| #!/usr/bin/env bash |
| |
| # Copyright 2017 The Fuchsia Authors |
| # |
| # Use of this source code is governed by a MIT-style |
| # license that can be found in the LICENSE file or at |
| # https://opensource.org/licenses/MIT |
| |
| set -eo pipefail |
| |
| usage() { |
| echo "usage: ${0} [options] {arm64, x64}" |
| echo |
| echo " -b [branch] Remote branch of zircon-guest linux repository to" |
| echo " pull before building (default: machina)." |
| echo " -d [defconfig] Linux config (default: machina_defconfig)." |
| echo " -l [linux-dir] Linux source dir." |
| echo " -o [image] Output location for the built kernel." |
| echo |
| exit 1 |
| } |
| |
| while getopts "b:d:l:o:" OPT; do |
| case $OPT in |
| b) LINUX_BRANCH="${OPTARG}";; |
| d) LINUX_DEFCONFIG="${OPTARG}";; |
| l) LINUX_DIR="${OPTARG}";; |
| o) LINUX_OUT="${OPTARG}";; |
| *) usage;; |
| esac |
| done |
| shift $((OPTIND - 1)) |
| |
| declare -r LINUX_DIR=${LINUX_DIR:-/tmp/linux} |
| declare -r LINUX_DEFCONFIG=${LINUX_DEFCONFIG:-machina_defconfig} |
| |
| declare -rx KBUILD_BUILD_USER="machina" |
| declare -rx KBUILD_BUILD_HOST="fuchsia.com" |
| |
| case "${1}" in |
| arm64) |
| type aarch64-linux-gnu-gcc || |
| { echo "Required package gcc-aarch64-linux-gnu is not installed." |
| echo "(sudo apt install gcc-aarch64-linux-gnu)"; exit 1; } |
| |
| declare -rx ARCH=arm64 |
| declare -x CROSS_COMPILE=aarch64-linux-gnu- |
| declare -r LINUX_IMAGE="${LINUX_DIR}/arch/arm64/boot/Image";; |
| x64) |
| declare -rx ARCH=x86_64 |
| declare -x CROSS_COMPILE=x86_64-linux-gnu- |
| declare -r LINUX_IMAGE="${LINUX_DIR}/arch/x86/boot/bzImage";; |
| *) |
| usage;; |
| esac |
| |
| if [ -n "${LINUX_BRANCH}" ]; then |
| # Shallow clone the repository. |
| if [ ! -d "${LINUX_DIR}/.git" ]; then |
| git clone --depth 1 --branch "${LINUX_BRANCH}" https://zircon-guest.googlesource.com/third_party/linux "${LINUX_DIR}" |
| fi |
| |
| # Update the repository. |
| pushd "${LINUX_DIR}" |
| if [[ `git branch --list ${LINUX_BRANCH} ` ]]; then |
| git checkout ${LINUX_BRANCH} |
| git pull --depth 1 origin ${LINUX_BRANCH} |
| else |
| git fetch --depth 1 origin ${LINUX_BRANCH}:${LINUX_BRANCH} |
| git checkout ${LINUX_BRANCH} |
| fi |
| popd |
| fi |
| |
| # Build Linux. |
| pushd "${LINUX_DIR}" |
| make "${LINUX_DEFCONFIG}" |
| make -j $(getconf _NPROCESSORS_ONLN) |
| popd |
| |
| if [ -n "${LINUX_OUT}" ]; then |
| mkdir -p $(dirname "${LINUX_OUT}") |
| mv "${LINUX_IMAGE}" "${LINUX_OUT}" |
| fi |