1  //===-------------------------- __cxxabi_config.h -------------------------===//
  2  //
  3  // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  4  // See https://llvm.org/LICENSE.txt for license information.
  5  // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  6  //
  7  //===----------------------------------------------------------------------===//
  8  
  9  #ifndef ____CXXABI_CONFIG_H
 10  #define ____CXXABI_CONFIG_H
 11  
 12  #if defined(__arm__) && !defined(__USING_SJLJ_EXCEPTIONS__) &&                 \
 13      !defined(__ARM_DWARF_EH__)
 14  #define _LIBCXXABI_ARM_EHABI
 15  #endif
 16  
 17  #if !defined(__has_attribute)
 18  #define __has_attribute(_attribute_) 0
 19  #endif
 20  
 21  #if defined(__clang__)
 22  #  define _LIBCXXABI_COMPILER_CLANG
 23  #  ifndef __apple_build_version__
 24  #    define _LIBCXXABI_CLANG_VER (__clang_major__ * 100 + __clang_minor__)
 25  #  endif
 26  #elif defined(__GNUC__)
 27  #  define _LIBCXXABI_COMPILER_GCC
 28  #elif defined(_MSC_VER)
 29  #  define _LIBCXXABI_COMPILER_MSVC
 30  #elif defined(__IBMCPP__)
 31  #  define _LIBCXXABI_COMPILER_IBM
 32  #endif
 33  
 34  #if defined(_WIN32)
 35   #if defined(_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS)
 36    #define _LIBCXXABI_HIDDEN
 37    #define _LIBCXXABI_DATA_VIS
 38    #define _LIBCXXABI_FUNC_VIS
 39    #define _LIBCXXABI_TYPE_VIS
 40   #elif defined(_LIBCXXABI_BUILDING_LIBRARY)
 41    #define _LIBCXXABI_HIDDEN
 42    #define _LIBCXXABI_DATA_VIS __declspec(dllexport)
 43    #define _LIBCXXABI_FUNC_VIS __declspec(dllexport)
 44    #define _LIBCXXABI_TYPE_VIS __declspec(dllexport)
 45   #else
 46    #define _LIBCXXABI_HIDDEN
 47    #define _LIBCXXABI_DATA_VIS __declspec(dllimport)
 48    #define _LIBCXXABI_FUNC_VIS __declspec(dllimport)
 49    #define _LIBCXXABI_TYPE_VIS __declspec(dllimport)
 50   #endif
 51  #else
 52   #if !defined(_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS)
 53    #define _LIBCXXABI_HIDDEN __attribute__((__visibility__("hidden")))
 54    #define _LIBCXXABI_DATA_VIS __attribute__((__visibility__("default")))
 55    #define _LIBCXXABI_FUNC_VIS __attribute__((__visibility__("default")))
 56    #if __has_attribute(__type_visibility__)
 57     #define _LIBCXXABI_TYPE_VIS __attribute__((__type_visibility__("default")))
 58    #else
 59     #define _LIBCXXABI_TYPE_VIS __attribute__((__visibility__("default")))
 60    #endif
 61   #else
 62    #define _LIBCXXABI_HIDDEN
 63    #define _LIBCXXABI_DATA_VIS
 64    #define _LIBCXXABI_FUNC_VIS
 65    #define _LIBCXXABI_TYPE_VIS
 66   #endif
 67  #endif
 68  
 69  #if defined(_LIBCXXABI_COMPILER_MSVC)
 70  #define _LIBCXXABI_WEAK
 71  #else
 72  #define _LIBCXXABI_WEAK __attribute__((__weak__))
 73  #endif
 74  
 75  #if defined(__clang__)
 76  #define _LIBCXXABI_COMPILER_CLANG
 77  #elif defined(__GNUC__)
 78  #define _LIBCXXABI_COMPILER_GCC
 79  #endif
 80  
 81  #if __has_attribute(__no_sanitize__) && defined(_LIBCXXABI_COMPILER_CLANG)
 82  #define _LIBCXXABI_NO_CFI __attribute__((__no_sanitize__("cfi")))
 83  #else
 84  #define _LIBCXXABI_NO_CFI
 85  #endif
 86  
 87  // wasm32 follows the arm32 ABI convention of using 32-bit guard.
 88  #if defined(__arm__) || defined(__wasm32__) || defined(__ARM64_ARCH_8_32__)
 89  #  define _LIBCXXABI_GUARD_ABI_ARM
 90  #endif
 91  
 92  #if defined(_LIBCXXABI_COMPILER_CLANG)
 93  #  if !__has_feature(cxx_exceptions)
 94  #    define _LIBCXXABI_NO_EXCEPTIONS
 95  #  endif
 96  #elif defined(_LIBCXXABI_COMPILER_GCC) && !__EXCEPTIONS
 97  #  define _LIBCXXABI_NO_EXCEPTIONS
 98  #endif
 99  
100  #endif // ____CXXABI_CONFIG_H