mpv/osdep/compiler.h

#ifndef MPV_COMPILER_H
#define MPV_COMPILER_H

#define MP_EXPAND_ARGS(...) __VA_ARGS__

#ifdef __GNUC__

#define MP_NORETURN __attribute__((noreturn))

/** Use gcc attribute to check printf fns.  a1 is the 1-based index of
 * the parameter containing the format, and a2 the index of the first
 * argument. **/
#if defined(__MINGW32__) && !defined(__clang__)
// MinGW maps "printf" to the non-standard MSVCRT functions, even if
// __USE_MINGW_ANSI_STDIO is defined and set to 1. We need to use "gnu_printf",
// which isn't necessarily available on other GCC compatible compilers.
#define PRINTF_ATTRIBUTE(a1, a2) __attribute__ ((format (gnu_printf, a1, a2)))
#else
#define PRINTF_ATTRIBUTE(a1, a2) __attribute__ ((format (printf, a1, a2)))
#endif

#else
#define PRINTF_ATTRIBUTE(a1, a2)
#define MP_NORETURN
#endif

#endif