tools addition to automate setting up windows toolchain

tools/win/toolchain/toolchain.py

Index: tools/win/toolchain/toolchain.py
diff --git a/tools/win/toolchain/toolchain.py b/tools/win/toolchain/toolchain.py
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+# Copyright 2012 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.
+
+# Extracts a Windows toolchain suitable for building Chrome from various
+# downloadable pieces.
+
+
+from optparse import OptionParser
+import os
+import shutil
+import subprocess
+import sys
+import tempfile
+import urllib2
+
+
+g_temp_dirs = []
+
+
+def RunOrDie(command):
+  rc = subprocess.call(command, shell=True)
+  if rc != 0:
+    raise SystemExit('%s failed.' % command)
+
+
+def TempDir():
+  """Generate a temporary directory (for downloading or extracting to) and keep
+  track of the directory that's created for cleaning up later."""
+  global g_temp_dirs
+  temp = tempfile.mkdtemp()
+  g_temp_dirs.append(temp)
+  return temp
+
+
+def DeleteAllTempDirs():
+  """Remove all temporary directories created by |TempDir()|."""
+  global g_temp_dirs
+  if g_temp_dirs:
+    sys.stdout.write('Cleaning up temporaries...\n')
+  for temp in g_temp_dirs:
+    # shutil.rmtree errors out on read only attributes.
+    RunOrDie('rmdir /s/q "%s"' % temp)
+  g_temp_dirs = []
+
+
+def Download(url, local_path):
+  """Download a large-ish binary file and print some status information while
+  doing so."""
+  sys.stdout.write('Downloading %s...' % url)
+  req = urllib2.urlopen(url)
+  content_length = int(req.headers.get('Content-Length', 0))
+  bytes_read = 0
+  with open(local_path, 'wb') as file:
+    while True:
+      chunk = req.read(1024 * 1024)
+      if not chunk:
+        break
+      bytes_read += len(chunk)
+      file.write(chunk)
+      sys.stdout.write('.')
+  sys.stdout.write('\n')
+  if content_length and content_length != bytes_read:
+    raise SystemExit('Got incorrect number of bytes downloading %s' % url)
+
+
+def DownloadSDK71Iso():
+  sdk7_temp_dir = TempDir()
+  target_path = os.path.join(sdk7_temp_dir, 'GRMSDKX_EN_DVD.iso')
+  Download(
+      ('http://download.microsoft.com/download/'
+       'F/1/0/F10113F5-B750-4969-A255-274341AC6BCE/GRMSDKX_EN_DVD.iso'),
+      target_path)
+  return target_path
+
+
+def DownloadWDKIso():
+  wdk_temp_dir = TempDir()
+  target_path = os.path.join(wdk_temp_dir, 'GRMWDK_EN_7600_1.ISO')
+  Download(
+      ('http://download.microsoft.com/download/'
+       '4/A/2/4A25C7D5-EFBE-4182-B6A9-AE6850409A78/GRMWDK_EN_7600_1.ISO'),
+      target_path)
+  return target_path
+
+
+def DownloadSDKUpdate():
+  sdk_update_temp_dir = TempDir()
+  target_path = os.path.join(sdk_update_temp_dir, 'VC-Compiler-KB2519277.exe')
+  Download(
+      ('http://download.microsoft.com/download/'
+        '7/5/0/75040801-126C-4591-BCE4-4CD1FD1499AA/VC-Compiler-KB2519277.exe'),
+      target_path)
+  return target_path
+
+
+def DownloadDirectXSDK():
+  dxsdk_temp_dir = TempDir()
+  target_path = os.path.join(dxsdk_temp_dir, 'DXSDK_Jun10.exe')
+  Download(
+      ('http://download.microsoft.com/download/'
+       'A/E/7/AE743F1F-632B-4809-87A9-AA1BB3458E31/DXSDK_Jun10.exe'),
+      target_path)
+  return target_path
+
+
+def DownloadSDK8():
+  """Download the Win8 SDK. This one is slightly different than the simple
+  ones above. There is no .ISO distribution for the Windows 8 SDK. Rather, a
+  tool is provided that is a download manager. This is used to download the
+  various .msi files to a target location. Unfortunately, this tool requires
+  elevation for no obvious reason even when only downloading, so this function
+  will trigger a UAC elevation if the script is not run from an elevated
+  prompt."""
