common.h

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/*
 *  Copyright (c) 2000-2022 Inria
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *  this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *  this list of conditions and the following disclaimer in the documentation
 *  and/or other materials provided with the distribution.
 *  * Neither the name of the ALICE Project-Team nor the names of its
 *  contributors may be used to endorse or promote products derived from this
 *  software without specific prior written permission.
 * 
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *  POSSIBILITY OF SUCH DAMAGE.
 *
 *  Contact: Bruno Levy
 *
 *     https://www.inria.fr/fr/bruno-levy
 *
 *     Inria,
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 */
 
#ifndef GEOGRAM_BASIC_COMMON
#define GEOGRAM_BASIC_COMMON
 
#include <geogram/api/defs.h>
 
// iostream should be included before anything else,
// otherwise 'cin', 'cout' and 'cerr' will be uninitialized.
#include <iostream>
 
namespace GEO {
 
    enum {
        GEOGRAM_NO_HANDLER = 0,
        GEOGRAM_INSTALL_HANDLERS = 1
    };
    
    void GEOGRAM_API initialize(int flags = GEOGRAM_INSTALL_HANDLERS);
 
    void GEOGRAM_API terminate();
}
 
#if (defined(NDEBUG) || defined(GEOGRAM_PSM)) && !defined(GEOGRAM_PSM_DEBUG)
#undef GEO_DEBUG
#undef GEO_PARANOID
#else
#define GEO_DEBUG
#define GEO_PARANOID
#endif
 
// =============================== LINUX defines ===========================
 
#if defined(__ANDROID__)
#define GEO_OS_ANDROID
#endif
 
#if defined(__linux__)
 
#define GEO_OS_LINUX
#define GEO_OS_UNIX
 
#ifndef GEO_OS_ANDROID
#define GEO_OS_X11
#endif
 
#if defined(_OPENMP)
#  define GEO_OPENMP
#endif
 
#if defined(__INTEL_COMPILER)
#  define GEO_COMPILER_INTEL
#elif defined(__clang__)
#  define GEO_COMPILER_CLANG
#elif defined(__GNUC__)
#  define GEO_COMPILER_GCC
#else
#  error "Unsupported compiler"
#endif
 
// The following works on GCC and ICC
#if defined(__x86_64)
#  define GEO_ARCH_64
#  define GEO_PROCESSOR_X86
#else
#  define GEO_ARCH_32
#endif
 
// =============================== WINDOWS defines =========================
 
#elif defined(_WIN32) || defined(_WIN64)
 
#define GEO_OS_WINDOWS
#define GEO_PROCESSOR_X86
 
#if defined(_OPENMP)
#  define GEO_OPENMP
#endif
 
#if defined(_MSC_VER)
#  define GEO_COMPILER_MSVC
#elif defined(__MINGW32__) || defined(__MINGW64__)
#  define GEO_COMPILER_MINGW
#endif
 
#if defined(_WIN64)
#  define GEO_ARCH_64
#else
#  define GEO_ARCH_32
#endif
 
// =============================== APPLE defines ===========================
 
#elif defined(__APPLE__)
 
#define GEO_OS_APPLE
#define GEO_OS_UNIX
 
#if defined(_OPENMP)
#  define GEO_OPENMP
#endif
 
#if defined(__clang__)
#  define GEO_COMPILER_CLANG
#elif defined(__GNUC__)
#  define GEO_COMPILER_GCC
#else
#  error "Unsupported compiler"
#endif
 
#if defined(__x86_64) || defined(__ppc64__) || defined(__arm64__) || defined(__aarch64__) || (defined(__riscv) && __riscv_xlen == 64)
#  define GEO_ARCH_64
#else
#  define GEO_ARCH_32
#endif
 
// =============================== Emscripten defines  ======================
 
#elif defined(__EMSCRIPTEN__)
 
#define GEO_OS_UNIX
#define GEO_OS_LINUX
#define GEO_OS_EMSCRIPTEN
#define GEO_ARCH_64
#define GEO_COMPILER_EMSCRIPTEN
 
// =============================== Unsupported =============================
#else
#error "Unsupported operating system"
#endif
 
#if defined(GEO_COMPILER_GCC)   || \
    defined(GEO_COMPILER_CLANG) || \
    defined(GEO_COMPILER_MINGW) || \
    defined(GEO_COMPILER_EMSCRIPTEN)
#define GEO_COMPILER_GCC_FAMILY
#endif
 
#ifdef DOXYGEN_ONLY
// Keep doxygen happy
#define GEO_OS_WINDOWS
#define GEO_OS_APPLE
#define GEO_OS_ANDROID
#define GEO_ARCH_32
#define GEO_COMPILER_INTEL
#define GEO_COMPILER_MSVC
#endif
 
#define CPP_CONCAT_(A, B) A ## B
 
#define CPP_CONCAT(A, B) CPP_CONCAT_(A, B)
 
#if defined(GOMGEN)
#define GEO_NORETURN
#elif defined(GEO_COMPILER_GCC_FAMILY) || \
      defined(GEO_COMPILER_INTEL) 
#define GEO_NORETURN __attribute__((noreturn))
#else
#define GEO_NORETURN
#endif
 
#if defined(GOMGEN)
#define GEO_NORETURN_DECL 
#elif defined(GEO_COMPILER_MSVC)
#define GEO_NORETURN_DECL __declspec(noreturn)
#else
#define GEO_NORETURN_DECL 
#endif
 
#if defined(GEO_COMPILER_CLANG) || defined(GEO_COMPILER_EMSCRIPTEN)
#if __has_feature(cxx_noexcept)
#define GEO_NOEXCEPT noexcept
#endif
#endif
 
// For Graphite GOM generator (swig is confused by throw() specifier) 
#ifdef GOMGEN 
#define GEO_NOEXCEPT
#endif
 
#ifndef GEO_NOEXCEPT
#define GEO_NOEXCEPT throw()
#endif
 
#define FOR(I,UPPERBND) for(index_t I = 0; I<index_t(UPPERBND); ++I)
 
// Silence warnings for alloca()
// We use it at different places to allocate objects on the stack
// (for instance, in multi-precision predicates).
#ifdef GEO_COMPILER_CLANG
#pragma GCC diagnostic ignored "-Walloca"
#endif
 
#endif