--- /dev/null
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file delta_common.h
+/// \brief Common stuff for Delta encoder and decoder
+//
+// Author: Lasse Collin
+//
+// This file has been put into the public domain.
+// You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_DELTA_COMMON_H
+#define LZMA_DELTA_COMMON_H
+
+#include "common.h"
+
+extern uint64_t lzma_delta_coder_memusage(const void *options);
+
+#endif