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97 lines
2.9 KiB
Makefile
97 lines
2.9 KiB
Makefile
######################################################################
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#
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# DESCRIPTION: Verilator Example: Small Makefile
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#
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# This calls the object directory makefile. That allows the objects to
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# be placed in the "current directory" which simplifies the Makefile.
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#
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# Copyright 2003-2019 by Wilson Snyder. This program is free software; you can
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# redistribute it and/or modify it under the terms of either the GNU
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# Lesser General Public License Version 3 or the Perl Artistic License
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# Version 2.0.
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#
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######################################################################
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# Check for sanity to avoid later confusion
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ifneq ($(words $(CURDIR)),1)
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$(error Unsupported: GNU Make cannot build in directories containing spaces, build elsewhere: '$(CURDIR)')
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endif
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######################################################################
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# Set up variables
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# If $VERILATOR_ROOT isn't in the environment, we assume it is part of a
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# package inatall, and verilator is in your path. Otherwise find the
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# binary relative to $VERILATOR_ROOT (such as when inside the git sources).
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ifeq ($(VERILATOR_ROOT),)
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VERILATOR = verilator
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VERILATOR_COVERAGE = verilator_coverage
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else
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export VERILATOR_ROOT
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VERILATOR = $(VERILATOR_ROOT)/bin/verilator
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VERILATOR_COVERAGE = $(VERILATOR_ROOT)/bin/verilator_coverage
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endif
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VERILATOR_FLAGS =
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# Generate C++ in executable form
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VERILATOR_FLAGS += -cc --exe
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# Generate makefile dependencies (not shown as complicates the Makefile)
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#VERILATOR_FLAGS += -MMD
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# Optimize
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VERILATOR_FLAGS += -O2 -x-assign 0
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# Warn abount lint issues; may not want this on less solid designs
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VERILATOR_FLAGS += -Wall
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# Make waveforms
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VERILATOR_FLAGS += --trace
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# Check SystemVerilog assertions
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VERILATOR_FLAGS += --assert
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# Generate coverage analysis
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VERILATOR_FLAGS += --coverage
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# Run Verilator in debug mode
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#VERILATOR_FLAGS += --debug
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# Add this trace to get a backtrace in gdb
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#VERILATOR_FLAGS += --gdbbt
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######################################################################
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default: run
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run:
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@echo
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@echo "-- Verilator tracing example"
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@echo
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@echo "-- VERILATE ----------------"
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$(VERILATOR) $(VERILATOR_FLAGS) -f input.vc top.v sim_main.cpp
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@echo
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@echo "-- COMPILE -----------------"
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# To compile, we can either just do what Verilator asks,
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# or call a submakefile where we can override the rules ourselves
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# $(MAKE) -j 4 -C obj_dir -f Vtop.mk
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$(MAKE) -j 4 -C obj_dir -f ../Makefile_obj
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@echo
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@echo "-- RUN ---------------------"
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@mkdir -p logs
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obj_dir/Vtop +trace
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@echo
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@echo "-- COVERAGE ----------------"
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$(VERILATOR_COVERAGE) --annotate logs/annotated logs/coverage.dat
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@echo
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@echo "-- DONE --------------------"
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@echo "To see waveforms, open vlt_dump.vcd in a waveform viewer"
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@echo
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######################################################################
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# Other targets
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show-config:
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$(VERILATOR) -V
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maintainer-copy::
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clean mostlyclean distclean maintainer-clean::
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-rm -rf obj_dir logs *.log *.dmp *.vpd coverage.dat core
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