michael@0: #!/usr/bin/env python
michael@0: # Copyright (c) 2012 The Chromium Authors. All rights reserved.
michael@0: # Use of this source code is governed by a BSD-style license that can be
michael@0: # found in the LICENSE file.
michael@0: 
michael@0: import os
michael@0: import re
michael@0: import subprocess
michael@0: import sys
michael@0: 
michael@0: """Prints the lowest locally available SDK version greater than or equal to a
michael@0: given minimum sdk version to standard output.
michael@0: 
michael@0: Usage:
michael@0:   python find_sdk.py 10.6  # Ignores SDKs < 10.6
michael@0: """
michael@0: 
michael@0: from optparse import OptionParser
michael@0: 
michael@0: 
michael@0: def parse_version(version_str):
michael@0:   """'10.6' => [10, 6]"""
michael@0:   return map(int, re.findall(r'(\d+)', version_str))
michael@0: 
michael@0: 
michael@0: def main():
michael@0:   parser = OptionParser()
michael@0:   parser.add_option("--verify",
michael@0:                     action="store_true", dest="verify", default=False,
michael@0:                     help="return the sdk argument and warn if it doesn't exist")
michael@0:   parser.add_option("--sdk_path",
michael@0:                     action="store", type="string", dest="sdk_path", default="",
michael@0:                     help="user-specified SDK path; bypasses verification")
michael@0:   (options, args) = parser.parse_args()
michael@0:   min_sdk_version = args[0]
michael@0: 
michael@0:   if sys.platform == 'darwin':
michael@0:     job = subprocess.Popen(['xcode-select', '-print-path'],
michael@0:                            stdout=subprocess.PIPE,
michael@0:                            stderr=subprocess.STDOUT)
michael@0:     out, err = job.communicate()
michael@0:     if job.returncode != 0:
michael@0:       print >>sys.stderr, out
michael@0:       print >>sys.stderr, err
michael@0:       raise Exception(('Error %d running xcode-select, you might have to run '
michael@0:                        '|sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer| '
michael@0:                        'if you are using Xcode 4.') % job.returncode)
michael@0:     # The Developer folder moved in Xcode 4.3.
michael@0:     xcode43_sdk_path = os.path.join(
michael@0:       out.rstrip(), 'Platforms/MacOSX.platform/Developer/SDKs')
michael@0:     if os.path.isdir(xcode43_sdk_path):
michael@0:       sdk_dir = xcode43_sdk_path
michael@0:     else:
michael@0:       sdk_dir = os.path.join(out.rstrip(), 'SDKs')
michael@0:     sdks = [re.findall('^MacOSX(10\.\d+)\.sdk$', s) for s in os.listdir(sdk_dir)]
michael@0:     sdks = [s[0] for s in sdks if s]  # [['10.5'], ['10.6']] => ['10.5', '10.6']
michael@0:     sdks = [s for s in sdks  # ['10.5', '10.6'] => ['10.6']
michael@0:             if parse_version(s) >= parse_version(min_sdk_version)]
michael@0:     if not sdks:
michael@0:       raise Exception('No %s+ SDK found' % min_sdk_version)
michael@0:     best_sdk = sorted(sdks, key=parse_version)[0]
michael@0:   else:
michael@0:     best_sdk = ""
michael@0: 
michael@0:   if options.verify and best_sdk != min_sdk_version and not options.sdk_path:
michael@0:     print >>sys.stderr, ''
michael@0:     print >>sys.stderr, '                                           vvvvvvv'
michael@0:     print >>sys.stderr, ''
michael@0:     print >>sys.stderr, \
michael@0:         'This build requires the %s SDK, but it was not found on your system.' \
michael@0:         % min_sdk_version
michael@0:     print >>sys.stderr, \
michael@0:         'Either install it, or explicitly set mac_sdk in your GYP_DEFINES.'
michael@0:     print >>sys.stderr, ''
michael@0:     print >>sys.stderr, '                                           ^^^^^^^'
michael@0:     print >>sys.stderr, ''
michael@0:     return min_sdk_version
michael@0: 
michael@0:   return best_sdk
michael@0: 
michael@0: 
michael@0: if __name__ == '__main__':
michael@0:   print main()