[Llvm-bgq-discuss] missing debugging symbols

[Rob Latham]

On 08/09/2014 10:26 PM, Hal Finkel wrote:
> ----- Original Message -----
>> From: "Rob Latham" <robl at mcs.anl.gov>
>> To: llvm-bgq-discuss at lists.alcf.anl.gov
>> Sent: Wednesday, August 6, 2014 2:56:00 PM
>> Subject: [Llvm-bgq-discuss] missing debugging symbols
>>
>> When I compile MPICH-master with /soft/compilers/bgclang/bin/bgclang
>> ,
>> gdb (the CNK
>> /bgsys/drivers/ppcfloor/gnu-linux/bin/powerpc64-bgq-linux-gdb )
>> doesn't
>> know about debugging symbols.
>>
>> is there a different debugger I should use with bgclang?
>
> bgclang generates DWARF that only recent versions of gdb can understand.

thanks Hal.  so bgclang is generating dwarf4?  then one would need 
gdb-7.5.1 or newer (but if one is going to build gdb today, then why not 
7.8...)

==rob

  I really need to package up a version for bgclang (with the QPX 
patches), but I've not done that yet. Aside from QPX support, a stock 
gdb will work (I have one in /home/hfinkel/install/gdb/bin/gdb on vesta, 
and you're welcome to use that if convenient). Packaging a recent gdb 
with bgclang is on my TODO list for the next bgclang release which 
should be coming within the next two weeks.
>
> Thanks again,
> Hal
>
>>
>> ==rob
>>
>> --
>> Rob Latham
>> Mathematics and Computer Science Division
>> Argonne National Lab, IL USA
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>>
>

-- 
Rob Latham
Mathematics and Computer Science Division
Argonne National Lab, IL USA