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#!/bin/bash
# Copyright 2014 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.
# 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")"
# Set the default verbose mode in buildenv.sh so that we do not display command
# output unless there is a failure. We do this conditionally to offer the user
# a chance of overriding this in case they want to do so.
: ${VERBOSE:=no}
source scripts/bootstrap/buildenv.sh
mkdir -p output/usr/share/bazel
mkdir -p output/usr/bin
mkdir -p output/etc/bazel
: ${BAZEL:=}
#
# Create an initial binary so we can host ourself
#
if [ ! -x "${BAZEL}" ]; then
new_step 'Building Bazel from scratch'
source scripts/bootstrap/compile.sh
fi
#
# Bootstrap bazel using the previous bazel binary = release binary
#
if [ "${EMBED_LABEL-x}" = "x" ]; then
# Add a default label when unspecified
git_sha1=$(git_sha1)
EMBED_LABEL="$(get_last_version) (@${git_sha1:-non-git})"
fi
if [[ $PLATFORM == "darwin" ]] && \
xcodebuild -showsdks 2> /dev/null | grep -q '\-sdk iphonesimulator'; then
EXTRA_BAZEL_ARGS="${EXTRA_BAZEL_ARGS-} --define IPHONE_SDK=1"
fi
source scripts/bootstrap/bootstrap.sh
new_step 'Building Bazel with Bazel'
display "."
log "Building output/bazel"
# We set host and target platform directly because we are building for the local
# host.
bazel_build "src:bazel_nojdk${EXE_EXT}" \
--action_env=PATH \
--host_platform=@local_config_platform//:host \
--platforms=@local_config_platform//:host \
|| fail "Could not build Bazel"
bazel_bin_path="$(get_bazel_bin_path)/src/bazel_nojdk${EXE_EXT}"
[ -e "$bazel_bin_path" ] \
|| fail "Could not find freshly built Bazel binary at '$bazel_bin_path'"
cp -f "$bazel_bin_path" "output/usr/bin/bazel-4" \
|| fail "Could not copy '$bazel_bin_path' to 'output/usr/bin/'"
chmod 0755 "output/usr/bin/bazel-4"
BAZEL="$(pwd)/output/usr/bin/bazel-4"
clear_log
display "Build successful! Binary is here: ${BAZEL}"
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