My thought was that if you specified "-g", you probably wanted -gstabs+. Indeed, for years, I didn't know that -gstabs+ was required on OS X to make debugging symbols work in gdb...
On Jul 27, 2010, at 3:43 PM, Barrett, Brian W wrote: > Sorry for not replying sooner, I was on vacation the last couple of days. > > Ew - why do it that way? If I as a user specified -g, I sure don't want that > to magically become -gstabs. Overriding Autoconf's addition of -g with > -gstabs+ is fine, but overriding what the user says is just wrong. > > Brian > > On Jul 26, 2010, at 9:07 AM, Jeff Squyres wrote: > > > Ok; a commit is queued up for the trunk tonight that should do this: > > > > - If we're on Darwin > > - And -g is in CFLAGS already > > - Then do a test compile to see if -gstabs+ works > > - If it does, then add it to CFLAGS > > - Then double check and uniq-ify CFLAGS (to ensure -gstabs+ wasn't in there > > already) > > > > > > On Jul 25, 2010, at 7:52 AM, Ralph Castain wrote: > > > >> 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 phhargr...@lbl.gov > >>>> Future Technologies Group > >>>> HPC Research Department Tel: +1-510-495-2352 > >>>> Lawrence Berkeley National Laboratory Fax: +1-510-486-6900 > >>>> > >>>> _______________________________________________ > >>>> devel mailing list > >>>> de...@open-mpi.org > >>>> http://www.open-mpi.org/mailman/listinfo.cgi/devel > >>>> > >>> > >>> > >>> -- > >>> Jeff Squyres > >>> jsquy...@cisco.com > >>> For corporate legal information go to: > >>> http://www.cisco.com/web/about/doing_business/legal/cri/ > >>> > >>> > >>> _______________________________________________ > >>> devel mailing list > >>> de...@open-mpi.org > >>> http://www.open-mpi.org/mailman/listinfo.cgi/devel > >> > >> > >> _______________________________________________ > >> devel mailing list > >> de...@open-mpi.org > >> http://www.open-mpi.org/mailman/listinfo.cgi/devel > >> > > > > > > -- > > Jeff Squyres > > jsquy...@cisco.com > > For corporate legal information go to: > > http://www.cisco.com/web/about/doing_business/legal/cri/ > > > > > > _______________________________________________ > > devel mailing list > > de...@open-mpi.org > > http://www.open-mpi.org/mailman/listinfo.cgi/devel > > > > -- > Brian W. Barrett > Dept. 1423: Scalable System Software > Sandia National Laboratories > > > > > > _______________________________________________ > devel mailing list > de...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/devel > -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
