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diff --git a/src/microhttpd/mhd_compat.h b/src/microhttpd/mhd_compat.h
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+/*
+  This file is part of libmicrohttpd
+  Copyright (C) 2014-2016 Karlson2k (Evgeny Grin)
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+/**
+ * @file microhttpd/mhd_compat.h
+ * @brief  Header for platform missing functions.
+ * @author Karlson2k (Evgeny Grin)
+ *
+ * Provides compatibility for platforms with some missing
+ * functionality.
+ * Any functions can be implemented as macro on some platforms
+ * unless explicitly marked otherwise.
+ * Any function argument can be skipped in macro, so avoid
+ * variable modification in function parameters.
+ */
+
+#ifndef MHD_COMPAT_H
+#define MHD_COMPAT_H 1
+
+#include "mhd_options.h"
+
+/* Platform-independent snprintf name */
+#if defined(HAVE_SNPRINTF)
+#define MHD_snprintf_ snprintf
+#else  /* ! HAVE_SNPRINTF */
+#if defined(_WIN32)
+/* Emulate snprintf function on W32 */
+int W32_snprintf(char *__restrict s, size_t n, const char *__restrict format, ...);
+#define MHD_snprintf_ W32_snprintf
+#else  /* ! _WIN32*/
+#error Your platform does not support snprintf() and MHD does not know how to emulate it on your platform.
+#endif /* ! _WIN32*/
+#endif /* ! HAVE_SNPRINTF */
+
+#if !defined(_WIN32) || defined(__CYGWIN__)
+#define MHD_random_() random()
+#else  /* _WIN32 && !__CYGWIN__ */
+#define MHD_random_() MHD_W32_random_()
+
+/**
+ * Generate 31-bit pseudo random number.
+ * Function initialize itself at first call to current time.
+ * @return 31-bit pseudo random number.
+ */
+int MHD_W32_random_(void);
+#endif /* _WIN32 && !__CYGWIN__ */
+
+
+
+#endif /* MHD_COMPAT_H */