1 files changed, 45 insertions, 0 deletions
diff --git a/tools/run_rustc.py b/tools/run_rustc.py
new file mode 100644
index 000000000..9e7284c26
--- /dev/null
+++ b/tools/run_rustc.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env python
+# Inspired by
+# https://fuchsia.googlesource.com/build/+/master/rust/build_rustc_target.py
+# 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.
+import sys
+import os
+import argparse
+import subprocess
+
+
+# Updates the path of the main target in the depfile to the relative path
+# from base_path build_output_path
+def fix_depfile(depfile_path, base_path, build_output_path):
+    with open(depfile_path, "r") as depfile:
+        content = depfile.read()
+    content_split = content.split(': ', 1)
+    target_path = os.path.relpath(build_output_path, start=base_path)
+    new_content = "%s: %s" % (target_path, content_split[1])
+    with open(depfile_path, "w") as depfile:
+        depfile.write(new_content)
+
+
+def main():
+    parser = argparse.ArgumentParser("Compiles a Rust crate")
+    parser.add_argument(
+        "--depfile",
+        help="Path at which the output depfile should be stored",
+        required=False)
+    parser.add_argument(
+        "--output_file",
+        help="Path at which the output file should be stored",
+        required=False)
+    args, rest = parser.parse_known_args()
+
+    env = os.environ.copy()
+    subprocess.check_call(["rustc"] + rest, env=env)
+
+    if args.depfile and args.output_file:
+        fix_depfile(args.depfile, os.getcwd(), args.output_file)
+
+
+if __name__ == '__main__':
+    sys.exit(main())