Move logic of gyp_chromium into gyp_chromium.py

build/gyp_chromium

Index: build/gyp_chromium
diff --git a/build/gyp_chromium b/build/gyp_chromium
index 9dac8710ff2116d95eb01f822b67a7996c8d11ff..4fc62bad9ba19afe3e7624135faab14e91eebb12 100755
--- a/build/gyp_chromium
+++ b/build/gyp_chromium
@@ -1,333 +1,12 @@
 #!/usr/bin/env python
-
 # Copyright (c) 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.
 
-# This script is wrapper for Chromium that adds some support for how GYP
-# is invoked by Chromium beyond what can be done in the gclient hooks.
-
-import argparse
-import glob
-import gyp_environment
-import os
-import re
-import shlex
-import subprocess
-import string
-import sys
-import vs_toolchain
-
-script_dir = os.path.dirname(os.path.realpath(__file__))
-chrome_src = os.path.abspath(os.path.join(script_dir, os.pardir))
-
-sys.path.insert(0, os.path.join(chrome_src, 'tools', 'gyp', 'pylib'))
-import gyp
-
-# Assume this file is in a one-level-deep subdirectory of the source root.
-SRC_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
-
-# Add paths so that pymod_do_main(...) can import files.
-sys.path.insert(1, os.path.join(chrome_src, 'android_webview', 'tools'))
-sys.path.insert(1, os.path.join(chrome_src, 'build', 'android', 'gyp'))
-sys.path.insert(1, os.path.join(chrome_src, 'chrome', 'tools', 'build'))
-sys.path.insert(1, os.path.join(chrome_src, 'chromecast', 'tools', 'build'))
-sys.path.insert(1, os.path.join(chrome_src, 'ios', 'chrome', 'tools', 'build'))
-sys.path.insert(1, os.path.join(chrome_src, 'native_client', 'build'))
-sys.path.insert(1, os.path.join(chrome_src, 'native_client_sdk', 'src',
-    'build_tools'))
-sys.path.insert(1, os.path.join(chrome_src, 'remoting', 'tools', 'build'))
-sys.path.insert(1, os.path.join(chrome_src, 'third_party', 'liblouis'))
-sys.path.insert(1, os.path.join(chrome_src, 'third_party', 'WebKit',
-    'Source', 'build', 'scripts'))
-sys.path.insert(1, os.path.join(chrome_src, 'tools'))
-sys.path.insert(1, os.path.join(chrome_src, 'tools', 'generate_shim_headers'))
-sys.path.insert(1, os.path.join(chrome_src, 'tools', 'grit'))
-
-# On Windows, Psyco shortens warm runs of build/gyp_chromium by about
-# 20 seconds on a z600 machine with 12 GB of RAM, from 90 down to 70
-# seconds.  Conversely, memory usage of build/gyp_chromium with Psyco
-# maxes out at about 158 MB vs. 132 MB without it.
-#
-# Psyco uses native libraries, so we need to load a different
-# installation depending on which OS we are running under. It has not
-# been tested whether using Psyco on our Mac and Linux builds is worth
-# it (the GYP running time is a lot shorter, so the JIT startup cost
-# may not be worth it).
-if sys.platform == 'win32':
-  try:
-    sys.path.insert(0, os.path.join(chrome_src, 'third_party', 'psyco_win32'))
-    import psyco
-  except:
-    psyco = None
-else:
-  psyco = None
-
-
-def GetSupplementalFiles():
-  """Returns a list of the supplemental files that are included in all GYP
-  sources."""
-  return glob.glob(os.path.join(chrome_src, '*', 'supplement.gypi'))
-
-
-def ProcessGypDefinesItems(items):
-  """Converts a list of strings to a list of key-value pairs."""
-  result = []
-  for item in items:
-    tokens = item.split('=', 1)
-    # Some GYP variables have hyphens, which we don't support.
