On 15-03-27 07:00 AM, Wolfgang Rostek wrote:
Hi Mathieu,
weeks ago I did a different approach installing packages.
That one I can't recap.
What I suspect happened here is that you installed some of the packages
from source using "make install", which copies the libraries in
/usr/local/lib/* .
*Then* you installed the packaged versions, which go in /usr/lib/*. But
the tricky part is that on Ubuntu and many other (most?) distros, the
ld.so.conf is configured to look in /usr/local/lib first for shared
libraries. If it finds a useable one, it loads that one and stops there.
In such a case, /usr/bin/lttng, installed from packages, would end up
using /usr/local/lib/liblttng-ust*.so, and so on. If both are not of the
exact same version, it can cause obscure problems like the one you had.
This is a very common source of problems in fact. I don't know of any
easy fix unfortunately, short of teaching people about library mangement
;) or bumping the soname of lttng-tools and UST's shared libraries every
release, to make sure non-compatible libraries are not loaded.
Cheers,
Alexandre
Today I tried this one and simply started to get rid of existing things.
I would see this as a beginners confusion and not worth
to spend time here.
I'm quite happy to see the nice LTTng output ;)
Wolfgang R.
Gesendet: Freitag, 27. März 2015 um 14:52 Uhr
Von: "Mathieu Desnoyers" <[email protected]>
An: "Wolfgang Rostek" <[email protected]>, "Alexandre Montplaisir"
<[email protected]>
Cc: [email protected]
Betreff: Re: Aw: Re: Re: [lttng-dev] Can't get any event output from the demo
exe [solved]
Alexandre, maintainer of the PPA packages, will be
back from vacation in 2 weeks.
Perhaps he could look into why you had to explicitly
uninstall packages before installing the PPA then.
Normally "conflicts with" should be taking care
of this kind of dependency.
Thanks,
Mathieu
----- Original Message -----
Just right before the weekend I could repair it.
Seems that I had some trouble with the installed packages.
Here the steps working for me on Ubuntu 14 LTS
http://installion.co.uk/ubuntu/utopic/universe/l/lttng-tools/uninstall/index.html
sudo apt-get remove --auto-remove lttng-tools
https://launchpad.net/~lttng/+archive/ubuntu/ppa
sudo apt-add-repository ppa:lttng/ppa
sudo apt-get update
sudo apt-get install lttng-tools lttng-modules-dkms babeltrace
liblttng-ust-dev python3-babeltrace
thanks for your investigations
Wolfgang R.
--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
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