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#!/bin/bash
# Copyright 2015 The Bazel Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# General purpose method and values for bootstrapping bazel.
set -o errexit
DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
WORKSPACE_DIR="$(dirname $(dirname ${DIR}))"
JAVA_VERSION=${JAVA_VERSION:-1.8}
BAZELRC=${BAZELRC:-"/dev/null"}
PLATFORM="$(uname -s | tr 'A-Z' 'a-z')"
MACHINE_TYPE="$(uname -m)"
MACHINE_IS_64BIT='no'
if [ "${MACHINE_TYPE}" = 'amd64' -o "${MACHINE_TYPE}" = 'x86_64' ]; then
MACHINE_IS_64BIT='yes'
fi
MACHINE_IS_ARM='no'
if [ "${MACHINE_TYPE}" = 'arm' -o "${MACHINE_TYPE}" = 'armv7l' -o "${MACHINE_TYPE}" = 'aarch64' ]; then
MACHINE_IS_ARM='yes'
fi
# Extension for executables.
EXE_EXT=""
case "${PLATFORM}" in
msys*|mingw*)
EXE_EXT=".exe"
esac
# Whether we display build messages or not. We set this conditionally because
# the file including us or the user may already have defined VERBOSE to their
# liking.
: ${VERBOSE:=yes}
# List of functions to invoke on exit.
ATEXIT_HANDLERS=
# Registers a function to be invoked on exit.
#
# The handlers will be invoked at exit time in the order they were registered.
# See comments in run_atexit for more details.
function atexit() {
local handler="${1}"; shift
[ -n "${ATEXIT_HANDLERS}" ] || trap 'run_atexit_handlers $?' EXIT
ATEXIT_HANDLERS="${ATEXIT_HANDLERS} ${handler}"
}
# Exit routine to run all registered atexit handlers.
#
# If the program exited with an error, this exit routine will also exit with the
# same error. However, if the program exited successfully, this exit routine
# will only exit successfully if the atexit handlers succeed.
function run_atexit_handlers() {
local exit_code="$?"
local failed=no
for handler in ${ATEXIT_HANDLERS}; do
eval "${handler}" || failed=yes
done
trap - EXIT # Reset exit handler to prevent double execution.
if [ ${exit_code} -ne 0 ]; then
exit ${exit_code}
else
if [ "${failed}" = yes ]; then
echo "Program tried to exit successfully but atexit routines failed" 1>&2
exit 1
else
exit 0
fi
fi
}
function tempdir() {
local tmp=${TMPDIR:-/tmp}
local DIR="$(mktemp -d ${tmp%%/}/bazel.XXXXXXXX)"
mkdir -p "${DIR}"
eval "cleanup_tempdir() { rm -rf '${DIR}'; }"
atexit cleanup_tempdir
NEW_TMPDIR="${DIR}"
}
tempdir
OUTPUT_DIR=${NEW_TMPDIR}
errfile=${OUTPUT_DIR}/errors
eval "cleanup_errfile() {
if [ -f '${errfile}' ]; then
cat '${errfile}' 1>&2;
fi;
}"
atexit cleanup_errfile
phasefile=${OUTPUT_DIR}/phase
eval "cleanup_phasefile() {
if [ -f '${phasefile}' ]; then
echo 1>&2;
cat '${phasefile}' 1>&2;
fi;
}"
atexit cleanup_phasefile
# Excutes a command respecting the current verbosity settings.
#
# If VERBOSE is yes, the command itself and its output are printed.
# If VERBOSE is no, the command's output is only displayed in case of failure.
#
# Exits the script if the command fails.
function run() {
if [ "${VERBOSE}" = yes ]; then
echo "${@}"
"${@}" || exit $?
else
echo "${@}" >"${errfile}"
# The exit here is needed because "set -e" on the shell does not cause
# errors in functions to exit in all cases. We should probably disable
# "set -e" altogether and add explicit error handling where necessary.
"${@}" >>"${errfile}" 2>&1 || exit $?
rm "${errfile}"
fi
}
function fail() {
local exitCode=$?
if [[ "$exitCode" = "0" ]]; then
exitCode=1
fi
echo >&2
echo "$1" >&2
exit $exitCode
}
function display() {
if [[ -z "${QUIETMODE}" ]]; then
echo -e "$@" >&2
fi
}
function log() {
echo -n "." >&2
echo "$1" >${phasefile}
}
function clear_log() {
echo >&2
rm -f ${phasefile}
}
LEAVES="\xF0\x9F\x8D\x83"
INFO="\033[32mINFO\033[0m:"
WARNING="\033[31mWARN\033[0m:"
first_step=1
function new_step() {
rm -f ${phasefile}
local new_line=
if [ -n "${first_step}" ]; then
first_step=
else
new_line="\n"
fi
display -n "$new_line$LEAVES $1"
}
function git_sha1() {
if [ -x "$(which git || true)" ] && [ -d .git ]; then
git rev-parse --short HEAD 2>/dev/null || true
fi
}
function git_date() {
if [ -x "$(which git || true)" ] && [ -d .git ]; then
git log -1 --pretty=%ai | cut -d " " -f 1 || true
fi
}
# Get the latest release version and append the date of
# the last commit if any.
function get_last_version() {
local version="$(fgrep -m 1 '## Release' CHANGELOG.md \
| sed -E 's|.*Release (.*) \(.*\)|\1|')"
local date="$(git_date)"
if [ -z "${version-}" ]; then
version="unknown"
fi
if [ -n "${date-}" ]; then
date="$(date +%Y-%m-%d)"
fi
echo "${version}-${date}"
}
if [[ ${PLATFORM} == "darwin" ]]; then
function md5_file() {
echo $(cat $1 | md5) $1
}
else
function md5_file() {
md5sum $1
}
fi
# Gets the java version from JAVA_HOME
# Sets JAVAC and JAVAC_VERSION with respectively the path to javac and
# the version of javac.
function get_java_version() {
test -z "$JAVA_HOME" && fail "JDK not found, please set \$JAVA_HOME."
JAVAC="${JAVA_HOME}/bin/javac"
[[ -x "${JAVAC}" ]] \
|| fail "JAVA_HOME ($JAVA_HOME) is not a path to a working JDK."
JAVAC_VERSION=$("${JAVAC}" -version 2>&1)
if [[ "$JAVAC_VERSION" =~ ^"javac "(1\.([789]|[1-9][0-9])).*$ ]]; then
JAVAC_VERSION=${BASH_REMATCH[1]}
else
fail "Cannot determine JDK version, please set \$JAVA_HOME."
fi
}
# Return the target that a bind point to, using Bazel query.
function get_bind_target() {
$BAZEL --bazelrc=${BAZELRC} --nomaster_bazelrc \
query "deps($1, 1) - $1"
}
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