external: delete output of built, Make.dep at distclean

The Make.dep is an output of built so that it should be clean when
we execute "make distclean".

diff --git a/external/Makefile b/external/Makefile
index 1bf5156..5ae4ec4 100644 (file)
--- a/external/Makefile
+++ b/external/Makefile
@@ -132,6 +132,7 @@ clean: $(foreach SDIR, $(BUILDIRS), $(SDIR)_clean) iotivity_clean
 
 distclean: $(foreach SDIR, $(BUILDIRS), $(SDIR)_distclean)
        $(call DELFILE, .depend)
+       $(call DELFILE, Make.dep)
        $(call DELFILE, $(BIN))
        $(call CLEAN)