--- exports/Makefile.orig	2012-11-27 08:24:53.000000000 +0900
+++ exports/Makefile	2012-11-28 01:24:49.000000000 +0900
@@ -122,6 +122,7 @@
 #http://stackoverflow.com/questions/7656425/makefile-ifeq-logical-or
 ifeq ($(OSNAME), $(filter $(OSNAME),FreeBSD NetBSD))
 
+EXTRALIB += -lgfortran
 so : ../$(LIBSONAME)
 
 ../$(LIBSONAME) : ../$(LIBNAME) linux.def linktest.c