--- ffi/Makefile.orig	2020-08-31 20:13:38 UTC
+++ ffi/Makefile
@@ -20,7 +20,7 @@ else
 endif
 
 # Tools.
-ifeq ($(shell uname -s), Darwin)
+ifneq ($(filter Darwin FreeBSD,$(shell uname -s)),"")
 	INSTALL		?= ginstall
 else
 	INSTALL		?= install