lukasepple/primes — pull request #1 by Lechindianer (2014-04-06 12:32:33+00:00)
Title: Update Makefile

Siehe: https://stackoverflow.com/questions/16344445/im-using-math-h-and-the-library-link-lm-but-undefined-reference-to-pow-st

und

https://stackoverflow.com/questions/1033898/why-do-you-have-to-link-the-math-library-in-c