[Bug target/63661] -O2 miscompiles on OSX 10.10 Yosemite

[vbraun.name at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63661

--- Comment #4 from Volker Braun <vbraun.name at gmail dot com> ---
Good point, -lm is not necessary. It was necessary in the original GSL
testsuite case, but I removed that part.