forked from github/verilator
111 lines
3.5 KiB
Makefile
111 lines
3.5 KiB
Makefile
######################################################################
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#
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# DESCRIPTION: Verilator CMake example usage
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#
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# This file shows usage of the CMake script.
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# This makefile is here for testing the examples and should
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# generally not be added to a CMake project.
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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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######################################################################
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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_COVERAGE = verilator_coverage
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else
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export VERILATOR_ROOT
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VERILATOR_COVERAGE = $(VERILATOR_ROOT)/bin/verilator_coverage
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endif
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######################################################################
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# Check if CMake is installed and of correct version
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ifeq ($(shell which cmake),)
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TARGET := nocmake
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else
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CMAKE_VERSION := $(shell cmake --version | grep -Po '(\d[\.\d]+)')
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CMAKE_MAJOR := $(shell echo $(CMAKE_VERSION) | cut -f1 -d.)
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CMAKE_MINOR := $(shell echo $(CMAKE_VERSION) | cut -f2 -d.)
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CMAKE_GT_3_8 := $(shell [ $(CMAKE_MAJOR) -gt 3 -o \( $(CMAKE_MAJOR) -eq 3 -a $(CMAKE_MINOR) -ge 8 \) ] && echo true)
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ifneq ($(CMAKE_GT_3_8),true)
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TARGET := oldcmake
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else
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# Check if SC exists via a verilator call (empty if not)
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SYSTEMC_EXISTS := $(shell $(VERILATOR) --get-supported SYSTEMC)
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# Test whether SystemC is installed with CMake support
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# This will print a CMake error about processing arguments that can (currently) be ignored.
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ifneq (,$(SYSTEMC_EXISTS))
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FINDSC := $(shell mkdir -p build && cd build && cmake --find-package -DNAME=SystemCLanguage -DCMAKE_USE_PTHREADS_INIT=ON -DCOMPILER_ID=GNU -DLANGUAGE=CXX -DMODE=EXIST -DThreads_FOUND=ON)
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ifneq (,$(findstring SystemCLanguage found,$(FINDSC)))
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SYSTEMC_SET := true
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endif
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endif
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ifeq ($(SYSTEMC_SET), true)
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TARGET := run
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else
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TARGET := nosc
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endif
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endif
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endif
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default: $(TARGET)
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run:
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@echo
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@echo "-- Verilator CMake SystemC hello-world simple example"
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@echo
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@echo "-- VERILATE ----------------"
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mkdir -p build && cd build && cmake ..
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@echo
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@echo "-- BUILD -------------------"
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cmake --build build -j
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@echo
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@echo "-- RUN ---------------------"
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@mkdir -p logs
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build/example
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@echo "-- DONE --------------------"
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@echo "Note: Once this example is understood, see examples/cmake_tracing_sc."
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@echo "Note: See also https://verilator.org/guide/latest/examples.html"
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clean mostlyclean distclean maintainer-clean:
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@rm -rf build logs
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nocmake:
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@echo
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@echo "%Skip: CMake has not been found"
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@echo
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oldcmake:
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@echo
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@echo "%Skip: CMake version is too old (need at least 3.8)"
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@echo
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nosc:
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@echo
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@echo "%Skip: CMake could not find SystemC."
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@echo "% Make sure that either:"
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@echo "% - The environment variables SYSTEMC_INCLUDE and SYSTEMC_LIBDIR are exported."
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@echo "% - Or, the environment variable SYSTEMC_ROOT is exported."
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@echo "% - Or, The environment variable SYSTEMC is exported."
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@echo "% - Or, if the SystemC installation provides CMake support,"
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@echo "% that its installation prefix is in CMAKE_PREFIX_PATH."
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@echo "% Also that the C++ standard of the SystemC library is the same as this example."
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@echo "% Please see the Verilator documentation's CMake section for more information."
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@echo
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