verilator/ci/build_verilator.sh
2020-03-21 11:24:24 -04:00

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#!/bin/bash
# DESCRIPTION: Verilator: Travis CI build script
#
# Copyright 2019 by Todd Strader. This program is free software; you
# can redistribute it and/or modify it under the terms of either the GNU
# Lesser General Public License Version 3 or the Perl Artistic License
# Version 2.0.
# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
#
# This script builds and caches the Verilator binaries for Travis CI
# (and possibly other CI platforms). The Verilator CI system uses this
# script, but other CI systems that depend on Verilator may also use
# the script.
# see: https://github.com/verilator/verilator_ext_tests/blob/master/.travis.yml
# To use this script, either checkout Verilator as part of the CI build
# process or add Verilator as a Git submodule. Verilator tarballs can
# not be used as the script relies on Git revisions for caching.
set -e
if [ -z "${VERILATOR_NUM_JOBS}" ]; then
VERILATOR_NUM_JOBS=$(nproc)
fi
# Caching would be simpler if we installed without VERILATOR_ROOT, but
# it's needed for driver.pl outside of the repo
if [ -z "${VERILATOR_ROOT}" ]; then
echo "VERILATOR_ROOT not set"
exit -1
fi
if [ -z "${VERILATOR_CACHE}" ]; then
echo "VERILATOR_CACHE not set"
exit -1
fi
VERILATOR_REV=$(cd "${VERILATOR_ROOT}" && git rev-parse HEAD)
echo "Found Verilator rev ${VERILATOR_REV}"
CACHED_REV_FILE=${VERILATOR_CACHE}/.rev.txt
if [[ ! -f "${CACHED_REV_FILE}" || \
$(< "${CACHED_REV_FILE}") != "${VERILATOR_REV}" ]]; then
echo "Building Verilator"
# Unsure why Travis monkies with the capitalization of the stage name, but it does
if [[ -n ${TRAVIS_BUILD_STAGE_NAME} && \
${TRAVIS_BUILD_STAGE_NAME} != "Build verilator" ]]; then
echo "WARNING: Building Verilator in Travis build stage other than \"Build verilator\": ${TRAVIS_BUILD_STAGE_NAME}"
fi
cd "${VERILATOR_ROOT}"
autoconf && ./configure ${VERILATOR_CONFIG_FLAGS} && make -j ${VERILATOR_NUM_JOBS}
# Copy the Verilator build artifacts
mkdir -p "${VERILATOR_CACHE}"
rm -rf ${VERILATOR_CACHE}/*
cp bin/*bin* "${VERILATOR_CACHE}"
# Remember the Git revision
echo "${VERILATOR_REV}" > "${CACHED_REV_FILE}"
else
echo "Using cached Verilator"
cd "${VERILATOR_ROOT}"
# Create include/verilated_config.h and maybe other things
autoconf && ./configure ${VERILATOR_CONFIG_FLAGS}
cp ${VERILATOR_CACHE}/* bin
fi