[Audacity-users] Audacity error on xubuntu 16.04

Discussion:

Chris Green

2016-11-27 21:40:23 UTC

I haven't used audacity for a while and now it fails to load with:-

chris$ audacity
audacity: error while loading shared libraries: libSoundTouch.so.0:
cannot open shared object file: No such file or directory
chris$

This is on xubuntu 16.04. Does anyone know what might be wrong?
--
Chris Green

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stan

2016-11-27 22:31:35 UTC

Permalink

On Sun, 27 Nov 2016 21:40:23 +0000

Post by Chris Green
I haven't used audacity for a while and now it fails to load with:-
chris$ audacity
libSoundTouch.so.0: cannot open shared object file: No such file or
directory chris$
This is on xubuntu 16.04. Does anyone know what might be wrong?

I think you need to install the soundtouch package. This is the
description from Fedora, so you will have to find the equivalent for
xubuntu.

Name : soundtouch
Version : 1.9.2
Release : 3.fc24

URL : http://www.surina.net/soundtouch/
Summary : Audio Processing library for changing Tempo, Pitch and
Playback Rates Description :
SoundTouch is a LGPL-licensed open-source audio processing library for
changing the Tempo, Pitch and Playback Rates of audio streams or
files. The SoundTouch library is suited for application developers
writing sound processing tools that require tempo/pitch control
functionality, or just for playing around with the sound effects.

The SoundTouch library source kit includes an example utility
SoundStretch which allows processing .wav audio files from a
command-line interface.

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Chris Green

2016-11-28 20:06:22 UTC

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Post by stan
On Sun, 27 Nov 2016 21:40:23 +0000

I think you need to install the soundtouch package. This is the
description from Fedora, so you will have to find the equivalent for
xubuntu.
Name : soundtouch
Version : 1.9.2
Release : 3.fc24

It is installed:-

***@t430# dpkg -l | grep soundtouch
ii libsoundtouch-dev:amd64 1.9.2-2 amd64 Development files for the sound stretching library
ii libsoundtouch1:amd64 1.9.2-2 amd64 Sound stretching library

However as far as I can see the above packages don't install the file
that audacity is looking for.

Strangely I have another xubuntu 16.04 system where audacity works
perfectly OK and that doesn't have libSoundTouch.so.0 either.

It seems that audacity on this system (where it doesn't work) is
looking for libSoundTouch.so.0 and 16.04 Ubuntu has libSoundTouch.so.1.
--
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stan

2016-11-28 21:49:45 UTC

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On Mon, 28 Nov 2016 20:06:22 +0000

Post by Chris Green
It is installed:-
ii libsoundtouch-dev:amd64 1.9.2-2
amd64 Development files for the sound stretching library ii
libsoundtouch1:amd64 1.9.2-2 amd64
Sound stretching library
However as far as I can see the above packages don't install the file
that audacity is looking for.
Strangely I have another xubuntu 16.04 system where audacity works
perfectly OK and that doesn't have libSoundTouch.so.0 either.
It seems that audacity on this system (where it doesn't work) is
looking for libSoundTouch.so.0 and 16.04 Ubuntu has
libSoundTouch.so.1.

That is strange. I wonder if they were compiled with slightly
different constraints, so one wants >= .0, and one wants == .0 .

If you are feeling adventurous you could create a symbolic link to the
so.1 file for the so.0 file. (with su or root)

e.g. ln -s /usr/lib64/libSoundTouch.so.1 /usr/lib64/libSoundTouch.so.0

The paths might be different on your system. The reason that is a
little risky is that the .1 version might have a different api than
the .0 version. But the difference might be completely irrelevant to
audacity, because it might not use the part that changed.

For what it's worth, the audacity here is version 2.1.3, and it uses
the .1 version of the SoundTouch library without problem.

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Chris Green

2016-11-30 22:48:11 UTC

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Post by stan
On Mon, 28 Nov 2016 20:06:22 +0000

Yes, that's fixed it!

Post by stan
The paths might be different on your system. The reason that is a
little risky is that the .1 version might have a different api than
the .0 version. But the difference might be completely irrelevant to
audacity, because it might not use the part that changed.
For what it's worth, the audacity here is version 2.1.3, and it uses
the .1 version of the SoundTouch library without problem.

