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// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; indent-tabs-mode: nil; -*-
//
// compiler.h: Rcpp R/C++ interface class library -- check compiler
//
// Copyright (C) 2012 - 2013 Dirk Eddelbuettel, Romain Francois, and Kevin Ushey
//
// This file is part of Rcpp.
//
// Rcpp is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// Rcpp 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 Rcpp. If not, see <http://www.gnu.org/licenses/>.
#ifndef Rcpp__platform__compiler_h
#define Rcpp__platform__compiler_h
// NB: A vast list valid identifiers is at these wiki pages:
// http://sourceforge.net/p/predef/wiki/Home/
#undef GOOD_COMPILER_FOR_RCPP
#ifdef __GNUC__
#define GOOD_COMPILER_FOR_RCPP
#endif
#ifdef __SUNPRO_CC
#define GOOD_COMPILER_FOR_RCPP
#endif
#ifdef __clang__
#define GOOD_COMPILER_FOR_RCPP
#endif
#ifdef __INTEL_COMPILER
#define GOOD_COMPILER_FOR_RCPP
#endif
#ifndef GOOD_COMPILER_FOR_RCPP
# error "This compiler is not supported"
#endif
#ifdef __GNUC__
#define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
// g++ 4.5 does not seem to like some of the fast indexing
#if GCC_VERSION >= 40500
#define IS_GCC_450_OR_LATER
#endif
// g++ 4.6 switches from exception_defines.h to bits/exception_defines.h
#if GCC_VERSION < 40600
#define IS_EARLIER_THAN_GCC_460
#endif
#if GCC_VERSION >= 40600
#define IS_GCC_460_OR_LATER
#endif
#endif
// Check for the presence of C++0x (or later) support
#if defined(__GXX_EXPERIMENTAL_CXX0X__) || (__cplusplus >= 201103L)
#define RCPP_USING_CXX0X_OR_LATER
#endif
// Check C++0x/11 features
#if defined(__INTEL_COMPILER)
#if __cplusplus >= 201103L
#define RCPP_USING_CXX11
#if __INTEL_COMPILER >= 1210
#define HAS_VARIADIC_TEMPLATES
#endif
#if __INTEL_COMPILER >= 1100
#define HAS_STATIC_ASSERT
#endif
#endif
#elif defined(__clang__)
#if __cplusplus >= 201103L
#define RCPP_USING_CXX11
#if __has_feature(cxx_variadic_templates)
#define HAS_VARIADIC_TEMPLATES
#endif
#if __has_feature(cxx_static_assert)
#define HAS_STATIC_ASSERT
#endif
#endif
#elif defined(__GNUC__)
#ifdef __GXX_EXPERIMENTAL_CXX0X__
#if GCC_VERSION >= 40300
#define HAS_VARIADIC_TEMPLATES
#define HAS_STATIC_ASSERT
#endif
#endif
#if GCC_VERSION >= 40800 && __cplusplus >= 201103L
#define RCPP_USING_CXX11
#endif
#endif
// Check C++0x headers
#include <cmath>
#if defined(__INTEL_COMPILER) || (defined(__GNUC__) && !defined(__clang__))
#if defined(__GLIBCXX__) && defined(__GXX_EXPERIMENTAL_CXX0X__)
#if GCC_VERSION >= 40400
#define HAS_CXX0X_UNORDERED_MAP
#define HAS_CXX0X_UNORDERED_SET
#define HAS_CXX0X_INITIALIZER_LIST
#endif
#endif
#elif defined(__clang__)
#if __cplusplus >= 201103L
#if __has_include(<unordered_map>)
#define HAS_CXX0X_UNORDERED_MAP
#endif
#if __has_include(<unordered_set>)
#define HAS_CXX0X_UNORDERED_SET
#endif
#if __has_include(<initializer_list>)
#define HAS_CXX0X_INITIALIZER_LIST
#endif
#endif
#endif
// Check TR1 Headers
#if defined(__INTEL_COMPILER) || (defined(__GNUC__) && !defined(__clang__))
#if defined(__GLIBCXX__)
#if GCC_VERSION >= 40400 || ( GCC_VERSION >= 40201 && defined(__APPLE__) )
#define HAS_TR1_UNORDERED_MAP
#define HAS_TR1_UNORDERED_SET
#endif
#endif
#elif defined(__clang__)
#if __cplusplus >= 201103L
#if __has_include(<tr1/unordered_map>)
#define HAS_TR1_UNORDERED_MAP
#endif
#if __has_include(<tr1/unordered_set>)
#define HAS_TR1_UNORDERED_SET
#endif
#endif
#endif
#if defined(HAS_TR1_UNORDERED_MAP) && defined(HAS_TR1_UNORDERED_SET)
#define HAS_TR1
#endif
// Conditionally include headers
#ifdef HAS_CXX0X_INITIALIZER_LIST
#include <initializer_list>
#endif
#ifdef RCPP_USING_CXX11
#if defined(HAS_CXX0X_UNORDERED_MAP)
#include <unordered_map>
#define RCPP_USING_UNORDERED_MAP
#define RCPP_UNORDERED_MAP std::unordered_map
#else
#include <map>
#define RCPP_USING_MAP
#define RCPP_UNORDERED_MAP std::map
#endif
#if defined(HAS_CXX0X_UNORDERED_SET)
#include <unordered_set>
#define RCPP_USING_UNORDERED_SET
#define RCPP_UNORDERED_SET std::unordered_set
#else
#include <set>
#define RCPP_USING_SET
#define RCPP_UNORDERED_SET std::set
#endif
#else
#if defined(HAS_TR1_UNORDERED_MAP)
#include <tr1/unordered_map>
#define RCPP_USING_TR1_UNORDERED_MAP
#define RCPP_UNORDERED_MAP std::tr1::unordered_map
#else
#include <map>
#define RCPP_USING_MAP
#define RCPP_UNORDERED_MAP std::map
#endif
#if defined(HAS_TR1_UNORDERED_SET)
#include <tr1/unordered_set>
#define RCPP_USING_TR1_UNORDERED_SET
#define RCPP_UNORDERED_SET std::tr1::unordered_set
#else
#include <set>
#define RCPP_USING_SET
#define RCPP_UNORDERED_SET std::set
#endif
#endif
#ifdef __GNUC__
#define RCPP_HAS_DEMANGLING
#endif
#endif
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