--- src/Makevars.orig	2014-07-24 16:49:47 UTC
+++ src/Makevars
@@ -10,6 +10,9 @@ PKG_LIBS = `$(R_HOME)/bin/Rscript -e "Rc
 ifeq ($(UNAME), SunOS)
 PKG_LIBS += -lkstat -lsendfile
 endif
+ifeq ($(UNAME), FreeBSD)
+PKG_LIBS += -lkvm
+endif
 
 PKG_CPPFLAGS = -I./libuv/include -I./http-parser -I./sha1 -I./base64
 
