Add dep tracking for local compile rule

modules/libreg/standalone/Makefile.in

@@ -49,6 +49,7 @@ DEFINES += -DSTANDALONE_REGISTRY
 # Make sure that these custom rules stay in sync with rules.mk
 S_%.$(OBJ_SUFFIX): $(srcdir)/../src/%.c
 	$(REPORT_BUILD)
+	@$(MAKE_DEPS)
 ifeq ($(MOZ_OS2_TOOLS), VACPP)
 	$(ELOG) $(CC) -Fo$@ -c $(COMPILE_CFLAGS) $<
 else