--- Makefile.orig	2013-11-16 17:28:28.000000000 +0100
+++ Makefile	2013-11-16 17:27:51.000000000 +0100
@@ -11,7 +11,7 @@
 #	On GNU,		        use S_CHAR="char"
 #
 
-CFLAGS+=	-DF77 -DS_CHAR="char"
+CFLAGS+=	-DF77 -DS_CHAR="char" -Wno-error=return-type
 #CFLAGS+=	-DS_CHAR="char"
 OBJS=		rat4.o lookup.o getopt.o
 
@@ -26,13 +26,15 @@
 clean:
 	rm -f *.o *~ ratfor ratfor77 a.out test testw test.f testw.f
 
-test: ratfor
+test: test.f
+
+test.f: ratfor
 	./ratfor -o test.f test.r
-	f77 -o test test.f
 
-testw: ratfor
+testw: testw.f
+
+testw.f: ratfor
 	./ratfor -o testw.f testw.r
-	f77 -o testw testw.f
 
 tests: test testw
 	./test