Adds further ext deps as-is binaries copies from customers env.

external/tmsif/include/dds/ddsrt/mh3.h

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+// Copyright(c) 2006 to 2020 ZettaScale Technology and others
+//
+// This program and the accompanying materials are made available under the
+// terms of the Eclipse Public License v. 2.0 which is available at
+// http://www.eclipse.org/legal/epl-2.0, or the Eclipse Distribution License
+// v. 1.0 which is available at
+// http://www.eclipse.org/org/documents/edl-v10.php.
+//
+// SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
+
+#ifndef DDSRT_MH3_H
+#define DDSRT_MH3_H
+
+/** @file mh3.h
+ * The Murmur hash is designed to be fast and is intended for use in hash based lookups.
+ * It is not suitable for cryptographic purposes.
+ */
+
+#include <stdint.h>
+#include <stddef.h>
+
+#include "dds/export.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/**
+ * @brief Generate a 32-bit hash
+ * 
+ * @param[in] key pointer to key from which to compute the hash
+ * @param[in] len size of the key in bytes
+ * @param[in] seed a 32-bit seed to use for computing the hash
+ * @return the hash
+ */
+DDS_EXPORT uint32_t
+ddsrt_mh3(
+  const void *key,
+  size_t len,
+  uint32_t seed);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* DDSRT_MH3_H */