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
7given minimum sdk version to standard output.
8
9Usage:
10  python find_sdk.py 10.6  # Ignores SDKs < 10.6
11"""
12
13import os
14import re
15import subprocess
16import sys
17
18
19from optparse import OptionParser
20
21
22def parse_version(version_str):
23  """'10.6' => [10, 6]"""
24  return map(int, re.findall(r'(\d+)', version_str))
25
26
27def 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
87if __name__ == '__main__':
88  if sys.platform != 'darwin':
89    raise Exception("This script only runs on Mac")
90  print main()
91