-    if len(tokens) == 2:
-      result += [(tokens[0], tokens[1])]
-    else:
-      # No value supplied, treat it as a boolean and set it. Note that we
-      # use the string '1' here so we have a consistent definition whether
-      # you do 'foo=1' or 'foo'.
-      result += [(tokens[0], '1')]
-  return result
-
-
-def GetGypVars(supplemental_files):
-  """Returns a dictionary of all GYP vars."""
-  # Find the .gyp directory in the user's home directory.
-  home_dot_gyp = os.environ.get('GYP_CONFIG_DIR', None)
-  if home_dot_gyp:
-    home_dot_gyp = os.path.expanduser(home_dot_gyp)
-  if not home_dot_gyp:
-    home_vars = ['HOME']
-    if sys.platform in ('cygwin', 'win32'):
-      home_vars.append('USERPROFILE')
-    for home_var in home_vars:
-      home = os.getenv(home_var)
-      if home != None:
-        home_dot_gyp = os.path.join(home, '.gyp')
-        if not os.path.exists(home_dot_gyp):
-          home_dot_gyp = None
-        else:
-          break
-
-  if home_dot_gyp:
-    include_gypi = os.path.join(home_dot_gyp, "include.gypi")
-    if os.path.exists(include_gypi):
-      supplemental_files += [include_gypi]
-
-  # GYP defines from the supplemental.gypi files.
-  supp_items = []
-  for supplement in supplemental_files:
-    with open(supplement, 'r') as f:
-      try:
-        file_data = eval(f.read(), {'__builtins__': None}, None)
-      except SyntaxError, e:
-        e.filename = os.path.abspath(supplement)
-        raise
-      variables = file_data.get('variables', [])
-      for v in variables:
-        supp_items += [(v, str(variables[v]))]
-
-  # GYP defines from the environment.
-  env_items = ProcessGypDefinesItems(
-      shlex.split(os.environ.get('GYP_DEFINES', '')))
-
-  # GYP defines from the command line.
-  parser = argparse.ArgumentParser()
-  parser.add_argument('-D', dest='defines', action='append', default=[])
-  cmdline_input_items = parser.parse_known_args()[0].defines
-  cmdline_items = ProcessGypDefinesItems(cmdline_input_items)
-
-  vars_dict = dict(supp_items + env_items + cmdline_items)
-  return vars_dict
-
-
-def GetOutputDirectory():
-  """Returns the output directory that GYP will use."""
-
-  # Handle command line generator flags.
-  parser = argparse.ArgumentParser()
-  parser.add_argument('-G', dest='genflags', default=[], action='append')
-  genflags = parser.parse_known_args()[0].genflags
-
-  # Handle generator flags from the environment.
-  genflags += shlex.split(os.environ.get('GYP_GENERATOR_FLAGS', ''))
-
-  needle = 'output_dir='
-  for item in genflags:
-    if item.startswith(needle):
-      return item[len(needle):]
-
-  return 'out'
-
-
-def additional_include_files(supplemental_files, args=[]):
-  """
-  Returns a list of additional (.gypi) files to include, without duplicating
-  ones that are already specified on the command line. The list of supplemental
-  include files is passed in as an argument.
-  """
-  # Determine the include files specified on the command line.
-  # This doesn't cover all the different option formats you can use,
-  # but it's mainly intended to avoid duplicating flags on the automatic
-  # makefile regeneration which only uses this format.
-  specified_includes = set()
-  for arg in args:
-    if arg.startswith('-I') and len(arg) > 2:
-      specified_includes.add(os.path.realpath(arg[2:]))
-
-  result = []
-  def AddInclude(path):
-    if os.path.realpath(path) not in specified_includes:
-      result.append(path)
-
-  if os.environ.get('GYP_INCLUDE_FIRST') != None:
-    AddInclude(os.path.join(chrome_src, os.environ.get('GYP_INCLUDE_FIRST')))
-
-  # Always include common.gypi.
