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Switch to using the mill bootstrap script (#134)
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‎.github/workflows/test.yml‎

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@@ -27,9 +27,6 @@ jobs:
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with:
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jvm: adopt:11
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apps: sbt
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- name: Setup Mill
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run: |
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curl -L https://github.com/com-lihaoyi/mill/releases/download/0.12.5/0.12.5 > mill && chmod +x mill
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- name: Setup Dependencies
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run: |
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sudo apt-get install ccache

‎README.md‎

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@@ -15,8 +15,10 @@ We recommend using Java 11 or later LTS releases. While Chisel itself works with
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#### SBT or mill
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SBT is the most common build tool in the Scala community. You can download it [here](https://www.scala-sbt.org/download.html).
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mill is another Scala/Java build tool without obscure DSL like SBT. You can download it [here](https://github.com/com-lihaoyi/mill/releases)
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SBT is the most common build tool in the Scala community. You can download it [here](https://www.scala-sbt.org/download.html).
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Mill is another Scala/Java build tool preferred by Chisel's developers.
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This repository includes a bootstrap script `./mill` so that no installation is necessary.
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You can read more about Mill on its website: https://mill-build.org.
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#### Verilator
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Alternatively, if you use Mill:
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```sh
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mill %NAME%.test
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./mill %NAME%.test
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```
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You should see a whole bunch of output that ends with something like the following lines

