Math Processor Unit Library

diff --git a/mpu/mpu-symbols.h b/mpu/mpu-symbols.h
new file mode 100644
index 0000000..5dfa972
--- /dev/null
+++ b/mpu/mpu-symbols.h
@@ -0,0 +1,66 @@
+
+/***************************************************************
+  __MPU_SYMBOLS.H
+
+       This file contains declarations of interface for define
+       WEAK, ALIAS symbols in object files.
+
+       PART OF : MPU - library .
+
+       USAGE   : Internal only .
+
+       NOTE    : Include "libmpu.h" before this FILE .
+
+       Copyright (C) 2000 - 2024  by Andrew V.Kosteltsev.
+       All Rights Reserved.
+ ***************************************************************/
+
+#ifndef   __MPU_SYMBOLS_H
+#define   __MPU_SYMBOLS_H
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+#ifndef __ASSEMBLER__
+
+#define __mpu_strong_alias( name, symbol ) \
+  extern __typeof(name) symbol __attribute__ ((alias( #name )))
+
+#if defined( HAVE_WEAK_SYMBOLS ) && !defined( __CYGWIN__ )
+/*********************************************************
+  HAVE_WEAK_SYMBOLS:
+ */
+#define __mpu_weak_alias( name, symbol ) \
+  extern __typeof(name) symbol __attribute__ ((weak, alias( #name )))
+
+#define __MPU_WEAK   1
+
+#else  /* HAVE_WEAK_SYMBOLS */
+/*********************************************************
+  don't HAVE_WEAK_SYMBOLS (for example, in Cygwin):
+ */
+#define __mpu_weak_alias( name, symbol ) \
+           __mpu_strong_alias( name, symbol )
+
+#define __MPU_WEAK   0
+
+#endif /* HAVE_WEAK_SYMBOLS */
+
+#endif /* __ASSEMBLER__ */
+
+
+#if defined( SHARED ) && defined( HAVE_HIDDEN_VISIBILITY_ATTRIBUTE )
+#define __mpu_hidden_decl(name) \
+  extern __typeof (name) __attribute__ ((visibility ("hidden"))) name
+#else
+#define __mpu_hidden_decl(name)
+#endif
+
+
+#ifdef  __cplusplus
+}   /* ... extern "C" */
+#endif
+
+#endif /* __MPU_SYMBOLS_H */