[LAU] trouble with compiled jack/qjackctl/ffado

[Peder Hedlund]

Quoting Atte André Jensen <atte.jensen at gmail.com>:

> Arnold Krille wrote:
>
>> More like "scons PREFIX=/usr" which installs everything to /usr, otherwise
>> only the libs get installed to /usr/lib, the rest stays in /usr/local. Could
>> give troubles...
>
> Ok, will try that.
>
> How do I figure out what got installed in /usr/local then, in order to
> remove it before installing in the right location?
>

To avoid these problems I always set  
--prefix=/opt/package-name-and-version and use 'stow' to populate  
/usr/local with symlinks. Uninstalling is as easy as using 'stow -D'  
to remove the symlinks and then 'rm -rf /opt/package-name-and-version'.
This way I can have multiple versions of the same package (say Ardour2  
and Ardour3 or GreatApp-1.0stable and GreatApp-1.1alpha) installed  
simultaneously and just stow them back and forth.

To get back to the original question about jack starting from console  
but not qjackctl: did you run 'ldconfig' after installing to update  
the linker cache?
You also might need to do a 'echo /usr/local/lib >  
/etc/ld.so.conf.d/local.conf' before that.