--- makefile.orig	2016-03-25 04:33:28.000000000 +0100
+++ makefile	2017-01-12 10:10:40.481484000 +0100
@@ -1626,7 +1626,7 @@
 	@make $(DEFINES) CFLAGS="$(CFLAGS) -DUSE_ASM -fomit-frame-pointer -O3"
 
 FreeBSD:
-	make $(DEFINES) CFLAGS="$(CFLAGS) -fomit-frame-pointer -pthread"
+	make $(DEFINES) CFLAGS="$(CFLAGS) %%CFLAGS%%"
 
 NetBSD:
 	make $(DEFINES) CFLAGS="$(CFLAGS) -fomit-frame-pointer -pthread"