‎mill‎

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#!/usr/bin/env sh
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# This is a wrapper script, that automatically download mill from GitHub release pages
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# You can give the required mill version with --mill-version parameter
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# If no version is given, it falls back to the value of DEFAULT_MILL_VERSION
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#
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# Original Project page: https://github.com/lefou/millw
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# Script Version: 0.4.12
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#
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# If you want to improve this script, please also contribute your changes back!
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#
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# Licensed under the Apache License, Version 2.0
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set -e
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if [ -z "${DEFAULT_MILL_VERSION}" ] ; then
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DEFAULT_MILL_VERSION=0.12.5
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fi
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if [ -z "${GITHUB_RELEASE_CDN}" ] ; then
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GITHUB_RELEASE_CDN=""
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fi
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MILL_REPO_URL="https://github.com/com-lihaoyi/mill"
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if [ -z "${CURL_CMD}" ] ; then
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CURL_CMD=curl
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fi
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# Explicit commandline argument takes precedence over all other methods
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if [ "$1" = "--mill-version" ] ; then
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shift
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if [ "x$1" != "x" ] ; then
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MILL_VERSION="$1"
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shift
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else
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echo "You specified --mill-version without a version." 1>&2
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echo "Please provide a version that matches one provided on" 1>&2
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echo "${MILL_REPO_URL}/releases" 1>&2
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false
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fi
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fi
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# Please note, that if a MILL_VERSION is already set in the environment,
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# We reuse it's value and skip searching for a value.
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# If not already set, read .mill-version file
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if [ -z "${MILL_VERSION}" ] ; then
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if [ -f ".mill-version" ] ; then
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MILL_VERSION="$(tr '\r' '\n' < .mill-version | head -n 1 2> /dev/null)"
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elif [ -f ".config/mill-version" ] ; then
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MILL_VERSION="$(tr '\r' '\n' < .config/mill-version | head -n 1 2> /dev/null)"
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fi
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fi
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MILL_USER_CACHE_DIR="${XDG_CACHE_HOME:-${HOME}/.cache}/mill"
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if [ -z "${MILL_DOWNLOAD_PATH}" ] ; then
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MILL_DOWNLOAD_PATH="${MILL_USER_CACHE_DIR}/download"
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fi
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# If not already set, try to fetch newest from Github
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if [ -z "${MILL_VERSION}" ] ; then
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# TODO: try to load latest version from release page
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echo "No mill version specified." 1>&2
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echo "You should provide a version via '.mill-version' file or --mill-version option." 1>&2
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mkdir -p "${MILL_DOWNLOAD_PATH}"
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LANG=C touch -d '1 hour ago' "${MILL_DOWNLOAD_PATH}/.expire_latest" 2>/dev/null || (
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# we might be on OSX or BSD which don't have -d option for touch
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# but probably a -A [-][[hh]mm]SS
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touch "${MILL_DOWNLOAD_PATH}/.expire_latest"; touch -A -010000 "${MILL_DOWNLOAD_PATH}/.expire_latest"
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) || (
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# in case we still failed, we retry the first touch command with the intention
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# to show the (previously suppressed) error message
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LANG=C touch -d '1 hour ago' "${MILL_DOWNLOAD_PATH}/.expire_latest"
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)
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# POSIX shell variant of bash's -nt operator, see https://unix.stackexchange.com/a/449744/6993
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# if [ "${MILL_DOWNLOAD_PATH}/.latest" -nt "${MILL_DOWNLOAD_PATH}/.expire_latest" ] ; then
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if [ -n "$(find -L "${MILL_DOWNLOAD_PATH}/.latest" -prune -newer "${MILL_DOWNLOAD_PATH}/.expire_latest")" ]; then
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# we know a current latest version
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MILL_VERSION=$(head -n 1 "${MILL_DOWNLOAD_PATH}"/.latest 2> /dev/null)
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fi
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if [ -z "${MILL_VERSION}" ] ; then
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# we don't know a current latest version
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echo "Retrieving latest mill version ..." 1>&2
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LANG=C ${CURL_CMD} -s -i -f -I ${MILL_REPO_URL}/releases/latest 2> /dev/null | grep --ignore-case Location: | sed s'/^.*tag\///' | tr -d '\r\n' > "${MILL_DOWNLOAD_PATH}/.latest"
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MILL_VERSION=$(head -n 1 "${MILL_DOWNLOAD_PATH}"/.latest 2> /dev/null)
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fi
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if [ -z "${MILL_VERSION}" ] ; then
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# Last resort
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MILL_VERSION="${DEFAULT_MILL_VERSION}"
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echo "Falling back to hardcoded mill version ${MILL_VERSION}" 1>&2
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else
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echo "Using mill version ${MILL_VERSION}" 1>&2
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fi
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fi
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MILL="${MILL_DOWNLOAD_PATH}/${MILL_VERSION}"
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try_to_use_system_mill() {
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if [ "$(uname)" != "Linux" ]; then
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return 0
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fi
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MILL_IN_PATH="$(command -v mill || true)"
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if [ -z "${MILL_IN_PATH}" ]; then
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return 0
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fi
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SYSTEM_MILL_FIRST_TWO_BYTES=$(head --bytes=2 "${MILL_IN_PATH}")
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if [ "${SYSTEM_MILL_FIRST_TWO_BYTES}" = "#!" ]; then
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# MILL_IN_PATH is (very likely) a shell script and not the mill
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# executable, ignore it.
