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/***************************************************************
__MPU_SYMBOLS.H
This file contains declarations of interface for define
WEAK, ALIAS symbols in object files.
PART OF : MPUIO - library .
USAGE : Internal only .
NOTE : Include "libmpuio.h" before this FILE .
Copyright (C) 2000 - 2026 by Andrey 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
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)
# define MPU_THREAD_LOCAL _Thread_local
#elif defined(__GNUC__)
# define MPU_THREAD_LOCAL __thread
#else
# error "Thread-local storage is not supported"
#endif
#ifdef __cplusplus
} /* ... extern "C" */
#endif
#endif /* __MPU_SYMBOLS_H */
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