libvirt/config-post.h

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/*
* Copyright (C) 2013 Red Hat, Inc.
*
* This 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.
*
* This 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 this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#ifndef __GNUC__
# error "Libvirt requires GCC >= 4.8, or CLang"
#endif
/*
* Define __GNUC_PREREQ to a sane default if it isn't yet defined.
* This is done here so that it's included as early as possible; gnulib relies
* on this to be defined in features.h, which should be included from ctype.h.
* This doesn't happen on many non-glibc systems.
* When __GNUC_PREREQ is not defined, gnulib defines it to 0, which breaks things.
*/
#ifndef __GNUC_PREREQ
# define __GNUC_PREREQ(maj, min) \
((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
#endif
#if defined(__clang_major__) && defined(__clang_minor__)
# ifdef __apple_build_version__
# if __clang_major__ < 5 || (__clang_major__ == 5 && __clang_minor__ < 1)
# error You need at least XCode Clang v5.1 to compile QEMU
# endif
# else
# if __clang_major__ < 3 || (__clang_major__ == 3 && __clang_minor__ < 4)
# error You need at least Clang v3.4 to compile QEMU
# endif
# endif
#elif defined(__GNUC__) && defined(__GNUC_MINOR__)
# if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 8)
# error You need at least GCC v4.8 to compile QEMU
# endif
#else
# error You either need at least GCC 4.8 or Clang 3.4 or XCode Clang 5.1 to compile libvirt
#endif