x86_64-pc-linux-gnu-g++ -march=native -O2 -Wall -I. -fPIC -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS -O2 -c -o clalsadrv.o clalsadrv.cc amd64box ~ # emerge --info | grep CXXFLAGS CXXFLAGS="-march=native -O2"
fixed in ebuild for 2.0.0