+  sdk_temp_dir = TempDir()
+  target_path = os.path.join(sdk_temp_dir, 'sdksetup.exe')
+  standalone_path = os.path.join(sdk_temp_dir, 'Standalone')
+  Download(
+      ('http://download.microsoft.com/download/'
+       'F/1/3/F1300C9C-A120-4341-90DF-8A52509B23AC/standalonesdk/sdksetup.exe'),
+      target_path)
+  sys.stdout.write(
+      'Running sdksetup.exe to download Win8 SDK (may request elevation)...\n')
+  count = 0
+  while count < 5:
+    rc = RunOrDie(target_path + ' /quiet '
+                  '/features OptionId.WindowsDesktopSoftwareDevelopmentKit '
+                  '/layout ' + standalone_path)
+    if rc == 0:
+      return standalone_path
+      break
+    count += 1
+    sys.stdout.write('Windows 8 SDK failed to download, retrying.\n')
+  raise SystemExit("After multiple retries, couldn't download Win8 SDK")
+
+
+class SourceImages(object):
+  def __init__(self, sdk8_path, wdk_iso, sdk7_update, sdk7_path, dxsdk_path):
+    self.sdk8_path = sdk8_path
+    self.wdk_iso = wdk_iso
+    self.sdk7_update = sdk7_update
+    self.sdk7_path = sdk7_path
+    self.dxsdk_path = dxsdk_path
+
+
+def GetSourceImages():
+  """Download all distribution archives for the components we need."""
+  if len(sys.argv) >= 2 and sys.argv[1] == 'local':
+    return SourceImages(
+        sdk8_path=r'C:\Users\Scott\Desktop\wee\Standalone',
+        wdk_iso=r'c:\users\scott\desktop\wee\GRMWDK_EN_7600_1.ISO',
+        sdk7_update=r'c:\users\scott\desktop\wee\VC-Compiler-KB2519277.exe',
+        sdk7_path=r'C:\Users\Scott\Desktop\wee\GRMSDKX_EN_DVD.ISO',
+        dxsdk_path=r'C:\Users\Scott\Desktop\wee\DXSDK_Jun10.exe')
+  else:
+    # Note that we do the Win8 SDK first so that its silly UAC prompt
+    # happens before the user wanders off to get coffee.
+    sdk8_path = DownloadSDK8()
+    wdk_iso = DownloadWDKIso()
+    sdk7_update = DownloadSDKUpdate()
+    sdk7_path = DownloadSDK71Iso()
+    dxsdk_path = DownloadDirectXSDK()
+    return SourceImages(sdk8_path, wdk_iso, sdk7_update, sdk7_path, dxsdk_path)
+
+
+def ExtractIso(iso_path):
+  """Use 7zip to extract the contents of the given .iso (or self-extracting
+  .exe)."""
+  target_path = TempDir()
+  sys.stdout.write('Extracting %s...\n' % iso_path)
+  # TODO(scottmg): Do this (and exe) manually with python code.
+  # Note that at the beginning of main() we set the working directory to 7z's
+  # location.
+  RunOrDie('7z x "%s" -y "-o%s" >nul' % (iso_path, target_path))
+  return target_path
+
+
+ExtractExe = ExtractIso
+
+
+def ExtractMsi(msi_path):
+  """Use msiexec to extract the contents of the given .msi file."""
+  sys.stdout.write('Extracting %s...\n' % msi_path)
+  target_path = TempDir()
+  RunOrDie('msiexec /a "%s" /qn TARGETDIR="%s"' % (msi_path, target_path))
+  return target_path
+
+
+class ExtractedComponents(object):
+  def __init__(self,
+      vc_x86, vc_x64,
+      buildtools_x86, buildtools_x64, libs_x86, libs_x64, headers,
+      update_x86, update_x64,
+      sdk_path, metro_sdk_path,
+      dxsdk):
+    self.vc_x86 = vc_x86
+    self.vc_x64 = vc_x64
+    self.buildtools_x86 = buildtools_x86
+    self.buildtools_x64 = buildtools_x64
+    self.libs_x86 = libs_x86
+    self.libs_x64 = libs_x64
+    self.headers = headers
+    self.update_x86 = update_x86
+    self.update_x64 = update_x64
+    self.sdk_path = sdk_path
+    self.metro_sdk_path = metro_sdk_path
+    self.dxsdk = dxsdk
+
+
+def ExtractComponents(images):
+  """Given the paths to the images, extract the required parts, and return the
+  an object containing paths to all the pieces."""
