1 # Copyright 2014 the V8 project authors. All rights reserved.
2 # Use of this source code is governed by a BSD-style license that can be
3 # found in the LICENSE file.
13 def memoize(default=None):
14 """This decorator caches the return value of a parameterless pure function"""
17 @functools.wraps(func)
21 val.append(ret if ret is not None else default)
22 if logging.getLogger().isEnabledFor(logging.INFO):
23 print '%s -> %r' % (func.__name__, val[0])
31 return sys.platform in ['win32', 'cygwin']
36 return sys.platform.startswith(('linux', 'freebsd'))
41 return sys.platform == 'darwin'
46 """Parses and returns GYP_DEFINES env var as a dictionary."""
47 return dict(arg.split('=', 1)
48 for arg in shlex.split(os.environ.get('GYP_DEFINES', '')))
52 def gyp_generator_flags():
53 """Parses and returns GYP_GENERATOR_FLAGS env var as a dictionary."""
54 return dict(arg.split('=', 1)
55 for arg in shlex.split(os.environ.get('GYP_GENERATOR_FLAGS', '')))
59 def gyp_msvs_version():
60 return os.environ.get('GYP_MSVS_VERSION', '')
66 Returns a string which is the distributed build engine in use (if any).
67 Possible values: 'goma', 'ib', ''
69 if 'goma' in gyp_defines():
72 if 'CHROME_HEADLESS' in os.environ:
73 return 'ib' # use (win and !goma and headless) as approximation of ib
79 Returns a string representing the platform this build is targetted for.
80 Possible values: 'win', 'mac', 'linux', 'ios', 'android'
82 if 'OS' in gyp_defines():
83 if 'android' in gyp_defines()['OS']:
86 return gyp_defines()['OS']
98 Returns a string representing the build engine (not compiler) to use.
99 Possible values: 'make', 'ninja', 'xcode', 'msvs', 'scons'
101 if 'GYP_GENERATORS' in os.environ:
102 # for simplicity, only support the first explicit generator
103 generator = os.environ['GYP_GENERATORS'].split(',')[0]
104 if generator.endswith('-android'):
105 return generator.split('-')[0]
106 elif generator.endswith('-ninja'):
111 if platform() == 'android':
112 # Good enough for now? Do any android bots use make?
114 elif platform() == 'ios':
123 assert False, 'Don\'t know what builder we\'re using!'