rules.mk: make sure we always create a .depend file
There are some cases where "make depend" would always run when
entering a directory. This happened when both the $(SRCS) and
$(HOSTSRCS) lists were empty (which is for example typical for the
examples/api/ directory). Avoid this by making sure that a ".depend"
file gets always created, even if empty.
Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
diff --git a/rules.mk b/rules.mk
index c1670ac..c2860e5 100644
--- a/rules.mk
+++ b/rules.mk
@@ -27,6 +27,7 @@
$(obj).depend: $(src)Makefile $(TOPDIR)/config.mk $(SRCS) $(HOSTSRCS)
@rm -f $@
+ @touch $@
@for f in $(SRCS); do \
g=`basename $$f | sed -e 's/\(.*\)\.\w/\1.o/'`; \
$(CC) -M $(CPPFLAGS) -MQ $(obj)$$g $$f >> $@ ; \
