--- Makefile.orig	2021-07-11 23:40:11 UTC
+++ Makefile
@@ -24,8 +24,8 @@ SHARED ?= $(PREFIX)/share/zita-at1
 
 VERSION = 0.6.2
 CPPFLAGS += -MMD -MP -DVERSION=\"$(VERSION)\" -DSHARED=\"$(SHARED)\"
-CXXFLAGS += -O2 -Wall -ffast-math -pthread
-CXXFLAGS += -march=native
+CXXFLAGS += -Wall -ffast-math -pthread
+CXXFLAGS += ${FREEBSD_CXXFLAGS_SIMD}
 
 
 all:	zita-at1