attributes.hh

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/* vim: set sw=4 sts=4 et foldmethod=syntax : */

/*
 * Copyright (c) 2005, 2006, 2007, 2008 Ciaran McCreesh
 *
 * This file is part of the Paludis package manager. Paludis is free software;
 * you can redistribute it and/or modify it under the terms of the GNU General
 * Public License version 2, as published by the Free Software Foundation.
 *
 * Paludis 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 General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef PALUDIS_GUARD_PALUDIS_ATTRIBUTES_HH
#define PALUDIS_GUARD_PALUDIS_ATTRIBUTES_HH 1

/** \file
 * Declare the PALUDIS_ATTRIBUTE macros.
 *
 * \ingroup g_utils
 *
 * \section Examples
 *
 * - None at this time.
 */

/** \def PALUDIS_ATTRIBUTE
 * If we're using a recent GCC or ICC, expands to __attribute__, otherwise
 * discards its arguments.
 *
 * \ingroup g_utils
 */

/** \def PALUDIS_VISIBLE
 * Marker used to represent 'make visible', if visibility is enabled.
 *
 * \ingroup g_utils
 */

/** \def PALUDIS_HIDDEN
 * Marker used to represent 'make hidden', if visibility is enabled.
 *
 * \ingroup g_utils
 */

#if (defined(__GNUC__) && ! defined(DOXYGEN))
#  if defined(__ICC)
#    define PALUDIS_ATTRIBUTE(x)
#  else
#    if ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
#      define PALUDIS_ATTRIBUTE(x) __attribute__(x)
#      define PALUDIS_CAN_USE_ATTRIBUTE 1
#    else
#      define PALUDIS_ATTRIBUTE(x)
#    endif
#  endif
#else
#  define PALUDIS_ATTRIBUTE(x)
#endif

#if (defined(PALUDIS_ENABLE_VISIBILITY) && ! defined(DOXYGEN))
#  define PALUDIS_VISIBLE PALUDIS_ATTRIBUTE((visibility("default")))
#  define PALUDIS_HIDDEN PALUDIS_ATTRIBUTE((visibility("hidden")))
#else
#  define PALUDIS_VISIBLE
#  define PALUDIS_HIDDEN
#endif

#if defined(PALUDIS_HAVE_NOEXCEPT)
#  define PALUDIS_NOEXCEPT(x) noexcept(x)
#else
#  define PALUDIS_NOEXCEPT(x)
#endif

#define PALUDIS_TLS static __thread

#endif