platform.hpp

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// -----------------------------------------------------------------------------------------------------
// Copyright (c) 2006-2020, Knut Reinert & Freie Universität Berlin
// Copyright (c) 2016-2020, Knut Reinert & MPI für molekulare Genetik
// This file may be used, modified and/or redistributed under the terms of the 3-clause BSD-License
// shipped with this file and also available at: https://github.com/seqan/seqan3/blob/master/LICENSE.md
// -----------------------------------------------------------------------------------------------------
 
#pragma once
 
#include <cinttypes>
#include <ciso646> // makes _LIBCPP_VERSION available
#include <cstddef> // makes __GLIBCXX__ available
 
// macro cruft
#define STR_HELPER(x) #x
#define STR(x) STR_HELPER(x)
 
// ============================================================================
//  C++ standard and features
// ============================================================================
 
// C++ standard [required]
#ifdef __cplusplus
    static_assert(__cplusplus >= 201703, "SeqAn3 requires C++17, make sure that you have set -std=c++17.");
#else
#   error "This is not a C++ compiler."
#endif
 
#if __has_include(<version>)
#   include <version>
#endif
 
// C++ Concepts [required]
#ifdef __cpp_concepts
#   if __cpp_concepts == 201507 // GCC and Concepts TS
#       define SEQAN3_CONCEPT concept bool
#   else
        static_assert(__cpp_concepts >= 201507, "Your compiler supports Concepts, but the support is not recent enough.");
#       define SEQAN3_CONCEPT concept
#   endif
#else
#   error "SeqAn3 requires C++ Concepts, either vie the TS (flag: -fconcepts) or via C++20 (flag: -std=c++2a / -std=c++20)."
#endif
 
// filesystem [required]
#if !__has_include(<filesystem>)
#   if !__has_include(<experimental/filesystem>)
#      error SeqAn3 requires C++17 filesystem support, but it was not found.
#   endif
#endif
 
// ============================================================================
//  Dependencies
// ============================================================================
 
// SeqAn [required]
#if !__has_include(<seqan3/version.hpp>)
#   error SeqAn3 include directory not set correctly. Forgot to add -I ${INSTALLDIR}/include to your CXXFLAGS?
#endif
 
// Ranges [required]
#if __has_include(<range/v3/version.hpp>)
#   define RANGE_V3_MINVERSION 1000
#   define RANGE_V3_MAXVERSION 1099
// TODO the following doesn't actually show the current version, only its formula. How'd you do it?
#   define MSG "Your version: " STR(RANGE_V3_VERSION) \
                "; minimum version: " STR(RANGE_V3_MINVERSION) \
                "; expected maximum version: " STR(RANGE_V3_MAXVERSION)
#   include <range/v3/version.hpp>
#   if RANGE_V3_VERSION < RANGE_V3_MINVERSION
#       error Your range-v3 library is too old.
#       pragma message(MSG)
#   elif RANGE_V3_VERSION > RANGE_V3_MAXVERSION
#       pragma GCC warning "Your range-v3 library is possibly too new. Some features might not work correctly."
#       pragma message(MSG)
#   endif
#   undef MSG
#else
#   error The range-v3 library was not included correctly. Forgot to add -I ${INSTALLDIR}/include to your CXXFLAGS?
#endif
 
// SDSL [required]
#if __has_include(<sdsl/version.hpp>)
#   include <sdsl/version.hpp>
    static_assert(sdsl::sdsl_version_major == 3, "Only version 3 of the SDSL is supported by SeqAn3.");
#else
#   error The sdsl library was not included correctly. Forgot to add -I ${INSTALLDIR}/include to your CXXFLAGS?
#endif
 
// Cereal [optional]
#ifndef SEQAN3_WITH_CEREAL
#   if __has_include(<cereal/cereal.hpp>)
#       define SEQAN3_WITH_CEREAL 1
#   else
#       define SEQAN3_WITH_CEREAL 0
#   endif
#elif SEQAN3_WITH_CEREAL != 0
#   if ! __has_include(<cereal/cereal.hpp>)
#       error Cereal was marked as required, but not found!
#   endif
#endif
 
