Re: [ptxdist] How to get valgrind working in ptx build

[<jon.bird@generaldynamics.uk.com>]

Thanks for the replies,

On 07 August 2013 14:11, Jürgen Beisert <mailto:jbe@pengutronix.de> wrote:

> Hi Jon,
> 
> On Wednesday 07 August 2013 14:32:50 jon.bird@generaldynamics.uk.com
> wrote: 
>> I am trying to get valgrind enabled under Ptxdist. I can build the
>> package ok and deploy it however when I attempt to run an app on the
>> target system it fails complaining that it needs debugging symbols
>> from glibc. The suggesion from online is that I either need a
>> non-stripped glibc or an additional file which holds the symbols but
>> it isn't clear from online searching what this file is called or
>> where to locate it in the file system. The toolchain I am using is
>> the OSELAS.Toolchain-2012.12.1 x86 toolchain (prebuilt Debian
>> package), I am hoping I just need to lift the relevant file(s) from
>> there. 
> 
> Sounds like you need to boot via network (NFSroot) and need to use
> the "root-debug" directory instead of the "root" one as the root
> filesystem.  
> 
> "root-debug" still contains all debug info.
> 
> Debug info for the main glibc is a different issue. This would
> drastically increase the binary, so it is disabled by default. 
> When building the toolchain you can enable a special menu entry to
> keep the debug info also for glibc (read its help!): 
> 
> ptxdist menuconfig
>   misc                          --->
>    [*] debuggable toolchain internals
> 

I'll give the nfs-root thing a go but from what you've said it sounds like I need to rebuild the toolchain with debugging enabled.

Rgs,


Jon.




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