| #!/usr/bin/env fuchsia-vendored-python |
| # Copyright 2018 The Fuchsia Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| ### generates symlinks to Rust Cargo.toml output files |
| |
| import argparse |
| import os |
| import subprocess |
| import sys |
| |
| import rust |
| |
| |
| def main(): |
| parser = argparse.ArgumentParser( |
| "Generate symlinks to Rust Cargo.toml output files" |
| ) |
| parser.add_argument( |
| "gn_target", |
| type=rust.GnTarget, |
| help="GN target to generate a symlink for. \ |
| Use '.[:target]' to discover the cargo target \ |
| for the current directory or use the \ |
| absolute path to the target \ |
| (relative to $FUCHSIA_DIR). \ |
| For example: //garnet/bin/foo/bar:baz", |
| ) |
| parser.add_argument( |
| "--output", help="Path to Cargo.toml to generate", required=False |
| ) |
| parser.add_argument("--out-dir", help="Path to the Fuchsia build directory") |
| args = parser.parse_args() |
| args.gn_target.label_name += ".actual" |
| |
| build_dir = os.path.abspath(args.out_dir) |
| |
| if args.output: |
| output = os.path.abspath(args.output) |
| else: |
| output = os.path.join(args.gn_target.src_path, "Cargo.toml") |
| |
| manifest_path = args.gn_target.manifest_path(build_dir=build_dir) |
| if os.path.exists(manifest_path): |
| try: |
| os.remove(output) |
| except OSError: |
| pass |
| print(f"Linking '{output}' for target '{args.gn_target}'") |
| rel_path = os.path.relpath(manifest_path, os.path.dirname(output)) |
| os.symlink(rel_path, output) |
| else: |
| print(f"Could not find a Cargo.toml file at '{manifest_path}'") |
| print("") |
| print("Check that:") |
| print(f" - `{args.gn_target}` is an existing Rust target") |
| print(" - You ran `fx set` with --cargo-toml-gen") |
| print(" - You have run `fx build`") |
| return 1 |
| |
| |
| if __name__ == "__main__": |
| sys.exit(main()) |