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 """Prints the lowest locally available SDK version greater than or equal to a
   7 given minimum sdk version to standard output.
   8
   9 Usage:
  10   python find_sdk.py 10.6  # Ignores SDKs < 10.6
  11 """
  12
  13 import os
  14 import re
  15 import subprocess
  16 import sys
  17
  18
  19 from optparse import OptionParser
  20
  21
  22 def parse_version(version_str):
  23   """'10.6' => [10, 6]"""
  24   return map(int, re.findall(r'(\d+)', version_str))
  25
  26
  27 def main():
  28   parser = OptionParser()
  29   parser.add_option("--verify",
  30                     action="store_true", dest="verify", default=False,
  31                     help="return the sdk argument and warn if it doesn't exist")
  32   parser.add_option("--sdk_path",
  33                     action="store", type="string", dest="sdk_path", default="",
  34                     help="user-specified SDK path; bypasses verification")
  35   parser.add_option("--print_sdk_path",
  36                     action="store_true", dest="print_sdk_path", default=False,
  37                     help="Additionaly print the path the SDK (appears first).")
  38   (options, args) = parser.parse_args()
  39   min_sdk_version = args[0]
  40
  41   job = subprocess.Popen(['xcode-select', '-print-path'],
  42                          stdout=subprocess.PIPE,
  43                          stderr=subprocess.STDOUT)
  44   out, err = job.communicate()
  45   if job.returncode != 0:
  46     print >> sys.stderr, out
  47     print >> sys.stderr, err
  48     raise Exception(('Error %d running xcode-select, you might have to run '
  49       '|sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer| '
  50       'if you are using Xcode 4.') % job.returncode)
  51   # The Developer folder moved in Xcode 4.3.
  52   xcode43_sdk_path = os.path.join(
  53       out.rstrip(), 'Platforms/MacOSX.platform/Developer/SDKs')
  54   if os.path.isdir(xcode43_sdk_path):
  55     sdk_dir = xcode43_sdk_path
  56   else:
  57     sdk_dir = os.path.join(out.rstrip(), 'SDKs')
  58   sdks = [re.findall('^MacOSX(10\.\d+)\.sdk$', s) for s in os.listdir(sdk_dir)]
  59   sdks = [s[0] for s in sdks if s]  # [['10.5'], ['10.6']] => ['10.5', '10.6']
  60   sdks = [s for s in sdks  # ['10.5', '10.6'] => ['10.6']
  61           if parse_version(s) >= parse_version(min_sdk_version)]
  62   if not sdks:
  63     raise Exception('No %s+ SDK found' % min_sdk_version)
  64   best_sdk = sorted(sdks, key=parse_version)[0]
  65
  66   if options.verify and best_sdk != min_sdk_version and not options.sdk_path:
  67     print >> sys.stderr, ''
  68     print >> sys.stderr, '                                           vvvvvvv'
  69     print >> sys.stderr, ''
  70     print >> sys.stderr, \
  71         'This build requires the %s SDK, but it was not found on your system.' \
  72         % min_sdk_version
  73     print >> sys.stderr, \
  74         'Either install it, or explicitly set mac_sdk in your GYP_DEFINES.'
  75     print >> sys.stderr, ''
  76     print >> sys.stderr, '                                           ^^^^^^^'
  77     print >> sys.stderr, ''
  78     return min_sdk_version
  79
  80   if options.print_sdk_path:
  81     print subprocess.check_output(['xcodebuild', '-version', '-sdk',
  82                                    'macosx' + best_sdk, 'Path']).strip()
  83
  84   return best_sdk
  85
  86
  87 if __name__ == '__main__':
  88   if sys.platform != 'darwin':
  89     raise Exception("This script only runs on Mac")
  90   print main()