From e19df24ea8f88e8795f139267a675035c11bbd90 Mon Sep 17 00:00:00 2001
From: Kaz Kylheku <kaz@kylheku.com>
Date: Sun, 2 Mar 2014 23:38:39 -0800
Subject: * Makefile (lex.yy.c): Remove lex.yy.c before trying to regenerate
 it. (y.tab.c, y.tab.h): Remove y.tab.c before running yacc. Write-protect
 y.tab.c, not $@, which could expand to the y.tab.h target if that is what
 triggered the rule.

---
 Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 10871021..628bb5e8 100644
--- a/Makefile
+++ b/Makefile
@@ -61,11 +61,13 @@ VPATH := $(top_srcdir)
 -include $(top_srcdir)/dep.mk
 
 lex.yy.c: parser.l
+	rm -f $@
 	$(LEX) $(LEX_DBG_FLAGS) $<
 	chmod a-w $@
 
 y.tab.c y.tab.h: parser.y
-	if $(YACC) -v -d $< ; then chmod a-w $@ ; true ; else rm $@ ; false ; fi
+	rm -f y.tab.c
+	if $(YACC) -v -d $< ; then chmod a-w y.tab.c ; true ; else rm y.tab.c ; false ; fi
 
 # Suppress useless sccs id array and unused label warning in byacc otuput.
 # Bison-generated parser also tests for this lint define.
-- 
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