+  extracted_sdk7 = ExtractIso(images.sdk7_path)
+  extracted_vc_x86 = \
+      ExtractMsi(os.path.join(extracted_sdk7,
+                              r'Setup\vc_stdx86\vc_stdx86.msi'))
+  extracted_vc_x64 = \
+      ExtractMsi(os.path.join(extracted_sdk7,
+                              r'Setup\vc_stdamd64\vc_stdamd64.msi'))
+
+  extracted_wdk = ExtractIso(images.wdk_iso)
+  extracted_buildtools_x86 = \
+      ExtractMsi(os.path.join(extracted_wdk, r'WDK\buildtools_x86fre.msi'))
+  extracted_buildtools_x64 = \
+      ExtractMsi(os.path.join(extracted_wdk, r'WDK\buildtools_x64fre.msi'))
+  extracted_libs_x86 = \
+      ExtractMsi(os.path.join(extracted_wdk, r'WDK\libs_x86fre.msi'))
+  extracted_libs_x64 = \
+      ExtractMsi(os.path.join(extracted_wdk, r'WDK\libs_x64fre.msi'))
+  extracted_headers = \
+      ExtractMsi(os.path.join(extracted_wdk, r'WDK\headers.msi'))
+
+  extracted_update = ExtractExe(images.sdk7_update)
+  extracted_update_x86 = \
+      ExtractMsi(os.path.join(extracted_update, 'vc_stdx86.msi'))
+  extracted_update_x64 = \
+      ExtractMsi(os.path.join(extracted_update, 'vc_stdamd64.msi'))
+
+  sdk_msi_path = os.path.join(
+      images.sdk8_path,
+      r'Installers\Windows Software Development Kit-x86_en-us.msi')
+  extracted_sdk_path = ExtractMsi(sdk_msi_path)
+
+  sdk_metro_msi_path = os.path.join(
+      images.sdk8_path,
+      'Installers',
+      'Windows Software Development Kit for Metro style Apps-x86_en-us.msi')
+  extracted_metro_sdk_path = ExtractMsi(sdk_metro_msi_path)
+
+  extracted_dxsdk = ExtractExe(images.dxsdk_path)
+
+  return ExtractedComponents(
+      vc_x86=extracted_vc_x86,
+      vc_x64=extracted_vc_x64,
+      buildtools_x86=extracted_buildtools_x86,
+      buildtools_x64=extracted_buildtools_x64,
+      libs_x86=extracted_libs_x86,
+      libs_x64=extracted_libs_x64,
+      headers=extracted_headers,
+      update_x86=extracted_update_x86,
+      update_x64=extracted_update_x64,
+      sdk_path=extracted_sdk_path,
+      metro_sdk_path=extracted_metro_sdk_path,
+      dxsdk=extracted_dxsdk)
+
+
+def PullFrom(list_of_path_pairs, source_root, target_dir):
+  """Each pair in |list_of_path_pairs| is (from, to). Join the 'from' with
+  |source_root| and the 'to' with |target_dir| and perform a recursive copy."""
+  for source, destination in list_of_path_pairs:
+    full_source = os.path.join(source_root, source)
+    full_target = os.path.join(target_dir, destination)
+    rc = os.system('robocopy /s "%s" "%s" >nul' % (full_source, full_target))
+    if (rc & 8) != 0 or (rc & 16) != 0:
+      # ref: http://ss64.com/nt/robocopy-exit.html
+      raise SystemExit("Couldn't copy %s to %s" % (full_source, full_target))
+
+
+def CopyToFinalLocation(extracted, target_dir):
+  """Copy all the directories we need to the target location."""
+  sys.stdout.write('Pulling together required pieces...\n')
+
+  # Note that order is important because some of the older ones are
+  # overwritten by updates.