#if !SEQAN3_WITH_CEREAL
 
#   define CEREAL_SERIALIZE_FUNCTION_NAME serialize
#   define CEREAL_LOAD_FUNCTION_NAME load
#   define CEREAL_SAVE_FUNCTION_NAME save
#   define CEREAL_LOAD_MINIMAL_FUNCTION_NAME load_minimal
#   define CEREAL_SAVE_MINIMAL_FUNCTION_NAME save_minimal
 
#endif
 
// Lemon [optional]
#ifndef SEQAN3_WITH_LEMON
#   if __has_include(<lemon/config.h>)
#       define SEQAN3_WITH_LEMON 1
#   else
#       define SEQAN3_WITH_LEMON 0
#   endif
#elif SEQAN3_WITH_LEMON != 0
#   if !__has_include(<lemon/config.h>)
#       error Lemon was marked as required, but not found!
#   endif
#endif
#if SEQAN3_WITH_LEMON == 1
#   define LEMON_HAVE_LONG_LONG 1
#   define LEMON_CXX11 1
#   if defined(__unix__) || defined(__APPLE__)
#       define LEMON_USE_PTHREAD 1
#       define LEMON_USE_WIN32_THREADS 0
#       define LEMON_WIN32 0
#   else
#       define LEMON_USE_PTHREAD 0
#       define LEMON_USE_WIN32_THREADS 1
#       define LEMON_WIN32 1
#   endif
#endif
 
// TODO (doesn't have a version.hpp, yet)
 
// ============================================================================
//  Documentation
// ============================================================================
 
// Doxygen related
// this macro is a NO-OP unless doxygen parses it, in which case it resolves to the argument
#ifndef SEQAN3_DOXYGEN_ONLY
#   define SEQAN3_DOXYGEN_ONLY(x)
#endif
 
// ============================================================================
//  Deprecation Messages
// ============================================================================
 
#if !defined(SEQAN3_DEPRECATED_310)
#   define SEQAN3_DEPRECATED_310 [[deprecated("This will be removed in SeqAn-3.1.0; please see the documentation.")]]
#endif
 
// ============================================================================
//  Workarounds
// ============================================================================
 
#ifndef SEQAN3_WORKAROUND_VIEW_PERFORMANCE
#   define SEQAN3_WORKAROUND_VIEW_PERFORMANCE 1
#endif
 
#ifndef SEQAN3_WORKAROUND_GCC_87113
#   if defined(__GNUC_MINOR__) && ((__GNUC__ == 7) || ((__GNUC__ == 8) && (__GNUC_MINOR__ < 3)))
#       define SEQAN3_WORKAROUND_GCC_87113 1
#   else
#       define SEQAN3_WORKAROUND_GCC_87113 0
#   endif
#endif
 
#ifndef SEQAN3_WORKAROUND_GCC_90897
#   if defined(__GNUC__) && (__GNUC__ == 8)
#       define SEQAN3_WORKAROUND_GCC_90897 1
#   else
#       define SEQAN3_WORKAROUND_GCC_90897 0
#   endif
#endif
 
#ifndef SEQAN3_WORKAROUND_GCC7_AND_8_CONCEPT_ISSUES
#   if defined(__GNUC__) && ((__GNUC__ == 7) || (__GNUC__ == 8))
#       define SEQAN3_WORKAROUND_GCC7_AND_8_CONCEPT_ISSUES 1
#   else
#       define SEQAN3_WORKAROUND_GCC7_AND_8_CONCEPT_ISSUES 0
#   endif
#endif
 
// ============================================================================
//  Backmatter
// ============================================================================
 
// macro cruft undefine
#undef STR
#undef STR_HELPER