| #!/bin/bash |
| # Copyright 2019 The gRPC Authors |
| # |
| # 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. |
| |
| |
| # Keeping up with Bazel's breaking changes is currently difficult. |
| # This script wraps calling bazel by downloading the currently |
| # supported version, and then calling it. This way, we can make sure |
| # that running bazel will always get meaningful results, at least |
| # until Bazel 1.0 is released. |
| # NOTE: This script relies on bazel's feature where //tools/bazel |
| # script can be used to hijack "bazel" invocations in given workspace. |
| |
| set -e |
| |
| # DISABLE_BAZEL_WRAPPER can be set to eliminate the wrapper logic |
| if [ "${DISABLE_BAZEL_WRAPPER}" != "" ] |
| then |
| if [ "${BAZEL_REAL}" != "" ] |
| then |
| # use BAZEL_REAL as set by |
| # https://github.com/bazelbuild/bazel/blob/master/scripts/packages/bazel.sh |
| # that originally invoked this script (this is what happens when you |
| # run "bazel" in our workspace) |
| exec -a "$0" "${BAZEL_REAL}" "$@" |
| else |
| # if BAZEL_REAL is not set, just invoke the default system bazel |
| exec bazel "$@" |
| fi |
| fi |
| |
| VERSION=1.0.0 |
| echo "INFO: Running bazel wrapper (see //tools/bazel for details), bazel version $VERSION will be used instead of system-wide bazel installation." >&2 |
| |
| BASEURL=https://github.com/bazelbuild/bazel/releases/download/ |
| pushd "$(dirname "$0")" >/dev/null |
| TOOLDIR=$(pwd) |
| |
| case $(uname -sm) in |
| "Linux x86_64") |
| suffix=linux-x86_64 |
| ;; |
| "Darwin x86_64") |
| suffix=darwin-x86_64 |
| ;; |
| *) |
| echo "Unsupported architecture: $(uname -sm)" >&2 |
| exit 1 |
| ;; |
| esac |
| |
| filename="bazel-$VERSION-$suffix" |
| |
| if [ ! -x "$filename" ] ; then |
| curl -L "$BASEURL/$VERSION/$filename" > "$filename" |
| chmod a+x "$filename" |
| fi |
| |
| popd >/dev/null |
| exec "$TOOLDIR/$filename" "$@" |