On my systems the files are in /usr/lib/x86_64-linux-gnu, so I just
did:-

***@t430# cd /usr/lib/x86_64-linux-gnu
***@t430# ln -s libSoundTouch.so.1 libSoundTouch.so.0

That doesnt exist on my other 16.04 system where audacity works fine
though, very odd.
--
Chris Green

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stan

2016-11-28 22:25:41 UTC

Permalink

On Mon, 28 Nov 2016 20:06:22 +0000

Post by Chris Green
Strangely I have another xubuntu 16.04 system where audacity works
perfectly OK and that doesn't have libSoundTouch.so.0 either.

You could run ldd on the audacity binary to see which version this
binary is dependent on. You probably want to run it through grep,
since audacity is dependent on a *lot* of libraries.

ldd /usr/bin/audacity | grep -i soundtouch

It's probably dependent on .1, which is why it is working.

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Chris Green

2016-11-30 22:53:33 UTC

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Post by stan
On Mon, 28 Nov 2016 20:06:22 +0000

Post by Chris Green
Strangely I have another xubuntu 16.04 system where audacity works
perfectly OK and that doesn't have libSoundTouch.so.0 either.

Both systems say the following:-

chris$ ldd /usr/bin/audacity | grep -i soundtouch
libSoundTouch.so.1 => /usr/lib/x86_64-linux-gnu/libSoundTouch.so.1 (0x00007f70f87fd000)

So why is one system failing with:-

audacity: error while loading shared libraries: libSoundTouch.so.0: cannot open shared object file: No such file or directory

since accoring to ldd it shouldn't be trying to load libSoundTouch.so.0.

Oh well, the workaround in the previous E-Mail works.
--
Chris Green

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Chris Green

2016-11-30 23:26:51 UTC

Permalink

Post by Chris Green

Post by stan
On Mon, 28 Nov 2016 20:06:22 +0000

Post by Chris Green
Strangely I have another xubuntu 16.04 system where audacity works
perfectly OK and that doesn't have libSoundTouch.so.0 either.

It's very curious, I can see no reason whatsoever for the audacity on
the 'bad' system to ask for libSoundTouch.so.0, searching for name
using the 'strings' command produces the following:-

chris$ strings /usr/bin/audacity | grep libSound
libSoundTouch.so.1
chris$

The two binaries (/usr/bin/audacity) are identical.

I have also compared the system call sequence using ptrace and the two
systems are near enough identical except that the 'bad' one loads
libSoundTouch.so.0. However there is a difference here, the 'good'
one goes straight to /usr/lib/x86_64-linux-gnu/libSoundTouch.so.1
whereas the 'bad' one searches through the whole series of possible
library locations before finding libSoundTouch.so.0.
--
Chris Green

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stan

2016-12-01 03:46:28 UTC

Permalink

On Wed, 30 Nov 2016 23:26:51 +0000

Post by Chris Green

Post by Chris Green
Both systems say the following:-
chris$ ldd /usr/bin/audacity | grep -i soundtouch
libSoundTouch.so.1
=> /usr/lib/x86_64-linux-gnu/libSoundTouch.so.1 (0x00007f70f87fd000)
So why is one system failing with:-
cannot open shared object file: No such file or directory
since accoring to ldd it shouldn't be trying to load
libSoundTouch.so.0.
Oh well, the workaround in the previous E-Mail works.

This is really bizarre. Is it possible that you have an old version
dependent on .0 in /usr/local, and that /usr/local is before /usr/bin
in your $PATH? That would cause this error, as it looked for the
earlier version.

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Chris Green

2016-12-01 08:53:52 UTC

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Post by stan
On Wed, 30 Nov 2016 23:26:51 +0000

Post by Chris Green

Aaarrrggghhh!!! Why didn't I think of that? I have a locally built
Audacity in /usr/local/bin which I built before 2.1.2 was in the
xubuntu repositories (there was a particular bug I needed to avoid).

Thank you! :-)
--
Chris Green

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