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+## ----------------------------------------------------------------------------
+## Script     : makefile
+## ----------------------------------------------------------------------------
+## Author     : Johann Faerber, Friedrich Beckmann
+## Company    : University of Applied Sciences Augsburg
+## ----------------------------------------------------------------------------
+## Description: This makefile allows automating design flow with Quartus,
+##              it is based on a design directory structure shown at 
+##              the end of this file.
+## ----------------------------------------------------------------------------
+
+###################################################################
+# Main Targets
+#
+###################################################################
+
+help:
+	@echo '"make" does intentionally nothing. Type:'
+	@echo '  "make qproject" to create quartus project only'
+	@echo '  "make compile" to synthesize the design'
+	@echo '  "make prog" to configure programmable device'
+	@echo '  "make quartus" to start quartus graphical user interface'
+	@echo '  "make clean" to remove all generated files'
+
+$(PROJECT).sdc:
+	# create a default timing constraint file assuming CLOCK_50
+	echo "create_clock -period 20.000 -name CLOCK_50 CLOCK_50" > $(PROJECT).sdc
+	echo "set_input_delay -clock CLOCK_50 2 [all_inputs]" >> $(PROJECT).sdc
+	echo "set_output_delay -clock CLOCK_50 2 [all_outputs]" >> $(PROJECT).sdc
+
+qproject: $(PROJECT).qpf
+
+$(PROJECT).qpf: $(SOURCE_FILES) ../../scripts/create_quartus_project_settings.tcl $(PROJECT)_pins.tcl $(PROJECT).sdc
+	# assign VHDL design files
+	rm -rf quartus_vhdl_source_files.tcl
+	for source_file in $(SOURCE_FILES); do \
+		echo set_global_assignment -name VHDL_FILE $$source_file >> quartus_vhdl_source_files.tcl; \
+	done
+	# just create a quartus project
+	quartus_sh -t ../../scripts/create_quartus_project_settings.tcl -projectname $(PROJECT)
+
+compile: flowsummary.log
+
+flowsummary.log: $(PROJECT).qpf ../../scripts/quartus_project_flow.tcl
+	quartus_sh -t ../../scripts/quartus_project_flow.tcl -projectname $(PROJECT) 
+
+prog: flowsummary.log
+	quartus_pgm -c USB-Blaster --mode jtag --operation="p;$(PROJECT).sof"
+
+quartus: $(PROJECT).qpf
+	# start	quartus gui
+	quartus $(PROJECT).qpf &
+
+clean:
+	rm -rf *~ *.rpt *.chg *.log quartus_vhdl_source_files.tcl *.htm *.eqn *.pin *.sof *.pof db incremental_db *.qpf *.qsf *.summary $(PROJECT).* 
+
+## ----------------------------------------------------------------------------
+## Description: 
+## ------------
+## assumes the following design directory structure as prerequisite
+## 
+## DigitaltechnikPraktikum
+## |   
+## +---src
+## |       and2gate_equation.vhd
+## |       invgate_equation.vhd
+## |       mux2to1_structure.vhd
+## |       or2gate_equation.vhd
+## |       t_mux2to1.vhd
+## |       de1_mux2to1_structure.vhd
+## |
+## +---sim
+## |   |   makefile
+## |   |
+## |   \---mux2to1
+## |           makefile
+## |           makefile.sources
+## |
+## +---pnr
+## |   |   makefile
+## |   |
+## |   \---de1_mux2to1
+## |           de1_mux2to1_pins.tcl
+## |           makefile
+## |
+## \---scripts
+##         de1_pin_assignments_minimumio.csv
+##         de1_pin_assignments_minimumio.tcl
+##         modelsim.ini
+##         quartus_project_settings.tcl
+## ----------------------------------------------------------------------------
+