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97 lines
3.4 KiB
Makefile
97 lines
3.4 KiB
Makefile
######################################################################
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#
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# DESCRIPTION: Verilator Example: --protect-lib Makefile
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#
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# This calls the object directory makefiles. 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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# This file ONLY is placed under the Creative Commons Public Domain, for
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# any use, without warranty, 2020 by Wilson Snyder.
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# SPDX-License-Identifier: CC0-1.0
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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 install, 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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else
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export VERILATOR_ROOT
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VERILATOR = $(VERILATOR_ROOT)/bin/verilator
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endif
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VERILATOR_FLAGS =
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# Generate C++
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VERILATOR_FLAGS += -cc
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# Optimize
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VERILATOR_FLAGS += -Os -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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TOP_VERILATOR_FLAGS = $(VERILATOR_FLAGS) --trace
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######################################################################
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default: run
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run:
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@echo
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@echo "-- Verilator --protect-lib example -_--------------------------"
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@echo
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@echo "-- VERILATE secret module -------------------------------------"
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@echo " --protect-lib will produce both a static and shared library"
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@echo " In this example the static library is used, but some"
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@echo " simulators may require the shared library."
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@echo "---------------------------------------------------------------"
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$(VERILATOR) $(VERILATOR_FLAGS) --protect-lib verilated_secret -Mdir obj_dir_secret/ secret_impl.v
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@echo
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@echo "-- COMPILE protected library ----------------------------------"
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@echo " This builds verilated_secret.sv, libverilated_secret.a and"
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@echo " libverilated_secret.so which can be distributed apart from"
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@echo " the source"
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@echo "---------------------------------------------------------------"
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$(MAKE) -j 4 -C obj_dir_secret -f Vsecret_impl.mk
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@echo
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@echo "-- VERILATE top module ----------------------------------------"
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@echo " Use the SystemVerilog wrapper (verilated_secret.sv) and the"
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@echo " library (libverilated_secret.a) generated from the previous"
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@echo " step"
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@echo "---------------------------------------------------------------"
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$(VERILATOR) $(TOP_VERILATOR_FLAGS) --exe -LDFLAGS '../obj_dir_secret/libverilated_secret.a' top.v obj_dir_secret/verilated_secret.sv sim_main.cpp
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@echo
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@echo "-- COMPILE entire design --------------------------------------"
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$(MAKE) -j 4 -C obj_dir -f Vtop.mk
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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 "-- DONE -------------------------------------------------------"
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@echo "To see waveforms, open logs/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 core
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