#!/bin/bash
#
# Copyright 2017 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.

set -u

mk="$@"

cat <<EOF > Makefile
test: foo
foo:
	@echo "FAIL"
foo:
	@echo "PASS"
EOF

if echo "${mk}" | grep -qv "kati"; then
  # Make doesn't use find emulator, or support --werror_find_emulator, so write
  # expected output.
  echo 'Makefile:5: warning: overriding commands for target "foo"'
  echo 'Makefile:3: warning: ignoring old commands for target "foo"'
  echo 'PASS'
  echo 'Clean exit'
else
  ${mk} 2>&1 && echo "Clean exit"
fi

if echo "${mk}" | grep -qv "kati"; then
  echo 'Makefile:5: *** overriding commands for target "foo", previously defined at Makefile:3'
else
  ${mk} --werror_overriding_commands 2>&1 && echo "Clean exit"
fi