diff -r c4fd2813b127 -r d92eeb468dad misc/winutils/include/libavutil/attributes.h
--- a/misc/winutils/include/libavutil/attributes.h	Wed Jul 31 23:14:27 2019 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,122 +0,0 @@
-/*
- * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * Libav is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * @file
- * Macro definitions for various function/variable attributes
- */
-
-#ifndef AVUTIL_ATTRIBUTES_H
-#define AVUTIL_ATTRIBUTES_H
-
-#ifdef __GNUC__
-#    define AV_GCC_VERSION_AT_LEAST(x,y) (__GNUC__ > x || __GNUC__ == x && __GNUC_MINOR__ >= y)
-#else
-#    define AV_GCC_VERSION_AT_LEAST(x,y) 0
-#endif
-
-#if AV_GCC_VERSION_AT_LEAST(3,1)
-#    define av_always_inline __attribute__((always_inline)) inline
-#elif defined(_MSC_VER)
-#    define av_always_inline __forceinline
-#else
-#    define av_always_inline inline
-#endif
-
-#if AV_GCC_VERSION_AT_LEAST(3,1)
-#    define av_noinline __attribute__((noinline))
-#else
-#    define av_noinline
-#endif
-
-#if AV_GCC_VERSION_AT_LEAST(3,1)
-#    define av_pure __attribute__((pure))
-#else
-#    define av_pure
-#endif
-
-#if AV_GCC_VERSION_AT_LEAST(2,6)
-#    define av_const __attribute__((const))
-#else
-#    define av_const
-#endif
-
-#if AV_GCC_VERSION_AT_LEAST(4,3)
-#    define av_cold __attribute__((cold))
-#else
-#    define av_cold
-#endif
-
-#if AV_GCC_VERSION_AT_LEAST(4,1)
-#    define av_flatten __attribute__((flatten))
-#else
-#    define av_flatten
-#endif
-
-#if AV_GCC_VERSION_AT_LEAST(3,1)
-#    define attribute_deprecated __attribute__((deprecated))
-#else
-#    define attribute_deprecated
-#endif
-
-#if defined(__GNUC__)
-#    define av_unused __attribute__((unused))
-#else
-#    define av_unused
-#endif
-
-/**
- * Mark a variable as used and prevent the compiler from optimizing it
- * away.  This is useful for variables accessed only from inline
- * assembler without the compiler being aware.
- */
-#if AV_GCC_VERSION_AT_LEAST(3,1)
-#    define av_used __attribute__((used))
-#else
-#    define av_used
-#endif
-
-#if AV_GCC_VERSION_AT_LEAST(3,3)
-#   define av_alias __attribute__((may_alias))
-#else
-#   define av_alias
-#endif
-
-#if defined(__GNUC__) && !defined(__ICC)
-#    define av_uninit(x) x=x
-#else
-#    define av_uninit(x) x
-#endif
-
-#ifdef __GNUC__
-#    define av_builtin_constant_p __builtin_constant_p
-#    define av_printf_format(fmtpos, attrpos) __attribute__((__format__(__printf__, fmtpos, attrpos)))
-#else
-#    define av_builtin_constant_p(x) 0
-#    define av_printf_format(fmtpos, attrpos)
-#endif
-
-#if AV_GCC_VERSION_AT_LEAST(2,5)
-#    define av_noreturn __attribute__((noreturn))
-#else
-#    define av_noreturn
-#endif
-
-#endif /* AVUTIL_ATTRIBUTES_H */