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1 # Copyright (c) 2012 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 # This file helps gyp_chromium and landmines correctly set up the gyp | |
6 # environment from chromium.gyp_env on disk | |
7 | |
8 import os | |
9 | |
10 SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__)) | |
11 CHROME_SRC = os.path.dirname(SCRIPT_DIR) | |
12 | |
13 | |
14 def apply_gyp_environment_from_file(file_path): | |
15 """Reads in a *.gyp_env file and applies the valid keys to os.environ.""" | |
16 if not os.path.exists(file_path): | |
17 return | |
18 with open(file_path, 'rU') as f: | |
19 file_contents = f.read() | |
20 try: | |
21 file_data = eval(file_contents, {'__builtins__': None}, None) | |
22 except SyntaxError, e: | |
23 e.filename = os.path.abspath(file_path) | |
24 raise | |
25 supported_vars = ( | |
26 'CC', | |
27 'CC_wrapper', | |
28 'CC.host_wrapper', | |
29 'CHROMIUM_GYP_FILE', | |
30 'CHROMIUM_GYP_SYNTAX_CHECK', | |
31 'CXX', | |
32 'CXX_wrapper', | |
33 'CXX.host_wrapper', | |
34 'GYP_DEFINES', | |
35 'GYP_GENERATOR_FLAGS', | |
36 'GYP_CROSSCOMPILE', | |
37 'GYP_GENERATOR_OUTPUT', | |
38 'GYP_GENERATORS', | |
39 'GYP_INCLUDE_FIRST', | |
40 'GYP_INCLUDE_LAST', | |
41 'GYP_MSVS_VERSION', | |
42 ) | |
43 for var in supported_vars: | |
44 file_val = file_data.get(var) | |
45 if file_val: | |
46 if var in os.environ: | |
47 behavior = 'replaces' | |
48 if var == 'GYP_DEFINES': | |
49 result = file_val + ' ' + os.environ[var] | |
50 behavior = 'merges with, and individual components override,' | |
51 else: | |
52 result = os.environ[var] | |
53 print 'INFO: Environment value for "%s" %s value in %s' % ( | |
54 var, behavior, os.path.abspath(file_path) | |
55 ) | |
56 string_padding = max(len(var), len(file_path), len('result')) | |
57 print ' %s: %s' % (var.rjust(string_padding), os.environ[var]) | |
58 print ' %s: %s' % (file_path.rjust(string_padding), file_val) | |
59 os.environ[var] = result | |
60 else: | |
61 os.environ[var] = file_val | |
62 | |
63 | |
64 def apply_chromium_gyp_env(): | |
65 if 'SKIP_CHROMIUM_GYP_ENV' not in os.environ: | |
66 # Update the environment based on chromium.gyp_env | |
67 path = os.path.join(os.path.dirname(CHROME_SRC), 'chromium.gyp_env') | |
68 apply_gyp_environment_from_file(path) | |
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