# vhdl files
FILES = src/*
VHDLEX = .vhd

# testbench
TESTBENCHPATH = testbench/${TESTBENCH}$(VHDLEX)

#GHDL CONFIG
GHDL_CMD = ghdl
GHDL_FLAGS  = --ieee=synopsys --warn-no-vital-generic

SIMDIR = simulation
# Simulation break condition
#GHDL_SIM_OPT = --assert-level=error
GHDL_SIM_OPT = --stop-time=10000ms

WAVEFORM_VIEWER = gtkwave

all: compile run view

new :
	echo "Setting up project ${PROJECT}"
	mkdir src testbench simulation

compile :
ifeq ($(strip $(TESTBENCH)),)
		@echo "TESTBENCH not set. Use TESTBENCH=value to set it."
		@exit 2
endif

	mkdir -p simulation
	$(GHDL_CMD) -i $(GHDL_FLAGS) --workdir=simulation --work=work $(TESTBENCHPATH) $(FILES)
	$(GHDL_CMD) -m  $(GHDL_FLAGS) --workdir=simulation --work=work $(TESTBENCH)
	@mv $(TESTBENCH) simulation/$(TESTBENCH)

run :
	@$(SIMDIR)/$(TESTBENCH) $(GHDL_SIM_OPT) --vcdgz=$(SIMDIR)/$(TESTBENCH).vcdgz

view :
	gunzip --stdout $(SIMDIR)/$(TESTBENCH).vcdgz | $(WAVEFORM_VIEWER) --vcd

clean :
	$(GHDL_CMD) --clean --workdir=simulation