Firebase cpp: Created kokoro job config to build tools used for firebase releases

PiperOrigin-RevId: 280513681

Author: markchandler

build_tools/README.md

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+# Build Tools
+
+This directory contains build configuration files used by kokoro to build
+tooling needed for firebase releases.

build_tools/release.cfg

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+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Location of the bash script to run.
+build_file: "google3/firebase/app/client/cpp/build_tools/release.sh"
+
+gfile: "/x20/teams/firebase/build_tools/binutils-latest.tar.gz"
+
+action {
+  define_artifacts {
+    regex: "install-output/*"
+    strip_prefix: "install-output/"
+  }
+}

build_tools/release.sh

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+#!/bin/bash
+#
+# Copyright 2019 Google LLC
+#
+# 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.
+#
+# Builds build tools used in building Firebase Cpp Sdk
+
+# Fail on any error.
+set -e
+# Display commands being run.
+set -x
+
+# Install binutils deps
+sudo apt-get install -y texinfo bison flex
+
+# Extract latest binutil source from x20
+tar -xzf "${KOKORO_ARTIFACTS_DIR}/gfile/binutils-*.tar.gz" -C "${KOKORO_ARTIFACTS_DIR}/binutils"
+
+cd "${KOKORO_ARTIFACTS_DIR}/binutils"
+./configure --enable-targets=all --prefix="${KOKORO_ARTIFACTS_DIR}/install-output"
+make -j 8 all-binutils
+make install