compiler.h

/* Copyright (c) 2010-2017, Stefan Eilemann <eile@eyescale.ch>
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License version 2.1 as published
 * by the Free Software Foundation.
 *
 * 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, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#pragma once

#ifdef __cplusplus
#include <boost/config.hpp>
#endif
// align macros
#ifdef _MSC_VER
#define LB_ALIGN8(var) __declspec(align(8)) var;
#define LB_ALIGN16(var) __declspec(align(16)) var;
#elif defined(__GNUC__)
#define LB_ALIGN8(var) var __attribute__((aligned(8)));
#define LB_ALIGN16(var) var __attribute__((aligned(16)));
#define LB_UNUSED __attribute__((unused))
#define LB_LIKELY(x) __builtin_expect((x), 1)
#define LB_UNLIKELY(x) __builtin_expect((x), 0)
#ifdef WARN_DEPRECATED // Set CMake option COMMON_WARN_DEPRECATED
#define LB_DEPRECATED __attribute__((deprecated))
#endif
#if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 0)))
#define LB_GCC_4_0_OR_LATER
#endif
#if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 1)))
#define LB_GCC_4_1_OR_LATER
#endif
#if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 2)))
#define LB_GCC_4_2_OR_LATER
#endif
#if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 3)))
#define LB_GCC_4_3_OR_LATER
#endif
#if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 4)))
#define LB_GCC_4_4_OR_LATER
#endif
#if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5)))
#define LB_GCC_4_5_OR_LATER
#endif
#if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)))
#define LB_GCC_4_6_OR_LATER
#endif
#if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)))
#define LB_GCC_4_7_OR_LATER
#endif
#if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 8)))
#define LB_GCC_4_8_OR_LATER
#endif
#if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 9)))
#define LB_GCC_4_9_OR_LATER
#endif
#if ((__GNUC__ < 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ < 3)))
#define LB_GCC_4_3_OR_OLDER
#endif

#if ((__GNUC__ == 4) && (__GNUC_MINOR__ == 2))
#define LB_GCC_4_2
#endif
#if ((__GNUC__ == 4) && (__GNUC_MINOR__ == 3))
#define LB_GCC_4_3
#endif
#if ((__GNUC__ == 4) && (__GNUC_MINOR__ == 4))
#define LB_GCC_4_4
#endif
#if ((__GNUC__ == 4) && (__GNUC_MINOR__ == 5))
#define LB_GCC_4_5
#endif
#if ((__GNUC__ == 4) && (__GNUC_MINOR__ == 6))
#define LB_GCC_4_6
#endif
#if ((__GNUC__ == 4) && (__GNUC_MINOR__ == 7))
#define LB_GCC_4_7
#endif
#if ((__GNUC__ == 4) && (__GNUC_MINOR__ == 8))
#define LB_GCC_4_8
#endif
#if ((__GNUC__ == 4) && (__GNUC_MINOR__ == 9))
#define LB_GCC_4_9
#endif
#else
#warning Unknown compiler, taking guesses
#define LB_ALIGN8(var) var __attribute__((aligned(8)));
#define LB_ALIGN16(var) var __attribute__((aligned(16)));
#endif // GCC

#ifndef LB_UNUSED
#define LB_UNUSED
#endif
#ifndef LB_LIKELY
#define LB_LIKELY(x) x
#define LB_UNLIKELY(x) x
#endif
#ifndef LB_PUSH_DEPRECATED
#ifdef LB_DEPRECATED
#define LB_PUSH_DEPRECATED                                                \
    _Pragma("clang diagnostic push")                                      \
        _Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"") \
            _Pragma("GCC diagnostic push") _Pragma(                       \
                "GCC diagnostic ignored \"-Wdeprecated-declarations\"")

#define LB_POP_DEPRECATED \
    _Pragma("clang diagnostic pop") _Pragma("GCC diagnostic pop")
#else
#define LB_DEPRECATED
#define LB_PUSH_DEPRECATED
#define LB_POP_DEPRECATED
#endif
#endif