-  AddInclude(os.path.join(script_dir, 'common.gypi'))
-
-  # Optionally add supplemental .gypi files if present.
-  for supplement in supplemental_files:
-    AddInclude(supplement)
-
-  if os.environ.get('GYP_INCLUDE_LAST') != None:
-    AddInclude(os.path.join(chrome_src, os.environ.get('GYP_INCLUDE_LAST')))
-
-  return result
-
-
-if __name__ == '__main__':
-  # Disabling garbage collection saves about 1 second out of 16 on a Linux
-  # z620 workstation. Since this is a short-lived process it's not a problem to
-  # leak a few cyclyc references in order to spare the CPU cycles for
-  # scanning the heap.
-  import gc
-  gc.disable()
-
-  args = sys.argv[1:]
-
-  use_analyzer = len(args) and args[0] == '--analyzer'
-  if use_analyzer:
-    args.pop(0)
-    os.environ['GYP_GENERATORS'] = 'analyzer'
-    args.append('-Gconfig_path=' + args.pop(0))
-    args.append('-Ganalyzer_output_path=' + args.pop(0))
-
-  if int(os.environ.get('GYP_CHROMIUM_NO_ACTION', 0)):
-    print 'Skipping gyp_chromium due to GYP_CHROMIUM_NO_ACTION env var.'
-    sys.exit(0)
-
-  # Use the Psyco JIT if available.
-  if psyco:
-    psyco.profile()
-    print "Enabled Psyco JIT."
-
-  # Fall back on hermetic python if we happen to get run under cygwin.
-  # TODO(bradnelson): take this out once this issue is fixed:
-  #    http://code.google.com/p/gyp/issues/detail?id=177
-  if sys.platform == 'cygwin':
-    import find_depot_tools
-    depot_tools_path = find_depot_tools.add_depot_tools_to_path()
-    python_dir = sorted(glob.glob(os.path.join(depot_tools_path,
-                                               'python2*_bin')))[-1]
-    env = os.environ.copy()
-    env['PATH'] = python_dir + os.pathsep + env.get('PATH', '')
-    cmd = [os.path.join(python_dir, 'python.exe')] + sys.argv
-    sys.exit(subprocess.call(cmd, env=env))
-
-  # This could give false positives since it doesn't actually do real option
-  # parsing.  Oh well.
-  gyp_file_specified = any(arg.endswith('.gyp') for arg in args)
-
-  gyp_environment.SetEnvironment()
-
-  # If we didn't get a file, check an env var, and then fall back to
-  # assuming 'all.gyp' from the same directory as the script.
-  if not gyp_file_specified:
-    gyp_file = os.environ.get('CHROMIUM_GYP_FILE')
-    if gyp_file:
-      # Note that CHROMIUM_GYP_FILE values can't have backslashes as
-      # path separators even on Windows due to the use of shlex.split().
-      args.extend(shlex.split(gyp_file))
-    else:
-      args.append(os.path.join(script_dir, 'all.gyp'))
-
-  supplemental_includes = GetSupplementalFiles()
-  gyp_vars_dict = GetGypVars(supplemental_includes)
-  # There shouldn't be a circular dependency relationship between .gyp files,
-  # but in Chromium's .gyp files, on non-Mac platforms, circular relationships
-  # currently exist.  The check for circular dependencies is currently
-  # bypassed on other platforms, but is left enabled on iOS, where a violation
-  # of the rule causes Xcode to misbehave badly.
-  # TODO(mark): Find and kill remaining circular dependencies, and remove this
-  # option.  http://crbug.com/35878.
-  # TODO(tc): Fix circular dependencies in ChromiumOS then add linux2 to the
-  # list.
