Fix compilation on MinGW

src/platform-win32.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 40 matching lines @@
 // Require Windows 2000 or higher (this is required for the IsDebuggerPresent
 // function to be present).
 #ifndef _WIN32_WINNT
 #define _WIN32_WINNT 0x500
 #endif
 
 #include <windows.h>
 
 #include <time.h>  // For LocalOffset() implementation.
 #include <mmsystem.h>  // For timeGetTime().
+#ifdef __MINGW32__
+// Require Windows XP or higher when compiling with MinGW. This is for MinGW
+// header files to expose getaddrinfo.
+#undef _WIN32_WINNT
+#define _WIN32_WINNT 0x501
+#endif  // __MINGW32__
 #ifndef __MINGW32__
 #include <dbghelp.h>  // For SymLoadModule64 and al.
 #endif  // __MINGW32__
 #include <limits.h>  // For INT_MAX and al.
 #include <tlhelp32.h>  // For Module32First and al.
 
 // These additional WIN32 includes have to be right here as the #undef's below
 // makes it impossible to have them elsewhere.
 #include <winsock2.h>
 #include <ws2tcpip.h>
@@ skipping 1792 matching lines @@
 
   // Release the thread handles
   CloseHandle(data_->sampler_thread_);
   CloseHandle(data_->profiled_thread_);
 }
 
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 } }  // namespace v8::internal