build/mac/find_sdk.py

   1 #!/usr/bin/env python
   2 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
   3 # Use of this source code is governed by a BSD-style license that can be
   4 # found in the LICENSE file.
   5
   6 import os
   7 import re
   8 import subprocess
   9 import sys
  10
  11 """Prints the lowest locally available SDK version greater than or equal to a
  12 given minimum sdk version to standard output.
  13
  14 Usage:
  15   python find_sdk.py 10.6  # Ignores SDKs < 10.6
  16 """
  17
  18 from optparse import OptionParser
  19
  20
  21 def parse_version(version_str):
  22   """'10.6' => [10, 6]"""
  23   return map(int, re.findall(r'(\d+)', version_str))
  24
  25
  26 def main():
  27   parser = OptionParser()
  28   parser.add_option("--verify",
  29                     action="store_true", dest="verify", default=False,
  30                     help="return the sdk argument and warn if it doesn't exist")
  31   parser.add_option("--sdk_path",
  32                     action="store", type="string", dest="sdk_path", default="",
  33                     help="user-specified SDK path; bypasses verification")
  34   (options, args) = parser.parse_args()
  35   min_sdk_version = args[0]
  36
  37   job = subprocess.Popen(['xcode-select', '-print-path'],
  38                          stdout=subprocess.PIPE,
  39                          stderr=subprocess.STDOUT)
  40   out, err = job.communicate()
  41   if job.returncode != 0:
  42     print >>sys.stderr, out
  43     print >>sys.stderr, err
  44     raise Exception(('Error %d running xcode-select, you might have to run '
  45       '|sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer| '
  46       'if you are using Xcode 4.') % job.returncode)
  47   # The Developer folder moved in Xcode 4.3.
  48   xcode43_sdk_path = os.path.join(
  49       out.rstrip(), 'Platforms/MacOSX.platform/Developer/SDKs')
  50   if os.path.isdir(xcode43_sdk_path):
  51     sdk_dir = xcode43_sdk_path
  52   else:
  53     sdk_dir = os.path.join(out.rstrip(), 'SDKs')
  54   sdks = [re.findall('^MacOSX(10\.\d+)\.sdk$', s) for s in os.listdir(sdk_dir)]
  55   sdks = [s[0] for s in sdks if s]  # [['10.5'], ['10.6']] => ['10.5', '10.6']
  56   sdks = [s for s in sdks  # ['10.5', '10.6'] => ['10.6']
  57           if parse_version(s) >= parse_version(min_sdk_version)]
  58   if not sdks:
  59     raise Exception('No %s+ SDK found' % min_sdk_version)
  60   best_sdk = sorted(sdks, key=parse_version)[0]
  61
  62   if options.verify and best_sdk != min_sdk_version and not options.sdk_path:
  63     print >>sys.stderr, ''
  64     print >>sys.stderr, '                                           vvvvvvv'
  65     print >>sys.stderr, ''
  66     print >>sys.stderr, \
  67         'This build requires the %s SDK, but it was not found on your system.' \
  68         % min_sdk_version
  69     print >>sys.stderr, \
  70         'Either install it, or explicitly set mac_sdk in your GYP_DEFINES.'
  71     print >>sys.stderr, ''
  72     print >>sys.stderr, '                                           ^^^^^^^'
  73     print >>sys.stderr, ''
  74     return min_sdk_version
  75
  76   return best_sdk
  77
  78
  79 if __name__ == '__main__':
  80   if sys.platform != 'darwin':
  81     raise Exception("This script only runs on Mac")
  82   print main()