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| 1 # Copyright 2013 The Chromium 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. | |
| 4 | |
| 5 | |
| 6 import functools | |
| 7 import logging | |
| 8 import os | |
| 9 import shlex | |
| 10 import sys | |
| 11 | |
| 12 | |
| 13 def memoize(default=None): | |
| 14 """This decorator caches the return value of a parameterless pure function""" | |
| 15 def memoizer(func): | |
| 16 val = [] | |
| 17 @functools.wraps(func) | |
| 18 def inner(): | |
| 19 if not val: | |
| 20 ret = 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]) | |
| 24 return val[0] | |
| 25 return inner | |
| 26 return memoizer | |
| 27 | |
| 28 | |
| 29 @memoize() | |
| 30 def IsWindows(): | |
| 31 return sys.platform in ['win32', 'cygwin'] | |
| 32 | |
| 33 | |
| 34 @memoize() | |
| 35 def IsLinux(): | |
| 36 return sys.platform.startswith(('linux', 'freebsd', 'openbsd')) | |
| 37 | |
| 38 | |
| 39 @memoize() | |
| 40 def IsMac(): | |
| 41 return sys.platform == 'darwin' | |
| 42 | |
| 43 | |
| 44 @memoize() | |
| 45 def gyp_defines(): | |
| 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', ''))) | |
| 49 | |
| 50 @memoize() | |
| 51 def gyp_generator_flags(): | |
| 52 """Parses and returns GYP_GENERATOR_FLAGS env var as a dictionary.""" | |
| 53 return dict(arg.split('=', 1) | |
| 54 for arg in shlex.split(os.environ.get('GYP_GENERATOR_FLAGS', ''))) | |
| 55 | |
| 56 @memoize() | |
| 57 def gyp_msvs_version(): | |
| 58 return os.environ.get('GYP_MSVS_VERSION', '') | |
| 59 | |
| 60 @memoize() | |
| 61 def distributor(): | |
| 62 """ | |
| 63 Returns a string which is the distributed build engine in use (if any). | |
| 64 Possible values: 'goma', 'ib', '' | |
| 65 """ | |
| 66 if 'goma' in gyp_defines(): | |
| 67 return 'goma' | |
| 68 elif IsWindows(): | |
| 69 if 'CHROME_HEADLESS' in os.environ: | |
| 70 return 'ib' # use (win and !goma and headless) as approximation of ib | |
| 71 | |
| 72 | |
| 73 @memoize() | |
| 74 def platform(): | |
| 75 """ | |
| 76 Returns a string representing the platform this build is targetted for. | |
| 77 Possible values: 'win', 'mac', 'linux', 'ios', 'android' | |
| 78 """ | |
| 79 if 'OS' in gyp_defines(): | |
| 80 if 'android' in gyp_defines()['OS']: | |
| 81 return 'android' | |
| 82 else: | |
| 83 return gyp_defines()['OS'] | |
| 84 elif IsWindows(): | |
| 85 return 'win' | |
| 86 elif IsLinux(): | |
| 87 return 'linux' | |
| 88 else: | |
| 89 return 'mac' | |
| 90 | |
| 91 | |
| 92 @memoize() | |
| 93 def builder(): | |
| 94 """ | |
| 95 Returns a string representing the build engine (not compiler) to use. | |
| 96 Possible values: 'make', 'ninja', 'xcode', 'msvs', 'scons' | |
| 97 """ | |
| 98 if 'GYP_GENERATORS' in os.environ: | |
| 99 # for simplicity, only support the first explicit generator | |
| 100 generator = os.environ['GYP_GENERATORS'].split(',')[0] | |
| 101 if generator.endswith('-android'): | |
| 102 return generator.split('-')[0] | |
| 103 elif generator.endswith('-ninja'): | |
| 104 return 'ninja' | |
| 105 else: | |
| 106 return generator | |
| 107 else: | |
| 108 if platform() == 'android': | |
| 109 # Good enough for now? Do any android bots use make? | |
| 110 return 'ninja' | |
| 111 elif platform() == 'ios': | |
| 112 return 'xcode' | |
| 113 elif IsWindows(): | |
| 114 return 'ninja' | |
| 115 elif IsLinux(): | |
| 116 return 'ninja' | |
| 117 elif IsMac(): | |
| 118 return 'ninja' | |
| 119 else: | |
| 120 assert False, 'Don\'t know what builder we\'re using!' | |
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Chromium Code Reviews
Issue 2392643003:
Removes files from //build that we don't need (Closed)
