To me:
Configuring liquidsoap ...
su: cannot set user id: Resource temporarily unavailable
Configure failed for liquidsoap-1.1.1-full.tar.gz; aborting
Installer exited with error, aborting
CentOS release 6.5 (Final)
Linux 2.6.32-431.el6.x86_64 #1 SMP Fri Nov 22 03:15:09 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux