Quick and dirty fix after my error. This defines fix build on linux with fresh gcc, but broke on mac
Merge pull request #9180 from vovkasm/cmake-mac-quick-fix

Quick and dirty fix after my error. This defines fix build on linux with...
Adds gnutls-dev to linux deps
Merge pull request #9181 from ricardoquesada/linux_deps

Adds gnutls-dev to linux deps