Merge pull request #1730 from Pinata-Consulting/makefile-refactor-for-future-commits

makefile: break out phony target with synthesis dependencies

Author: maliberty

flow/Makefile

@@ -479,8 +479,11 @@ $(SDC_FILE_CLOCK_PERIOD): $(SDC_FILE)
 	mkdir -p $(dir $@)
 	echo $(ABC_CLOCK_PERIOD_IN_PS) > $@
 
+.PHONY: yosys-dependencies
+yosys-dependencies: $(DONT_USE_LIBS) $(WRAPPED_LIBS) $(DONT_USE_SC_LIB) $(DFF_LIB_FILE) $(VERILOG_FILES) $(CACHED_NETLIST) $(LATCH_MAP_FILE) $(ADDER_MAP_FILE)
+
 .PHONY: do-yosys
-do-yosys: $(DONT_USE_LIBS) $(WRAPPED_LIBS) $(DONT_USE_SC_LIB) $(DFF_LIB_FILE) $(VERILOG_FILES) $(CACHED_NETLIST) $(LATCH_MAP_FILE) $(ADDER_MAP_FILE)
+do-yosys: yosys-dependencies
 	mkdir -p $(RESULTS_DIR) $(LOG_DIR) $(REPORTS_DIR)
 	($(TIME_CMD) $(YOSYS_CMD) $(YOSYS_FLAGS) -c $(SYNTH_SCRIPT)) 2>&1 | tee $(LOG_DIR)/1_1_yosys.log