build/gyp_environment.py

   1 # Copyright 2014 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 Sets up various automatic gyp environment variables. These are used by
   7 gyp_chromium and landmines.py which run at different stages of runhooks. To
   8 make sure settings are consistent between them, all setup should happen here.
   9 """
  10
  11 import gyp_helper
  12 import os
  13 import sys
  14 import vs_toolchain
  15
  16 def SetEnvironment():
  17   """Sets defaults for GYP_* variables."""
  18   gyp_helper.apply_chromium_gyp_env()
  19
  20   # Default to ninja on linux and windows, but only if no generator has
  21   # explicitly been set.
  22   # Also default to ninja on mac, but only when not building chrome/ios.
  23   # . -f / --format has precedence over the env var, no need to check for it
  24   # . set the env var only if it hasn't been set yet
  25   # . chromium.gyp_env has been applied to os.environ at this point already
  26   if sys.platform.startswith(('linux', 'win', 'freebsd')) and \
  27       not os.environ.get('GYP_GENERATORS'):
  28     os.environ['GYP_GENERATORS'] = 'ninja'
  29   elif sys.platform == 'darwin' and not os.environ.get('GYP_GENERATORS') and \
  30       not 'OS=ios' in os.environ.get('GYP_DEFINES', []):
  31     os.environ['GYP_GENERATORS'] = 'ninja'
  32
  33   vs_toolchain.SetEnvironmentAndGetRuntimeDllDirs()