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/* Macros for checking required GCC compatibility. Generic version.
Copyright (C) 2014-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library 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.
The GNU C Library 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 the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
/* This is the base file. More-specific sysdeps/.../gcc-compat.h files
can define GCC_COMPAT_VERSION and then #include_next this file. */
#ifndef _GENERIC_GCC_COMPAT_H
#define _GENERIC_GCC_COMPAT_H 1
/* This is the macro that gets used in #if tests in code: true iff
the library we build must be compatible with user code built by
GCC version MAJOR.MINOR. */
#define GCC_COMPAT(major, minor) \
(GCC_COMPAT_VERSION <= GCC_VERSION (major, minor))
/* This is how we compose an integer from major and minor version
numbers, for comparison. */
#define GCC_VERSION(major, minor) \
(((major) << 16) + (minor))
#ifndef GCC_COMPAT_VERSION
/* GCC 2.7.2 was current at the time of the glibc-2.0 release.
We assume nothing before that ever mattered. */
# define GCC_COMPAT_VERSION GCC_VERSION (2, 7)
#endif
#endif
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