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Subject: Re: [OMPI devel] [OMPI users] Debug info on Darwin
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2010-07-15 10:14:01


Resurrecting this orphaned discussion...

Peter: so what exactly do you need? -gstabs or -gstabs+ when compiling these files on Darwin? (or, more specifically, whenever the back-end compiler supports one/both of these flags)

On Jun 9, 2010, at 11:43 PM, Paul H. Hargrove wrote:

>
>
> Jeff Squyres wrote:
> > On Jun 4, 2010, at 5:02 PM, Peter Thompson wrote:
> >
> >
> >> It was suggested by our CTO that if these files were compiled as to
> >> produce STABS debug info, rather than DWARF, then the debug info would
> >> be copied into the executables and shared libraries, and we would then
> >> be able to debug with Open MPI without a problem. I'm not sure if this
> >> is the best place to offer that suggestion, but I imagine it's not a bad
> >> place to start. ;-)
> >>
> >
> > Having just moved this to the "devel" list...
> >
> > I don't think we'd mind doing what you propose if it's not too icky. These files are explicitly there for debuggers like TV, after all.
> >
> > So how do we do that? (I don't know anything about STABS or DWARF)
> >
> >
>
> Extracted from "man gcc" on Darwin host:
>
>
> -gstabs
> Produce debugging information in stabs format (if that is
> supported), without GDB
> extensions. This is the format used by DBX on most BSD
> systems. On MIPS, Alpha and
> System V Release 4 systems this option produces stabs
> debugging output which is not
> understood by DBX or SDB. On System V Release 4 systems this
> option requires the GNU
> assembler.
>
> -gstabs+
> Produce debugging information in stabs format (if that is
> supported), using GNU
> extensions understood only by the GNU debugger (GDB). The
> use of these extensions is
> likely to make other debuggers crash or refuse to read the
> program.
>
>
>
> --
> Paul H. Hargrove PHHargrove_at_[hidden]
> Future Technologies Group
> HPC Research Department Tel: +1-510-495-2352
> Lawrence Berkeley National Laboratory Fax: +1-510-486-6900
>
> _______________________________________________
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>

-- 
Jeff Squyres
jsquyres_at_[hidden]
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