+POPCOUNT=$(shell grep -q popcnt /proc/cpuinfo && echo 1)
+
+ifeq ($(POPCOUNT), 1)
+ POPCOUNT_FLAG=-DHAS_NATIVE_POPCOUNT
+else
+ POPCOUNT_FLAG=-DPOPCOUNT_TABLE
+endif
+
+ifeq ($(VERBOSE), true)
+ HIDE=
+else
+ HIDE=@
+endif
+
+OPT_FLAGS=-O4 $(POPCOUNT_FLAG) -fno-PIC -static