makefile: create required output directories for do-floorplan/place/route/finish

Bazel use-case: support executing these stages using only the
artifacts from the previous stage and do not rely on any
side effects, such as having creating log folders.

Signed-off-by: Øyvind Harboe <[email protected]>

Author: oharboe

flow/Makefile

@@ -598,6 +598,7 @@ $(RESULTS_DIR)/2_floorplan.sdc: $(RESULTS_DIR)/2_1_floorplan.odb
 
 .PHONY: do-floorplan
 do-floorplan:
+	mkdir -p $(RESULTS_DIR) $(LOG_DIR) $(REPORTS_DIR)
 	$(UNSET_AND_MAKE) do-2_1_floorplan do-2_2_floorplan_io do-2_3_floorplan_tdms do-2_4_floorplan_macro do-2_5_floorplan_tapcell do-2_6_floorplan_pdn do-2_floorplan
 
 .PHONY: clean_floorplan
@@ -651,6 +652,7 @@ $(eval $(call do-copy,3_place,2_floorplan.sdc,,.sdc))
 
 .PHONY: do-place
 do-place:
+	mkdir -p $(RESULTS_DIR) $(LOG_DIR) $(REPORTS_DIR)
 	$(UNSET_AND_MAKE) do-3_1_place_gp_skip_io do-3_2_place_iop do-3_3_place_gp do-3_4_place_resized do-3_5_place_dp do-3_place do-3_place.sdc
 
 # Clean Targets
@@ -730,6 +732,7 @@ $(eval $(call do-copy,5_route,4_cts.sdc,,.sdc))
 
 .PHONY: do-route
 do-route:
+	mkdir -p $(RESULTS_DIR) $(LOG_DIR) $(REPORTS_DIR)
 	$(UNSET_AND_MAKE) do-5_1_grt do-5_2_route do-5_route do-5_route.sdc
 
 $(RESULTS_DIR)/5_route.v:
@@ -799,6 +802,7 @@ $(RESULTS_DIR)/6_final.def: $(LOG_DIR)/6_report.log
 
 .PHONY: do-finish
 do-finish:
+	mkdir -p $(RESULTS_DIR) $(LOG_DIR) $(REPORTS_DIR)
 	$(UNSET_AND_MAKE) do-6_1_fill do-6_1_fill.sdc do-6_final.sdc do-6_report do-gds elapsed
 
 .PHONY: skip_place