From 5850d041b6d8b55ffb85f0b8ce555a91597ab131 Mon Sep 17 00:00:00 2001
From: John Wiegley <johnw@newartisans.com>
Date: Fri, 5 Mar 2010 22:08:51 -0500
Subject: [PATCH] Improved Makefile rule for generating system.hh.gch

---
 tools/Makefile.am | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/Makefile.am b/tools/Makefile.am
index 09daafe6..53caf565 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -167,6 +167,7 @@ BUILT_SOURCES += system.hh.gch
 CLEANFILES    += system.hh.gch
 
 system.hh.gch: system.hh
+	-rm -f $@
 	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
 	    $(lib_cppflags) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) \
 	    -o $@ $<