Fix issue 7005:

tools/create_sdk.py

Index: tools/create_sdk.py
===================================================================
--- tools/create_sdk.py	(revision 15499)
+++ tools/create_sdk.py	(working copy)
@@ -59,6 +59,8 @@
 import tempfile
 import utils
 
+HOST_OS = utils.GuessOS()
+
 # TODO(dgrove): Only import modules following Google style guide.
 from os.path import basename, dirname, join, realpath, exists, isdir
 
@@ -85,15 +87,14 @@
 # TODO(zundel): this excludes the analyzer from the sdk build until builders
 # have all prerequisite software installed.  Also update dart.gyp.
 def ShouldCopyAnalyzer():
-  os = utils.GuessOS()
-  return os == 'linux' or os == 'macos'
+  return HOST_OS == 'linux' or HOST_OS == 'macos'
 
 
 def CopyShellScript(src_file, dest_dir):
   '''Copies a shell/batch script to the given destination directory. Handles
      using the appropriate platform-specific file extension.'''
   file_extension = ''
-  if utils.GuessOS() == 'win32':
+  if HOST_OS == 'win32':
     file_extension = '.bat'
 
   src = src_file + file_extension
@@ -149,7 +150,7 @@
   build_dir = os.path.dirname(argv[1])
   dart_file_extension = ''
   analyzer_file_extension = ''
-  if utils.GuessOS() == 'win32':
+  if HOST_OS == 'win32':
     dart_file_extension = '.exe'
     analyzer_file_extension = '.bat'  # TODO(zundel): test on Windows
     dart_import_lib_src = join(HOME, build_dir, 'dart.lib')
@@ -159,8 +160,11 @@
   dart_dest_binary = join(BIN, 'dart' + dart_file_extension)
   copyfile(dart_src_binary, dart_dest_binary)
   copymode(dart_src_binary, dart_dest_binary)
-  if utils.GuessOS() != 'win32':
+  # Strip the binaries on platforms where that is supported.
+  if HOST_OS == 'linux':
     subprocess.call(['strip', dart_dest_binary])
+  elif HOST_OS == 'macos':
+    subprocess.call(['strip', '-x', dart_dest_binary])
 
   if ShouldCopyAnalyzer():
     # Copy analyzer into sdk/bin
@@ -249,7 +253,7 @@
            ignore=ignore_patterns('.svn', 'sdk'))
 
   # Copy in 7zip for Windows.
-  if utils.GuessOS() == 'win32':
+  if HOST_OS == 'win32':
     copytree(join(HOME, 'third_party', '7zip'),
              join(join(UTIL, 'pub'), '7zip'),
              ignore=ignore_patterns('.svn'))
@@ -263,7 +267,7 @@
 
   # Copy in cURL on all operating systems, since we need the certificates file
   # even outside Windows. Leave out the EXE on non-Windows systems, though.
-  curl_ignore_patterns = ignore_patterns('.svn') if utils.GuessOS() == 'win32' \
+  curl_ignore_patterns = ignore_patterns('.svn') if HOST_OS == 'win32' \
       else ignore_patterns('.svn', '*.exe')
   copytree(join(HOME, 'third_party', 'curl'),
            join(join(UTIL, 'pub'), 'curl'),