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-rw-r--r--Makefile3
1 files changed, 3 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 1c67c488..1311dab7 100644
--- a/Makefile
+++ b/Makefile
@@ -296,6 +296,9 @@ y.tab.c: $(top_srcdir)parser.y
false ; \
fi)
+%.shipped: $(top_srcdir)%
+ $(call SH,[ $^ -nt $@ ] && cp $^ $@)
+
else
%: $(top_srcdir)%.shipped