make test make ./main --file tags2.txt environment: g++ (GCC) 4.5.0 Linux nal_Ra 2.6.33-ARCH #1 SMP PREEMPT Sun Apr 4 10:27:30 CEST 2010 x86_64 Intel(R) Core(TM) i7 CPU 860 @ 2.80GHz GenuineIntel GNU/Linux boost 1.41.0-1 GNU Make 3.81 GNU Emacs 23.1.1 ... ;) tags.txt: superuser.com, tags per question, CC-BY-SA