[lttng-dev] Problem using pthread and libc wrapper

[Jonathan Rajotte Julien]

Hi Christopher,

I guess you are talking about this [1]. I'm very sorry I forgot to send 
the follow-up to the mailing list but here is a short explication:

- lttng-ust uses a combination of hidden and weak attribute for it's 
tracepoint start and stop section.
- The current gcc included in yocto/fido is either gcc 4.8/4.9. Both 
have a series of patches that gets applied before it's compilation.
- One patch change the behavior regarding the weak and hidden attributes 
on compilation.
- The patch caused the registration of application-specific tracepoints 
only since the internal pointer to the registering section was always 
the same.
- We have already contacted the OE mailing list regarding this [2].
- You can simply empty the patch [4] in question and rebuild the toolchain.

Cheers


[1] https://lists.lttng.org/pipermail/lttng-dev/2016-January/025437.html
[2] https://lists.lttng.org/pipermail/lttng-dev/2016-January/025454.html
[3] cat /dev/null > 
./meta/recipes-devtools/gcc/gcc-4.9/0024-PR-target-32219.patch



On 2016-06-29 01:22 AM, Christopher Schwager wrote:
>
> Hello,
>
> I ran into the same issue like Martin. Is there already a fix for it ?
>
> Regards,
>
> Christopher
>
>
>
> _______________________________________________
> lttng-dev mailing list
> lttng-dev at lists.lttng.org
> https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev

-- 
Jonathan R. Julien
Efficios