or  LnfoDwrf (via dwarf information)?
>
>
> How do you toggle between the two? How do I know which one of the two
> is being used?
>
> At the moment, when I compile with -gl, then the GetLineInfo doesn't
> return any function name information. I then removed the -gl and
> explicitly added LnfoDwrf into my project uses clause (thinking that
> Stab info might be old and outdated), and still the function name
> information return by GetLineInfo was blank.  I'm testing on a 64-bit
> Linux system.
>
>

According to the code in compiler\pmodules.pas (~659) (see below) the 
compiler decides this depending on the used debug format. I might be 
wrong, but for Linux this should be dwarf.

{ Lineinfo unit }
if (cs_use_lineinfo in current_settings.globalswitches) then begin
   if (paratargetdbg = dbg_stabs) then
     AddUnit('lineinfo')
   else
     AddUnit('lnfodwrf');
end;

Regards,
Sven