+  from_sdk = [(r'Windows Kits\8.0', r'win8sdk')]
+  PullFrom(from_sdk, extracted.sdk_path, target_dir)
+
+  from_metro_sdk = [(r'Windows Kits\8.0', r'win8sdk')]
+  PullFrom(from_sdk, extracted.metro_sdk_path, target_dir)
+
+  from_buildtools_x86 = [
+      (r'WinDDK\7600.16385.win7_wdk.100208-1538\bin\x86', r'WDK\bin'),
+      (r'WinDDK\7600.16385.win7_wdk.100208-1538\bin\amd64', r'WDK\bin'),
+      ]
+  PullFrom(from_buildtools_x86, extracted.buildtools_x86, target_dir)
+
+  from_buildtools_x64 = [
+      (r'WinDDK\7600.16385.win7_wdk.100208-1538\bin\amd64', r'WDK\bin'),
+      ]
+  PullFrom(from_buildtools_x64, extracted.buildtools_x64, target_dir)
+
+  from_libs_x86 = [
+      (r'WinDDK\7600.16385.win7_wdk.100208-1538\lib', r'WDK\lib'),
+      ]
+  PullFrom(from_libs_x86, extracted.libs_x86, target_dir)
+
+  from_libs_x64 = [
+      (r'WinDDK\7600.16385.win7_wdk.100208-1538\lib', r'WDK\lib'),
+      ]
+  PullFrom(from_libs_x64, extracted.libs_x64, target_dir)
+
+  from_headers = [
+      (r'WinDDK\7600.16385.win7_wdk.100208-1538\inc', r'WDK\inc'),
+      ]
+  PullFrom(from_headers, extracted.headers, target_dir)
+
+  # The compiler update to get the SP1 x86 compiler is a bit of a mess. See
+  # http://goo.gl/n1DeO. The summary is that update for the standalone
+  # compiler binary installs a broken set of headers. So, we need to pull the
+  # new binaries from the update, but keep the older set of headers.
+
+  from_vcupdate_x86 = [
+      (r'Program Files\Microsoft Visual Studio 10.0', '.'),
+      (r'Win\System', r'VC\bin'),
+      ]
+  PullFrom(from_vcupdate_x86, extracted.update_x86, target_dir)
+
+  from_vcupdate_x64 = [
+      (r'Program Files(64)\Microsoft Visual Studio 10.0', '.'),
+      (r'Win\System64', r'VC\bin\amd64'),
+      ]
+  PullFrom(from_vcupdate_x64, extracted.update_x64, target_dir)
+
+  from_sdk7_x86 = [
+      (r'Program Files\Microsoft Visual Studio 10.0', '.'),
+      (r'Win\System', r'VC\bin'),
+      ]
+  PullFrom(from_sdk7_x86, extracted.vc_x86, target_dir)
+
+  from_sdk7_x64 =[
+      (r'Program Files(64)\Microsoft Visual Studio 10.0', '.'),
+      (r'Win\System64', r'VC\bin\amd64'),
+      ]
+  PullFrom(from_sdk7_x64, extracted.vc_x64, target_dir)
+
+  # Now, re-get just the binaries from the update.
+  from_vcupdate_x86 = [
+      (r'Program Files\Microsoft Visual Studio 10.0\VC\bin', r'VC\bin'),
+      ]
+  PullFrom(from_vcupdate_x86, extracted.update_x86, target_dir)
+
+  from_vcupdate_x64 = [
+      (r'Program Files(64)\Microsoft Visual Studio 10.0\VC\bin', r'VC\bin'),
+      ]
+  PullFrom(from_vcupdate_x64, extracted.update_x64, target_dir)
+
+  from_dxsdk = [
+      (r'DXSDK\Include', r'DXSDK\Include'),
+      (r'DXSDK\Lib', r'DXSDK\Lib'),
+      (r'DXSDK\Redist', r'DXSDK\Redist'),
+      ]
+  PullFrom(from_dxsdk, extracted.dxsdk, target_dir)
+
+
+def PatchAsyncInfo(target_dir):
+  """Apply patch from
+  http://www.chromium.org/developers/how-tos/build-instructions-windows for
+  asyncinfo.h."""
+  sys.stdout.write('Patching asyncinfo.h...\n')
+  asyncinfo_h_path = os.path.join(
+      target_dir, r'win8sdk\Include\winrt\asyncinfo.h')
+  with open(asyncinfo_h_path, 'rb') as f:
+    asyncinfo_h = f.read()
+  patched = asyncinfo_h.replace(
+      'enum class AsyncStatus {', 'enum AsyncStatus {')
+  with open(asyncinfo_h_path, 'wb') as f:
+    f.write(patched)
+
+
+def GenerateSetEnvCmd(target_dir):
+  """Generate a batch file that gyp expects to exist to set up the compiler
+  environment. This is normally generated by a full install of the SDK, but we
+  do it here manually since we do not do a full install."""
