Merge pull request #4296 from The-OpenROAD-Project-staging/fix-gds-rebuild-check-klayout

Make check-klayout an order-only prereq of merged GDS

Author: maliberty

flow/Makefile

@@ -673,7 +673,7 @@ $(WRAPPED_GDSOAS): $(OBJECTS_DIR)/klayout_wrap.lyt $(WRAPPED_LEFS)
 
 # Merge GDS using Klayout
 #-------------------------------------------------------------------------------
-$(GDS_MERGED_FILE): check-klayout $(RESULTS_DIR)/6_final.def $(OBJECTS_DIR)/klayout.lyt $(GDSOAS_FILES) $(WRAPPED_GDSOAS) $(SEAL_GDSOAS)
+$(GDS_MERGED_FILE): $(RESULTS_DIR)/6_final.def $(OBJECTS_DIR)/klayout.lyt $(GDSOAS_FILES) $(WRAPPED_GDSOAS) $(SEAL_GDSOAS) | check-klayout
 	$(UNSET_AND_MAKE) do-gds-merged
 
 .PHONY: do-gds-merged