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Subject: Re: [OMPI devel] [OMPI users] Debug info on Darwin
From: Ralph Castain (rhc_at_[hidden])
Date: 2010-07-25 07:52:52


I can't speak for totalview, but as a developer on Darwin, adding -gstabs+ enables the clean use of gdb and would help immensely!

On Jul 15, 2010, at 8:14 AM, Jeff Squyres wrote:

> 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
>>
>> _______________________________________________
>> devel mailing list
>> devel_at_[hidden]
>> http://www.open-mpi.org/mailman/listinfo.cgi/devel
>>
>
>
> --
> Jeff Squyres
> jsquyres_at_[hidden]
> For corporate legal information go to:
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>
>
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