-  if gyp_vars_dict.get('OS') != 'ios':
-    args.append('--no-circular-check')
-
-  # libtool on Mac warns about duplicate basenames in static libraries, so
-  # they're disallowed in general by gyp. We are lax on this point, so disable
-  # this check other than on Mac. GN does not use static libraries as heavily,
-  # so over time this restriction will mostly go away anyway, even on Mac.
-  # https://code.google.com/p/gyp/issues/detail?id=384
-  if sys.platform != 'darwin':
-    args.append('--no-duplicate-basename-check')
-
-  # We explicitly don't support the make gyp generator (crbug.com/348686). Be
-  # nice and fail here, rather than choking in gyp.
-  if re.search(r'(^|,|\s)make($|,|\s)', os.environ.get('GYP_GENERATORS', '')):
-    print 'Error: make gyp generator not supported (check GYP_GENERATORS).'
-    sys.exit(1)
-
-  # We explicitly don't support the native msvs gyp generator. Be nice and
-  # fail here, rather than generating broken projects.
-  if re.search(r'(^|,|\s)msvs($|,|\s)', os.environ.get('GYP_GENERATORS', '')):
-    print 'Error: msvs gyp generator not supported (check GYP_GENERATORS).'
-    print 'Did you mean to use the `msvs-ninja` generator?'
-    sys.exit(1)
-
-  # If CHROMIUM_GYP_SYNTAX_CHECK is set to 1, it will invoke gyp with --check
-  # to enfore syntax checking.
-  syntax_check = os.environ.get('CHROMIUM_GYP_SYNTAX_CHECK')
-  if syntax_check and int(syntax_check):
-    args.append('--check')
-
-  # TODO(dmikurube): Remove these checks and messages after a while.
-  if ('linux_use_tcmalloc' in gyp_vars_dict or
-      'android_use_tcmalloc' in gyp_vars_dict):
-    print '*****************************************************************'
-    print '"linux_use_tcmalloc" and "android_use_tcmalloc" are deprecated!'
-    print '-----------------------------------------------------------------'
-    print 'You specify "linux_use_tcmalloc" or "android_use_tcmalloc" in'
-    print 'your GYP_DEFINES. Please switch them into "use_allocator" now.'
-    print 'See http://crbug.com/345554 for the details.'
-    print '*****************************************************************'
-
-  # Automatically turn on crosscompile support for platforms that need it.
-  # (The Chrome OS build sets CC_host / CC_target which implicitly enables
-  # this mode.)
-  if all(('ninja' in os.environ.get('GYP_GENERATORS', ''),
-          gyp_vars_dict.get('OS') in ['android', 'ios'],
-          'GYP_CROSSCOMPILE' not in os.environ)):
-    os.environ['GYP_CROSSCOMPILE'] = '1'
-  if gyp_vars_dict.get('OS') == 'android':
-    args.append('--check')
-
-  args.extend(
-      ['-I' + i for i in additional_include_files(supplemental_includes, args)])
-
-  args.extend(['-D', 'gyp_output_dir=' + GetOutputDirectory()])
-
-  if not use_analyzer:
-    print 'Updating projects from gyp files...'
-    sys.stdout.flush()
-
-  # Off we go...
-  gyp_rc = gyp.main(args)
-
-  if not use_analyzer:
-    vs2013_runtime_dll_dirs = vs_toolchain.SetEnvironmentAndGetRuntimeDllDirs()
-    if vs2013_runtime_dll_dirs:
-      x64_runtime, x86_runtime = vs2013_runtime_dll_dirs
-      vs_toolchain.CopyVsRuntimeDlls(
-        os.path.join(chrome_src, GetOutputDirectory()),
-        (x86_runtime, x64_runtime))
+# Simple launcher script for gyp_chromium.py.
+# TODO(sbc): This should probably be shell script but for historical
+# reasons (all the python code used to live in this script without a
+# .py extension, and was often run as 'python gyp_chromium') it is
+# currently still python.
 
-  sys.exit(gyp_rc)
+execfile(__file__ + '.py')