Merge V8 5.3.332.45. DO NOT MERGE
Test: Manual
FPIIM-449
Change-Id: Id3254828b068abdea3cb10442e0172a8c9a98e03
(cherry picked from commit 13e2dadd00298019ed862f2b2fc5068bba730bcf)
diff --git a/build/landmine_utils.py b/build/landmine_utils.py
new file mode 100644
index 0000000..6d18b6d
--- /dev/null
+++ b/build/landmine_utils.py
@@ -0,0 +1,120 @@
+# Copyright 2013 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.
+
+
+import functools
+import logging
+import os
+import shlex
+import sys
+
+
+def memoize(default=None):
+ """This decorator caches the return value of a parameterless pure function"""
+ def memoizer(func):
+ val = []
+ @functools.wraps(func)
+ def inner():
+ if not val:
+ ret = func()
+ val.append(ret if ret is not None else default)
+ if logging.getLogger().isEnabledFor(logging.INFO):
+ print '%s -> %r' % (func.__name__, val[0])
+ return val[0]
+ return inner
+ return memoizer
+
+
+@memoize()
+def IsWindows():
+ return sys.platform in ['win32', 'cygwin']
+
+
+@memoize()
+def IsLinux():
+ return sys.platform.startswith(('linux', 'freebsd', 'openbsd'))
+
+
+@memoize()
+def IsMac():
+ return sys.platform == 'darwin'
+
+
+@memoize()
+def gyp_defines():
+ """Parses and returns GYP_DEFINES env var as a dictionary."""
+ return dict(arg.split('=', 1)
+ for arg in shlex.split(os.environ.get('GYP_DEFINES', '')))
+
+@memoize()
+def gyp_generator_flags():
+ """Parses and returns GYP_GENERATOR_FLAGS env var as a dictionary."""
+ return dict(arg.split('=', 1)
+ for arg in shlex.split(os.environ.get('GYP_GENERATOR_FLAGS', '')))
+
+@memoize()
+def gyp_msvs_version():
+ return os.environ.get('GYP_MSVS_VERSION', '')
+
+@memoize()
+def distributor():
+ """
+ Returns a string which is the distributed build engine in use (if any).
+ Possible values: 'goma', 'ib', ''
+ """
+ if 'goma' in gyp_defines():
+ return 'goma'
+ elif IsWindows():
+ if 'CHROME_HEADLESS' in os.environ:
+ return 'ib' # use (win and !goma and headless) as approximation of ib
+
+
+@memoize()
+def platform():
+ """
+ Returns a string representing the platform this build is targetted for.
+ Possible values: 'win', 'mac', 'linux', 'ios', 'android'
+ """
+ if 'OS' in gyp_defines():
+ if 'android' in gyp_defines()['OS']:
+ return 'android'
+ else:
+ return gyp_defines()['OS']
+ elif IsWindows():
+ return 'win'
+ elif IsLinux():
+ return 'linux'
+ else:
+ return 'mac'
+
+
+@memoize()
+def builder():
+ """
+ Returns a string representing the build engine (not compiler) to use.
+ Possible values: 'make', 'ninja', 'xcode', 'msvs', 'scons'
+ """
+ if 'GYP_GENERATORS' in os.environ:
+ # for simplicity, only support the first explicit generator
+ generator = os.environ['GYP_GENERATORS'].split(',')[0]
+ if generator.endswith('-android'):
+ return generator.split('-')[0]
+ elif generator.endswith('-ninja'):
+ return 'ninja'
+ else:
+ return generator
+ else:
+ if platform() == 'android':
+ # Good enough for now? Do any android bots use make?
+ return 'ninja'
+ elif platform() == 'ios':
+ return 'xcode'
+ elif IsWindows():
+ return 'ninja'
+ elif IsLinux():
+ return 'ninja'
+ elif IsMac():
+ return 'ninja'
+ else:
+ assert False, 'Don\'t know what builder we\'re using!'