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 8import os 9 10SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__)) 11CHROME_SRC = os.path.dirname(SCRIPT_DIR) 12 13 14def 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 64def 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) 69