UPDATE:
Yay this is now fixed, seemed to be a fairly simple solution too. All good!
http://www.freebsd.org/cgi/query-pr.cgi?pr=ports/102922
A few days ago I went to upgrade snort to the latest version (from 2.4.5 to 2.6.0) and it failed at the 'make build' stage. I've just had a chance to look into the problem and it appears to be to do with the build of the dynamic rule processing functionality. A temporary workaround is to build snort with the '-DWITHOUT_DYNAMIC' flag on FreeBSD:
CODE:
cd /usr/ports/security/snort
make -DWITHOUT_DYNAMIC clean install
Hopefully a full fix will be found in the next few weeks. I'm about to submit a problem report (PR) once the maintainer's had a chance to look it over, I'll cc it to the snort-users mailing list as well in the hope someone there will have a better idea what the problem is.
The PR is included in the extended article.