xref: /aosp_15_r20/external/pigweed/pw_build/py/pw_build/nop.py (revision 61c4878ac05f98d0ceed94b57d316916de578985)
1# Copyright 2019 The Pigweed Authors
2#
3# Licensed under the Apache License, Version 2.0 (the "License"); you may not
4# use this file except in compliance with the License. You may obtain a copy of
5# the License at
6#
7#     https://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
11# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12# License for the specific language governing permissions and limitations under
13# the License.
14"""Does nothing.
15
16The purpose of this script is to allow for source file dependencies within GN
17to be attached to targets that do not typically support them, such as groups.
18
19For example, instead of creating a group target, a pw_python_action target to
20run this script can be created. The script can be given a list of input files,
21causing GN to rebuild the target and everything that depends on it whenever any
22input file is modified.
23
24This is useful in the case where metadata is attached to a group of files but
25not collected into a generated_file until a later target.
26"""
27