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9c35aac84a
Throughout the GN build, a common pattern that occurs is:
if (condition) {
my_real_target(target_name) {
# ...
}
} else {
# Print an error indicating that the user must configure condition.
pw_python_action(target_name) {
script = "condition_not_met.py"
}
}
This typically requires writing a custom error-printing script for each
error message. While some error messages have custom logic, many only
need to print a simple string.
This change adds a pw_error GN template which prints out a specified
error message and the target in which it occurred.
Change-Id: Ia93787d9353bac190bf6e1e567e09f9a07d9703f
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/22720
Reviewed-by: Keir Mierle <keir@google.com>
Reviewed-by: Armando Montanez <amontanez@google.com>
Reviewed-by: Wyatt Hepler <hepler@google.com>
Commit-Queue: Alexei Frolov <frolv@google.com>
37 lines
1.1 KiB
Plaintext
37 lines
1.1 KiB
Plaintext
# Copyright 2020 The Pigweed Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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import("python_action.gni")
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# Prints an error message and exits the build unsuccessfully.
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#
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# Args:
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# message: The message to print.
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#
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template("pw_error") {
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assert(defined(invoker.message) && invoker.message != "",
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"pw_error requires an error message")
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pw_python_action(target_name) {
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script = "$dir_pw_build/py/pw_build/error.py"
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args = [
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"--target",
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get_label_info(target_name, "label_no_toolchain"),
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"--message",
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invoker.message,
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]
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stamp = true
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}
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}
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