1# Copyright 2015 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. 4 5""" 6Sets up various automatic gyp environment variables. These are used by 7gyp_v8 and landmines.py which run at different stages of runhooks. To 8make sure settings are consistent between them, all setup should happen here. 9""" 10 11import os 12import sys 13import vs_toolchain 14 15SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__)) 16V8_ROOT = os.path.abspath(os.path.join(SCRIPT_DIR, os.pardir)) 17 18 19def apply_gyp_environment(file_path=None): 20 """ 21 Reads in a *.gyp_env file and applies the valid keys to os.environ. 22 """ 23 if not file_path or not os.path.exists(file_path): 24 return 25 file_contents = open(file_path).read() 26 try: 27 file_data = eval(file_contents, {'__builtins__': None}, None) 28 except SyntaxError, e: 29 e.filename = os.path.abspath(file_path) 30 raise 31 supported_vars = ( 'V8_GYP_FILE', 32 'V8_GYP_SYNTAX_CHECK', 33 'GYP_DEFINES', 34 'GYP_GENERATORS', 35 'GYP_GENERATOR_FLAGS', 36 'GYP_GENERATOR_OUTPUT', ) 37 for var in supported_vars: 38 val = file_data.get(var) 39 if val: 40 if var in os.environ: 41 print 'INFO: Environment value for "%s" overrides value in %s.' % ( 42 var, os.path.abspath(file_path) 43 ) 44 else: 45 os.environ[var] = val 46 47 48def set_environment(): 49 """Sets defaults for GYP_* variables.""" 50 51 if 'SKIP_V8_GYP_ENV' not in os.environ: 52 # Update the environment based on v8.gyp_env 53 gyp_env_path = os.path.join(os.path.dirname(V8_ROOT), 'v8.gyp_env') 54 apply_gyp_environment(gyp_env_path) 55 56 if not os.environ.get('GYP_GENERATORS'): 57 # Default to ninja on all platforms. 58 os.environ['GYP_GENERATORS'] = 'ninja' 59 60 vs_toolchain.SetEnvironmentAndGetRuntimeDllDirs() 61