blob: a7c0e69101076826ac72341b544ee0e4f0df9b8a [file] [log] [blame]
# Copyright 2020 The Pigweed 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
# 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.
# Prints an error message and exits the build unsuccessfully. Either 'message'
# or 'message_lines' must be specified, but not both.
# Args:
# message: The message to print. Use \n for newlines.
# message_lines: List of lines to use for the message.
template("pw_error") {
defined(invoker.message) != defined(invoker.message_lines),
"pw_error requires either a 'message' string or a 'message_lines' list")
if (defined(invoker.message_lines)) {
_message = string_join("\n", invoker.message_lines)
} else {
_message = invoker.message
assert(_message != "", "The message cannot be empty")
action(target_name) {
script = "$dir_pw_build/py/pw_build/"
args = [
get_label_info(":$target_name", "label_with_toolchain"),
# This output file is never created.
outputs = [ "$target_gen_dir/$target_name.build_error" ]