Adding binutils as a DEPS to allow DebugFission on Ubuntu Precise when compiling with clang.

third_party/binutils/download.py

+#!/usr/bin/env python
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+# vim: set ts=2 sw=2 et sts=2 ai:
+
+"""Minimal tool to download binutils from Google storage.
+
+TODO(mithro): Replace with generic download_and_extract tool.
+"""
+
+import os
+import platform
+import re
+import shutil
+import subprocess
+import sys
+
+
+BINUTILS_DIR = os.path.abspath(os.path.dirname(__file__))
+BINUTILS_FILE = 'binutils.tar.bz2'
+BINUTILS_OUT = os.path.join(BINUTILS_DIR, 'Release')
+BINUTILS_TOOLS = ['bin/ld.gold', 'bin/objcopy', 'bin/objdump']
+
+
+def ReadFile(filename):
+  with file(filename, 'r') as f:
+    return f.read().strip()
+
+
+def WriteFile(filename, content):
+  assert not os.path.exists(filename)
+  with file(filename, 'w') as f:
+    f.write(content)
+    f.write('\n')
+
+
+def main(args):
+  if not sys.platform.startswith('linux'):
+    return 0
+
+  if re.search('64', platform.processor(), re.I):

[Lei Zhang, 2014/04/02 21:30:13]

This may not work right for 32-bit userland + 64-bit kernel. There, it returns
x86_64. I have access to such a machine. If there's anything you'd like me to
test out, let me know.

+    arch_dir = 'Linux_x64'
+  elif re.search('(i[3456]86)|(i86pc)', platform.processor(), re.I):
+    arch_dir = 'Linux_ia32'
+  else:
+    print "WARNING: No compatible binutils found for your system!"
+    return 0
+
+  tarball = os.path.join(BINUTILS_DIR, arch_dir, BINUTILS_FILE)
+  sha1file = tarball + '.sha1'
+  stampfile = tarball + '.stamp'
+  assert os.path.exists(sha1file)
+
+  checksum = ReadFile(sha1file)
+
+  if os.path.exists(stampfile):
+    if checksum == ReadFile(stampfile):
+      return 0
+    else:
+      os.unlink(stampfile)
+
+  print "Downloading", tarball
+  subprocess.check_call([
+      'download_from_google_storage',
+      '--no_resume',
+      '--no_auth',
+      '--bucket', 'chromium-binutils',
+      '-s', sha1file])
+  assert os.path.exists(tarball)
+
+  if os.path.exists(BINUTILS_OUT):
+    shutil.rmtree(BINUTILS_OUT)
+  assert not os.path.exists(BINUTILS_OUT)
+  os.makedirs(BINUTILS_OUT)
+  assert os.path.exists(BINUTILS_OUT)
+
+  print "Extracting", tarball
+  subprocess.check_call(['tar', 'axf', tarball], cwd=BINUTILS_OUT)
+
+  for tool in BINUTILS_TOOLS:
+    assert os.path.exists(os.path.join(BINUTILS_OUT, tool))
+
+  WriteFile(stampfile, checksum)
+  return 0
+
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv))