v8 152.1.0

Rust bindings to V8
Documentation 
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#!/usr/bin/env python3
# Copyright 2015 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# Helper script to run dump_syms on Chrome Linux executables and strip
# them if needed.


import os
import subprocess
import sys

if len(sys.argv) != 5:
  print("dump_app_syms.py <dump_syms_exe> <strip_binary>")
  print("                 <binary_with_symbols> <symbols_output>")
  sys.exit(1)

dumpsyms = sys.argv[1]
strip_binary = sys.argv[2]
infile = sys.argv[3]
outfile = sys.argv[4]

# Dump only when the output file is out-of-date.
if not os.path.isfile(outfile) or \
   os.stat(outfile).st_mtime < os.stat(infile).st_mtime:
  try:
    with open(outfile, 'w') as outfileobj:
      # -v generates some warning outputs to stderr even on success.
      # Capture stderr to suppress warnings in the console during successful
      # runs, and show them only when the command fails.
      subprocess.run([dumpsyms, '-m', '-d', '-v', infile],
                     stdout=outfileobj,
                     stderr=subprocess.PIPE,
                     text=True,
                     check=True)
  except subprocess.CalledProcessError as e:
    # Show stderr on failure.
    sys.stderr.write(
        f"dump_app_syms.py: Failed to dump symbols for {infile}.\n")
    if e.stderr:
      sys.stderr.write("--- dumpsyms stderr ---\n")
      sys.stderr.write(e.stderr)
      sys.stderr.write("--- End of dumpsyms stderr ---\n")
    # Remove the output file on failure to make the build step atomic.
    if os.path.isfile(outfile):
      os.remove(outfile)
    raise

if strip_binary != '0':
  subprocess.check_call(['strip', infile])