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return 0
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fi
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SYSTEM_MILL_PATH=$(readlink -e "${MILL_IN_PATH}")
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SYSTEM_MILL_SIZE=$(stat --format=%s "${SYSTEM_MILL_PATH}")
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SYSTEM_MILL_MTIME=$(stat --format=%y "${SYSTEM_MILL_PATH}")
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if [ ! -d "${MILL_USER_CACHE_DIR}" ]; then
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mkdir -p "${MILL_USER_CACHE_DIR}"
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fi
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SYSTEM_MILL_INFO_FILE="${MILL_USER_CACHE_DIR}/system-mill-info"
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if [ -f "${SYSTEM_MILL_INFO_FILE}" ]; then
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parseSystemMillInfo() {
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LINE_NUMBER="${1}"
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# Select the line number of the SYSTEM_MILL_INFO_FILE, cut the
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# variable definition in that line in two halves and return
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# the value, and finally remove the quotes.
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sed -n "${LINE_NUMBER}p" "${SYSTEM_MILL_INFO_FILE}" |\
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cut -d= -f2 |\
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sed 's/"\(.*\)"/\1/'
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}
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CACHED_SYSTEM_MILL_PATH=$(parseSystemMillInfo 1)
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CACHED_SYSTEM_MILL_VERSION=$(parseSystemMillInfo 2)
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CACHED_SYSTEM_MILL_SIZE=$(parseSystemMillInfo 3)
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CACHED_SYSTEM_MILL_MTIME=$(parseSystemMillInfo 4)
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if [ "${SYSTEM_MILL_PATH}" = "${CACHED_SYSTEM_MILL_PATH}" ] \
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&& [ "${SYSTEM_MILL_SIZE}" = "${CACHED_SYSTEM_MILL_SIZE}" ] \
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&& [ "${SYSTEM_MILL_MTIME}" = "${CACHED_SYSTEM_MILL_MTIME}" ]; then
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if [ "${CACHED_SYSTEM_MILL_VERSION}" = "${MILL_VERSION}" ]; then
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MILL="${SYSTEM_MILL_PATH}"
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return 0
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else
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return 0
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fi
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fi
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fi
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SYSTEM_MILL_VERSION=$(${SYSTEM_MILL_PATH} --version | head -n1 | sed -n 's/^Mill.*version \(.*\)/\1/p')
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cat <<EOF > "${SYSTEM_MILL_INFO_FILE}"
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CACHED_SYSTEM_MILL_PATH="${SYSTEM_MILL_PATH}"
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CACHED_SYSTEM_MILL_VERSION="${SYSTEM_MILL_VERSION}"
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CACHED_SYSTEM_MILL_SIZE="${SYSTEM_MILL_SIZE}"
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CACHED_SYSTEM_MILL_MTIME="${SYSTEM_MILL_MTIME}"
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EOF
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if [ "${SYSTEM_MILL_VERSION}" = "${MILL_VERSION}" ]; then
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MILL="${SYSTEM_MILL_PATH}"
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fi
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}
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try_to_use_system_mill
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# If not already downloaded, download it
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if [ ! -s "${MILL}" ] ; then
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# support old non-XDG download dir
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MILL_OLD_DOWNLOAD_PATH="${HOME}/.mill/download"
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OLD_MILL="${MILL_OLD_DOWNLOAD_PATH}/${MILL_VERSION}"
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if [ -x "${OLD_MILL}" ] ; then
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MILL="${OLD_MILL}"
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else
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case $MILL_VERSION in
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0.0.* | 0.1.* | 0.2.* | 0.3.* | 0.4.* )
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DOWNLOAD_SUFFIX=""
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DOWNLOAD_FROM_MAVEN=0
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;;
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0.5.* | 0.6.* | 0.7.* | 0.8.* | 0.9.* | 0.10.* | 0.11.0-M* )
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DOWNLOAD_SUFFIX="-assembly"
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DOWNLOAD_FROM_MAVEN=0
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;;
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*)
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DOWNLOAD_SUFFIX="-assembly"
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DOWNLOAD_FROM_MAVEN=1
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;;
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esac
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DOWNLOAD_FILE=$(mktemp mill.XXXXXX)
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if [ "$DOWNLOAD_FROM_MAVEN" = "1" ] ; then
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DOWNLOAD_URL="https://repo1.maven.org/maven2/com/lihaoyi/mill-dist/${MILL_VERSION}/mill-dist-${MILL_VERSION}.jar"
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else
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MILL_VERSION_TAG=$(echo "$MILL_VERSION" | sed -E 's/([^-]+)(-M[0-9]+)?(-.*)?/\1\2/')
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DOWNLOAD_URL="${GITHUB_RELEASE_CDN}${MILL_REPO_URL}/releases/download/${MILL_VERSION_TAG}/${MILL_VERSION}${DOWNLOAD_SUFFIX}"
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unset MILL_VERSION_TAG
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fi
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# TODO: handle command not found
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echo "Downloading mill ${MILL_VERSION} from ${DOWNLOAD_URL} ..." 1>&2
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${CURL_CMD} -f -L -o "${DOWNLOAD_FILE}" "${DOWNLOAD_URL}"
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chmod +x "${DOWNLOAD_FILE}"
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mkdir -p "${MILL_DOWNLOAD_PATH}"
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mv "${DOWNLOAD_FILE}" "${MILL}"
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unset DOWNLOAD_FILE
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unset DOWNLOAD_SUFFIX
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fi
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fi
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if [ -z "$MILL_MAIN_CLI" ] ; then
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MILL_MAIN_CLI="${0}"
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fi
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MILL_FIRST_ARG=""
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if [ "$1" = "--bsp" ] || [ "$1" = "-i" ] || [ "$1" = "--interactive" ] || [ "$1" = "--no-server" ] || [ "$1" = "--repl" ] || [ "$1" = "--help" ] ; then
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# Need to preserve the first position of those listed options
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MILL_FIRST_ARG=$1
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shift
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fi
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unset MILL_DOWNLOAD_PATH
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unset MILL_OLD_DOWNLOAD_PATH
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unset OLD_MILL
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unset MILL_VERSION
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unset MILL_REPO_URL
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# We don't quote MILL_FIRST_ARG on purpose, so we can expand the empty value without quotes
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# shellcheck disable=SC2086
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exec "${MILL}" $MILL_FIRST_ARG -D "mill.main.cli=${MILL_MAIN_CLI}" "$@"

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