Hi
someone knows why there is no use of avx or avx2?

         **********  cpuminer-opt 3.7.2  ***********
     A CPU miner with multi algo support and optimized for CPUs
     with AES_NI and AVX extensions.
     BTC donation address: 12tdvfF7KmAsihBXQXynT6E6th2c2pByTT
     Forked from TPruvot's cpuminer-multi with credits
     to Lucas Jones, elmad, palmd, djm34, pooler, ig0tik3d,
     Wolf0, Jeff Garzik and Optiminer.

CPU: Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz
CPU features: SSE2 AES AVX AVX2
SW built on Nov  1 2017 with GCC 4.8.3
SW features: SSE2 AES AVX AVX2
Algo features: SSE2
Start mining with SSE2