+  with open(os.path.join(
+        target_dir, r'win8sdk\bin\SetEnv.cmd'), 'w') as file:
+    file.write('@echo off\n')
+    file.write(':: Generated by tools\\win\\toolchain\\toolchain.py.\n')
+    # Common to x86 and x64
+    file.write('set PATH=%s;%%PATH%%\n' % (
+        os.path.join(target_dir, r'Common7\IDE')))
+    file.write('set INCLUDE=%s;%s;%s\n' % (
+        os.path.join(target_dir, r'win8sdk\Include\um'),
+        os.path.join(target_dir, r'win8sdk\Include\shared'),
+        os.path.join(target_dir, r'VC\include')))
+    file.write('if "%1"=="/x64" goto x64\n')
+
+    # x86 only.
+    file.write('set PATH=%s;%s;%s;%%PATH%%\n' % (
+        os.path.join(target_dir, r'win8sdk\bin\x86'),
+        os.path.join(target_dir, r'VC\bin'),
+        os.path.join(target_dir, r'WDK\bin')))
+    file.write('set LIB=%s;%s\n' % (
+        os.path.join(target_dir, r'VC\lib'),
+        os.path.join(target_dir, r'win8sdk\Lib\win8\um\x86')))
+    file.write('goto done\n')
+
+    # x64 only.
+    file.write(':x64\n')
+    file.write('set PATH=%s;%s;%s;%%PATH%%\n' % (
+        os.path.join(target_dir, r'win8sdk\bin\x64'),
+        os.path.join(target_dir, r'VC\bin\amd64'),
+        os.path.join(target_dir, r'WDK\bin\amd64')))
+    file.write('set LIB=%s;%s\n' % (
+        os.path.join(target_dir, r'VC\lib\amd64'),
+        os.path.join(target_dir, r'win8sdk\Lib\win8\um\x64')))
+
+    file.write(':done\n')
+
+
+def GenerateTopLevelEnv(target_dir):
+  """Generate a batch file that sets up various environment variables that let
+  the Chromium build files and gyp find SDKs and tools."""
+  with open(os.path.join(target_dir, r'env.bat'), 'w') as file:
+    file.write('@echo off\n')
+    file.write(':: Generated by tools\\win\\toolchain\\toolchain.py.\n')
+    file.write('set GYP_DEFINES=windows_sdk_path="%s" '
+                'component=shared_library\n' % (
+                    os.path.join(target_dir, 'win8sdk')))
+    file.write('set GYP_MSVS_VERSION=2010e\n')
+    file.write('set GYP_MSVS_OVERRIDE_PATH=%s\n' % target_dir)
+    file.write('set GYP_GENERATORS=ninja\n')
+    file.write('set WDK_DIR=%s\n' % os.path.join(target_dir, r'WDK'))
+    file.write('set DXSDK_DIR=%s\n' % os.path.join(target_dir, r'DXSDK'))
+    file.write('set WindowsSDKDir=%s\n' %
+        os.path.join(target_dir, r'win8sdk'))
+    file.write('echo Environment set for toolchain in %s.\n' % target_dir)
+    file.write('cd /d %s\\..\n' % target_dir)
+
+
+def main():
+  try:
+    parser = OptionParser()
+    parser.add_option('--targetdir', metavar='DIR',
+                      help='put toolchain into DIR',
+                      default=os.path.abspath('win_toolchain'))
+    options, args = parser.parse_args()
+    target_dir = os.path.abspath(options.targetdir)
+    # Set the working directory to 7z subdirectory. 7-zip doesn't find its
+    # codec dll very well, so this is the simplest way to make sure it runs
+    # correctly, as we don't otherwise care about working directory.
+    os.chdir(os.path.join(os.path.dirname(os.path.abspath(__file__)), '7z'))
+    images = GetSourceImages()
+    extracted = ExtractComponents(images)
+    CopyToFinalLocation(extracted, target_dir)
+    PatchAsyncInfo(target_dir)
+    GenerateSetEnvCmd(target_dir)
+    GenerateTopLevelEnv(target_dir)
+  finally:
+    DeleteAllTempDirs()
+
+  sys.stdout.write(
+      '\nIn a (clean) cmd shell, you can now run\n\n'
+      '  %s\\env.bat\n\n'
+      'then\n\n'
+      "  gclient runhooks (or gclient sync if you haven't pulled deps yet)\n"
+      '  ninja -C out\Debug chrome\n\n'
+      'Note that this script intentionally does not modify any global\n'
+      'settings like the registry, or system environment variables, so you\n'
+      'will need to run the above env.bat whenever you start a new\n'
+      'shell.\n\n' % target_dir)
+
+
+if __name__ == '__main__':
+  main()