Begin work on ios secure sockets

runtime/platform/globals.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef PLATFORM_GLOBALS_H_
 #define PLATFORM_GLOBALS_H_
 
 // __STDC_FORMAT_MACROS has to be defined before including <inttypes.h> to
 // enable platform independent printf format specifiers.
 #ifndef __STDC_FORMAT_MACROS
@@ skipping 84 matching lines @@
 #define TARGET_OS_LINUX 1
 
 #elif defined(__APPLE__)
 
 // Define the flavor of Mac OS we are running on.
 #include <TargetConditionals.h>
 // TODO(iposva): Rename TARGET_OS_MACOS to TARGET_OS_MAC to inherit
 // the value defined in TargetConditionals.h
 #define TARGET_OS_MACOS 1
 #if TARGET_OS_IPHONE
+// Test for this #define by saying '#if TARGET_OS_IOS' rather than the usual
+// '#if defined(TARGET_OS_IOS)'. TARGET_OS_IOS is defined to be 0 in
+// XCode >= 7.0. See Issue #24453.
 #define TARGET_OS_IOS 1
 #endif
 
 #elif defined(_WIN32)
 
 // Windows, both 32- and 64-bit, regardless of the check for _WIN32.
 #define TARGET_OS_WINDOWS 1
 
 #else
 #error Automatic target os detection failed.
@@ skipping 528 matching lines @@
 
 #if defined(_WIN32)
 #define STDIN_FILENO 0
 #define STDOUT_FILENO 1
 #define STDERR_FILENO 2
 #endif
 
 }  // namespace dart
 
 #endif  // PLATFORM_GLOBALS_H_