Re: [lttng-dev] Issues on basic LTTng trace userspace (tutorial) - MONTET Julien via lttng-dev

From: MONTET Julien via lttng-dev <lttng-dev@lists.lttng.org>
To: Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
Cc: lttng-dev <lttng-dev@lists.lttng.org>
Subject: Re: [lttng-dev] Issues on basic LTTng trace userspace (tutorial)
Date: Wed, 24 Mar 2021 19:08:27 +0000	[thread overview]
Message-ID: <PR3PR02MB62025CCA7D6372430CC89AF7D1639@PR3PR02MB6202.eurprd02.prod.outlook.com> (raw)
In-Reply-To: <20210324190053.GG344120@joraj-alpa>

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Hi Jonathan,

Thank you so much, it is 100% working.

Let's enjoy LTTng !!!

Have a nice day,

________________________________
De : Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
Envoyé : mercredi 24 mars 2021 20:00
À : MONTET Julien <julien.montet@reseau.eseo.fr>
Cc : lttng-dev <lttng-dev@lists.lttng.org>
Objet : Re: [lttng-dev] Issues on basic LTTng trace userspace (tutorial)

On Wed, Mar 24, 2021 at 06:55:37PM +0000, MONTET Julien wrote:
> Hi Jonathan,
>
> You are absolutely right !
> I have two different lttng :   find /usr -name "*liblttng-ust*" Ubuntu Pastebin<https://paste.ubuntu.com/p/NVtXPhj4fW/>

Glad to know that we are making progress.

>
> According to you, what would be the best solution to solve this issue ?
> I have indeed a folder named lttng-ust where I have made the (wrong) configure / make.

Go into the lttng folder and do:
  sudo make uninstall
  sudo ldconfig

>
>
> I tried to (temporary) remove all the libttng* /usr/local/lib/, but I face this problem :

That should works also.

> /usr/bin/ld: hello-tp.o: in function `__lttng_events_init__hello_world':
> hello-tp.c:(.text+0xe56): undefined reference to `lttng_ust_probe_register'
> /usr/bin/ld: hello-tp.o: in function `__lttng_events_exit__hello_world':
> hello-tp.c:(.text+0xeb2): undefined reference to `lttng_ust_probe_unregister'
> collect2: error: ld returned 1 exit status

Did you remove the -L/usr/local/bin flag? There should be no reason to keep it
at this point.

>
> In the worst case scenario I am able to get my last clean snapchot.

That is also a good bet :).

--
Jonathan Rajotte-Julien
EfficiOS

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