68 lines
2.4 KiB
Plaintext
68 lines
2.4 KiB
Plaintext
# Copyright 2022 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("//build_overrides/pigweed.gni")
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import("$dir_pw_build/python_action.gni")
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# This isn't in a declare_args() block as it likely isn't necessary to change
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# this.
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pw_build_RELATIVE_PATH_TRANSFORM_JSON =
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"$root_build_dir/relative_path_transformations.json"
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# Creates a JSON file containing an array of source file names with
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# -ffile-prefix-map style transformations applied to match __FILE__ as seen in
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# C/C++ sources when using pw_build's `relative_paths` config.
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#
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# Args:
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# deps (required): A list of targets to recursively extract file names from.
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# outputs (required): An array with a single element: the path to write the
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# transformed file paths to. The output format is a JSON array of
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# strings.
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template("pw_relative_source_file_names") {
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_raw_file_names_json = "$target_gen_dir/${target_name}.raw.json"
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# The various pw_* templates add pw_source_files metadata which we
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# aggregate here.
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generated_file("${target_name}.raw_source_files") {
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forward_variables_from(invoker, [ "deps" ])
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# Rebase the paths so that they match those that are passed to the
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# compiler.
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rebase = root_build_dir
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outputs = [ _raw_file_names_json ]
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data_keys = [ "pw_source_files" ]
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output_conversion = "json"
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}
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pw_python_action(target_name) {
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deps = [ ":${target_name}.raw_source_files" ]
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python_deps = [ "$dir_pw_build/py" ]
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module = "pw_build.file_prefix_map"
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# GN-ism: You can't do invoker.outputs[0], but _outs[0] works.
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_outs = invoker.outputs
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args = [
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rebase_path(_raw_file_names_json, root_build_dir),
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"--prefix-map-json",
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rebase_path(pw_build_RELATIVE_PATH_TRANSFORM_JSON, root_build_dir),
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"--out",
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rebase_path(_outs[0], root_build_dir),
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]
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inputs = [ _raw_file_names_json ]
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forward_variables_from(invoker, [ "outputs" ])
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}
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}
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