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#!/bin/bash
# Copyright 2020 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.
# Helper script for setting environment variables required for Bazel/Soong
# mixed builds prototype. For development use only.
#
# Usage:
# export BAZEL_PATH=[some_bazel_path] && source bazelenv.sh
#
# If BAZEL_PATH is not set, `which bazel` will be used
# to locate the appropriate bazel to use.
# Function to find top of the source tree (if $TOP isn't set) by walking up the
# tree.
function gettop
{
local TOPFILE=build/soong/root.bp
if [ -n "${TOP-}" -a -f "${TOP-}/${TOPFILE}" ] ; then
# The following circumlocution ensures we remove symlinks from TOP.
(cd $TOP; PWD= /bin/pwd)
else
if [ -f $TOPFILE ] ; then
# The following circumlocution (repeated below as well) ensures
# that we record the true directory name and not one that is
# faked up with symlink names.
PWD= /bin/pwd
else
local HERE=$PWD
T=
while [ \( ! \( -f $TOPFILE \) \) -a \( $PWD != "/" \) ]; do
\cd ..
T=`PWD= /bin/pwd -P`
done
\cd $HERE
if [ -f "$T/$TOPFILE" ]; then
echo $T
fi
fi
fi
}
BASE_DIR="$(mktemp -d)"
if [ -z "$BAZEL_PATH" ] ; then
export BAZEL_PATH="$(which bazel)"
fi
export USE_BAZEL=1
export BAZEL_HOME="$BASE_DIR/bazelhome"
export BAZEL_OUTPUT_BASE="$BASE_DIR/output"
export BAZEL_WORKSPACE="$(gettop)"
echo "USE_BAZEL=${USE_BAZEL}"
echo "BAZEL_PATH=${BAZEL_PATH}"
echo "BAZEL_HOME=${BAZEL_HOME}"
echo "BAZEL_OUTPUT_BASE=${BAZEL_OUTPUT_BASE}"
echo "BAZEL_WORKSPACE=${BAZEL_WORKSPACE}"
mkdir -p $BAZEL_HOME
mkdir -p $BAZEL_OUTPUT_BASE
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