/home/cpanrun/build/5.6.1/bin/perl Build.PL 
Error: pkgconfig is not available on your system
It is available from http://pkgconfig.freedesktop.org/
Couldn't run Build.PL:  at /home/cpanrun/build/5.6.1/lib/site_perl/5.6.1/Module/Build/Compat.pm line 118.