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 'CHROMIUM_GYP_FILE', 29 'CHROMIUM_GYP_SYNTAX_CHECK', 30 'CXX', 31 'CXX_wrapper', 32 'GYP_DEFINES', 33 'GYP_GENERATOR_FLAGS', 34 'GYP_CROSSCOMPILE', 35 'GYP_GENERATOR_OUTPUT', 36 'GYP_GENERATORS', 37 'GYP_MSVS_VERSION', 38 ) 39 for var in supported_vars: 40 file_val = file_data.get(var) 41 if file_val: 42 if var in os.environ: 43 print 'INFO: Environment value for "%s" overrides value in %s.' % ( 44 var, os.path.abspath(file_path) 45 ) 46 else: 47 os.environ[var] = file_val 48 49 50 def apply_chromium_gyp_env(): 51 if 'SKIP_CHROMIUM_GYP_ENV' not in os.environ: 52 # Update the environment based on chromium.gyp_env 53 path = os.path.join(os.path.dirname(CHROME_SRC), 'chromium.gyp_env') 54 apply_gyp_environment_from_file(path) 55
