mohamad.gebai@polymtl.ca writes:

Yes, the bug is actually only in the Ubuntu package (missing liburcu*.pc 
files). It is fixed everywhere else, including the LTTng PPA. There is a 
bug report about it on Launchpad. Either ways, this fall back avoids 
getting an error with the Ubuntu packages.

<snip>

Hopefully Stefan will be able to check on the RPM based ones.

Did you identify a bug report against Ubuntu for these packages?