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43 lines
1.7 KiB
C
43 lines
1.7 KiB
C
/* Macros for checking required GCC compatibility. Generic version.
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Copyright (C) 2014-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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/* This is the base file. More-specific sysdeps/.../gcc-compat.h files
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can define GCC_COMPAT_VERSION and then #include_next this file. */
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#ifndef _GENERIC_GCC_COMPAT_H
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#define _GENERIC_GCC_COMPAT_H 1
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/* This is the macro that gets used in #if tests in code: true iff
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the library we build must be compatible with user code built by
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GCC version MAJOR.MINOR. */
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#define GCC_COMPAT(major, minor) \
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(GCC_COMPAT_VERSION <= GCC_VERSION (major, minor))
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/* This is how we compose an integer from major and minor version
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numbers, for comparison. */
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#define GCC_VERSION(major, minor) \
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(((major) << 16) + (minor))
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#ifndef GCC_COMPAT_VERSION
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/* GCC 2.7.2 was current at the time of the glibc-2.0 release.
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We assume nothing before that ever mattered. */
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# define GCC_COMPAT_VERSION GCC_VERSION (2, 7)
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#endif
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#endif
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