CDT 1.11 was set to default on 12/16/13
December 18, 2013
During yesterday's maintenance, the Cray Developer Toolkit (CDT) 1.11 was set to default on Edison, which contains
Note, the compiler wrappers, cc, CC and ftn, in craype/2.00 and later use the pkg-config tool to dynamically resolve and order dependencies based on the package configuration files (.pc). If you compile software for other users, you are encouraged to read the man page of pkg-config, and also craypkg-gen (do module load craypkg-gen to access the craypkg-gen command and its man page), which generates package configuration files and help you to write modulefiles that can be integreated to the compiler wrappers.
The CDT 1.11 release note can be found here,