The symbol librock_LIDESC_COMBINE_GPL_OK has the following meaning(s) in the Librock License Awareness System

The Free Software Foundation says this license is GPL compatible.

Example Licenses

Some licenses with the symbol in their TAGS string, (with section identifier or notes) are:

Modified BSD license
Clarified Artistic License
GNU General Public License Version 2, June 1991
GNU LESSER GENERAL PUBLIC LICENSE Version 2.1, February 1999
MIT license
The Sleepycat License
W3C License
The license of zlib