#!/bin/sh case `uname -s` in Darwin) echo 'CXX = clang++' > Makefile.rules echo 'CXXFLAGS_PLATFORM = -march=native -msse4.2' >> Makefile.rules echo 'LFLAGS = -flto' >> Makefile.rules ;; Linux) echo 'CXX = g++' > Makefile.rules echo 'CXXFLAGS_PLATFORM = -mssse3 -msse4.2' >> Makefile.rules echo 'LFLAGS = ' >> Makefile.rules ;; esac