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#!/bin/bash
# Copyright 2014 Google Inc. 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.
# This script bootstraps building a Bazel binary without Bazel then
# use this compiled Bazel to bootstrap Bazel itself. It can also
# be provided with a previous version of Bazel to bootstrap Bazel
# itself.
# The resulting binary can be found at output/bazel.
set -o errexit
cd "$(dirname "$0")"
source scripts/bootstrap/buildenv.sh
function usage() {
[ -n "${1:-build}" ] && echo "Invalid command(s): $1" >&2
echo "syntax: $0 [command[,command]* [BAZEL_BIN [BAZEL_SUM]]]" >&2
echo " General purpose commands:" >&2
echo " build = compile,tools,init (default)" >&2
echo " compile = compile a Bazel binary for usage" >&2
echo " tools = compile and install tooling for Bazel" >&2
echo " init = initialize the base workspace" >&2
echo " Commands for developers:" >&2
echo " all = build,determinism,test" >&2
echo " determinism = test for stability of Bazel builds" >&2
echo " test = run the full test suite of Bazel" >&2
exit 1
}
function parse_options() {
local keywords="(build|compile|tools|init|all|determinism|bootstrap|test)"
COMMANDS="${1:-build}"
[[ "${COMMANDS}" =~ ^$keywords(,$keywords)*$ ]] || usage "$@"
DO_COMPILE=
DO_TOOLS_COMPILATION=
DO_CHECKSUM=
DO_FULL_CHECKSUM=1
DO_TESTS=
DO_BASE_WORKSPACE_INIT=
[[ "${COMMANDS}" =~ (compile|build|all) ]] && DO_COMPILE=1
[[ "${COMMANDS}" =~ (tools|build|all) ]] && DO_TOOLS_COMPILATION=1
[[ "${COMMANDS}" =~ (init|build|all) ]] && DO_BASE_WORKSPACE_INIT=1
[[ "${COMMANDS}" =~ (bootstrap|determinism|all) ]] && DO_CHECKSUM=1
[[ "${COMMANDS}" =~ (bootstrap) ]] && DO_FULL_CHECKSUM=
[[ "${COMMANDS}" =~ (test|all) ]] && DO_TESTS=1
BAZEL_BIN=${2:-"bazel-bin/src/bazel"}
BAZEL_SUM=${3:-"bazel-out/bazel_checksum"}
}
parse_options "${@}"
mkdir -p output
: ${BAZEL:=${2-}}
#
# Create an initial binary so we can host ourself
#
if [ ! -x "${BAZEL}" ]; then
display "$INFO You can skip this first step by providing a path to the bazel binary as second argument:"
display "$INFO $0 ${COMMANDS} /path/to/bazel"
new_step 'Building Bazel from scratch'
source scripts/bootstrap/compile.sh
cp ${OUTPUT_DIR}/bazel output/bazel
BAZEL=$(pwd)/output/bazel
fi
#
# Bootstrap bazel using the previous bazel binary = release binary
#
if [ -z "${EMBED_LABEL-}" ]; then
# Add a default label when unspecified
git_sha1=$(git_sha1)
EMBED_LABEL="head (@${git_sha1:-non-git})"
fi
source scripts/bootstrap/bootstrap.sh
if [ $DO_COMPILE ]; then
new_step 'Building Bazel with Bazel'
display "."
bazel_bootstrap //src:bazel output/bazel 0755 1
BAZEL=$(pwd)/output/bazel
fi
#
# Bootstrap tools using the release binary
#
if [ $DO_TOOLS_COMPILATION ]; then
new_step 'Building Bazel tools'
bazel_bootstrap //third_party/ijar:ijar tools/jdk/ijar 755
bazel_bootstrap //src/java_tools/singlejar:SingleJar_deploy.jar \
tools/jdk/SingleJar_deploy.jar
bazel_bootstrap //src/java_tools/buildjar:JavaBuilder_deploy.jar \
tools/jdk/JavaBuilder_deploy.jar
if [[ $PLATFORM == "darwin" ]]; then
bazel_bootstrap //src/tools/xcode-common/java/com/google/devtools/build/xcode/actoolzip:actoolzip_deploy.jar \
tools/objc/precomp_actoolzip_deploy.jar
bazel_bootstrap //src/tools/xcode-common/java/com/google/devtools/build/xcode/ibtoolzip:ibtoolzip_deploy.jar \
tools/objc/precomp_ibtoolzip_deploy.jar
bazel_bootstrap //src/objc_tools/momczip:momczip_deploy.jar \
tools/objc/precomp_momczip_deploy.jar
bazel_bootstrap //src/objc_tools/bundlemerge:bundlemerge_deploy.jar \
tools/objc/precomp_bundlemerge_deploy.jar
bazel_bootstrap //src/objc_tools/plmerge:plmerge_deploy.jar \
tools/objc/precomp_plmerge_deploy.jar
bazel_bootstrap //src/objc_tools/xcodegen:xcodegen_deploy.jar \
tools/objc/precomp_xcodegen_deploy.jar
fi
fi
#
# Output is deterministic between two bootstrapped bazel binary using the actual tools and the
# released binary.
#
if [ $DO_CHECKSUM ]; then
new_step "Determinism test"
BAZEL_SUM=${BAZEL_SUM:-bazel-out/bazel_checksum}
if [ ! -f ${BAZEL_SUM} ]; then
log "First build"
bootstrap_test ${BAZEL} ${BAZEL_SUM}
else
BOOTSTRAP=${BAZEL}
fi
if [ "${BAZEL_SUM}" != "${OUTPUT_DIR}/bazel_checksum" ]; then
cp ${BAZEL_SUM} ${OUTPUT_DIR}/bazel_checksum
fi
if [ $DO_FULL_CHECKSUM ]; then
log "Second build"
bootstrap_test ${BOOTSTRAP} bazel-out/bazel_checksum
log "Comparing output"
(diff -U 0 ${OUTPUT_DIR}/bazel_checksum bazel-out/bazel_checksum >&2) \
|| fail "Differences detected in outputs!"
fi
fi
#
# Tests
#
if [ $DO_TESTS ]; then
new_step "Running tests"
display "."
$BAZEL --blazerc=${BAZELRC} --nomaster_blazerc test \
--build_tests_only \
--javacopt="-source ${JAVA_VERSION} -target ${JAVA_VERSION}" \
-k --test_output=errors //src/... //third_party/ijar/... //scripts/... \
|| fail "Tests failed"
fi
#
# Setup the base workspace
#
if [ $DO_BASE_WORKSPACE_INIT ]; then
new_step 'Setting up base workspace'
display "."
source scripts/bootstrap/init_workspace.sh
fi
clear_log
display "Build successful! Binary is here: ${BAZEL}"
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