$OpenBSD: patch-Makefile,v 1.1.1.1 2015/01/12 05:51:22 bcallah Exp $

We don't care about rebuilding when source files change since they
aren't going to change in this case (ports).  Clean up a bit wrt
samples/test so at least all of the targets work.

--- Makefile.orig	Tue Oct  8 22:39:24 2013
+++ Makefile	Fri Jan  2 14:31:43 2015
@@ -24,33 +24,25 @@ uninstall : .FORCE
 	rm -f $(BINDIR)/greg
 
 # bootstrap greg from greg.g
-greg.c : greg.g compile.c tree.c
-	$(MAKE) greg-new
-	./greg-new -o greg-new.c greg.g
-	$(CC) $(CFLAGS) -o greg-new greg-new.c $(SRCS)
-	cp greg-new.c greg.c
-	cp greg-new greg
+greg-new.c : greg greg.g
+	./greg -o greg-new.c greg.g
 
 # bootstrap: call make greg-new when you updated compile.c and greg-new.c
-greg-new : greg-new.c $(SRCS)
+greg-new : greg-new.c
 	$(CC) $(CFLAGS) -o greg-new greg-new.c $(SRCS)
 
 grammar : .FORCE
 	./greg -o greg.c greg.g
 
 clean : .FORCE
-	rm -rf *~ *.o *.greg.[cd] greg ${SAMPLES:.leg=.o} ${SAMPLES:.leg=} ${SAMPLES:.leg=.c} samples/*.dSYM testing1.c testing2.c *.dSYM selftest/
+	rm -rf *~ *.o *.greg.[cd] greg greg-new greg-new.c ${SAMPLES:.leg=.o} ${SAMPLES:.leg=} ${SAMPLES:.leg=.c} samples/*.dSYM testing1.c testing2.c *.dSYM selftest/
 
 spotless : clean .FORCE
 	rm -f greg
+	(cd samples; $(MAKE) $(MFLAGS) clean)
 
-samples/calc.c: samples/calc.leg greg
-	./greg -o $@ $<
-
-samples/calc: samples/calc.c
-	$(CC) $(CFLAGS) -o $@ $<
-
 samples: ${SAMPLES:.leg=} greg
+	(cd samples; $(MAKE) $(MFLAGS))
 
 %.c: %.leg
 	./greg $< > $@