/
config_cxx.h
250 lines (210 loc) · 11.2 KB
/
config_cxx.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
// config_cxx.h - written and placed in public domain by Jeffrey Walton
// the bits that make up this source file are from the
// library's monolithic config.h.
/// \file config_cxx.h
/// \brief Library configuration file
/// \details <tt>config_cxx.h</tt> provides defines for C++ language and
/// runtime library
/// features.
/// \details <tt>config.h</tt> was split into components in May 2019 to better
/// integrate with Autoconf and its feature tests. The splitting occurred so
/// users could continue to include <tt>config.h</tt> while allowing Autoconf
/// to write new <tt>config_asm.h</tt> and new <tt>config_cxx.h</tt> using
/// its feature tests.
/// \note You should include <tt>config.h</tt> rather than <tt>config_cxx.h</tt>
/// directly.
/// \sa <A HREF="https://github.com/weidai11/cryptopp/issues/835">Issue 835,
/// Make config.h more autoconf friendly</A>,
/// <A HREF="https://www.cryptopp.com/wiki/Configure.sh">Configure.sh script</A>
/// on the Crypto++ wiki
/// \since Crypto++ 8.3
// Visual Studio began at VS2010, http://msdn.microsoft.com/en-us/library/hh567368%28v=vs.110%29.aspx
// and https://docs.microsoft.com/en-us/cpp/visual-cpp-language-conformance
// Intel, http://software.intel.com/en-us/articles/c0x-features-supported-by-intel-c-compiler
// GCC, http://gcc.gnu.org/projects/cxx0x.html
// Clang, http://clang.llvm.org/cxx_status.html
#ifndef CRYPTOPP_CONFIG_CXX_H
#define CRYPTOPP_CONFIG_CXX_H
#include "config_os.h"
#include "config_cpu.h"
#include "config_ver.h"
// https://github.com/weidai11/cryptopp/issues/960
#include <string>
#include <exception>
// You may need to force include a C++ header on Android when using STLPort
// to ensure _STLPORT_VERSION is defined
#if (defined(CRYPTOPP_MSC_VERSION) && CRYPTOPP_MSC_VERSION <= 1300) || \
defined(__MWERKS__) || \
(defined(_STLPORT_VERSION) && ((_STLPORT_VERSION < 0x450) || defined(_STLP_NO_UNCAUGHT_EXCEPT_SUPPORT)) || \
(__cplusplus >= 202002L))
#define CRYPTOPP_DISABLE_UNCAUGHT_EXCEPTION
#endif
// Ancient Crypto++ define, dating back to C++98.
#ifndef CRYPTOPP_DISABLE_UNCAUGHT_EXCEPTION
# define CRYPTOPP_UNCAUGHT_EXCEPTION_AVAILABLE 1
# define CRYPTOPP_CXX98_UNCAUGHT_EXCEPTION 1
#endif
// Compatibility with non-clang compilers.
#ifndef __has_feature
# define __has_feature(x) 0
#endif
// C++11 macro version, https://stackoverflow.com/q/7223991/608639
#if ((CRYPTOPP_MSC_VERSION >= 1600) || (__cplusplus >= 201103L)) && !defined(_STLPORT_VERSION)
# define CRYPTOPP_CXX11 1
#endif
// Hack ahead. Apple's standard library does not have C++'s unique_ptr in C++11.
// We can't test for unique_ptr directly because some of the non-Apple Clangs
// on OS X fail the same way. However, modern standard libraries have
// <forward_list>, so we test for it instead. Thanks to Jonathan Wakely for
// devising the clever test for modern/ancient versions. TODO: test under
// Xcode 3, where g++ is really g++.
#if defined(__APPLE__) && defined(__clang__)
# if !(defined(__has_include) && __has_include(<forward_list>))
# undef CRYPTOPP_CXX11
# endif
#endif
// C++14 macro version, https://stackoverflow.com/q/26089319/608639
#if defined(CRYPTOPP_CXX11) && !defined(CRYPTOPP_NO_CXX14)
# if ((CRYPTOPP_MSC_VERSION >= 1900) || (__cplusplus >= 201402L)) && !defined(_STLPORT_VERSION)
# define CRYPTOPP_CXX14 1
# endif
#endif
// C++17 macro version, https://stackoverflow.com/q/38456127/608639
#if defined(CRYPTOPP_CXX14) && !defined(CRYPTOPP_NO_CXX17)
# if ((CRYPTOPP_MSC_VERSION >= 1900) || (__cplusplus >= 201703L)) && !defined(_STLPORT_VERSION)
# define CRYPTOPP_CXX17 1
# endif
#endif
// ***************** C++11 and above ********************
#if defined(CRYPTOPP_CXX11)
// atomics: MS at VS2012 (17.00); GCC at 4.4; Clang at 3.1/3.2; Intel 13.0; SunCC 5.14.
#if (CRYPTOPP_MSC_VERSION >= 1700) || __has_feature(cxx_atomic) || \
(__INTEL_COMPILER >= 1300) || (CRYPTOPP_GCC_VERSION >= 40400) || (__SUNPRO_CC >= 0x5140)
# define CRYPTOPP_CXX11_ATOMIC 1
#endif // atomics
// synchronization: MS at VS2012 (17.00); GCC at 4.4; Clang at 3.3; Xcode 5.0; Intel 12.0; SunCC 5.13.
// TODO: verify Clang and Intel versions; find __has_feature(x) extension for Clang
#if (CRYPTOPP_MSC_VERSION >= 1700) || (CRYPTOPP_LLVM_CLANG_VERSION >= 30300) || \
(CRYPTOPP_APPLE_CLANG_VERSION >= 50000) || (__INTEL_COMPILER >= 1200) || \
(CRYPTOPP_GCC_VERSION >= 40400) || (__SUNPRO_CC >= 0x5130)
// Hack ahead. New GCC compilers like GCC 6 on AIX 7.0 or earlier as well as original MinGW
// don't have the synchronization gear. However, Wakely's test used for Apple does not work
// on the GCC/AIX combination. Another twist is we need other stuff from C++11,
// like no-except destructors. Dumping preprocessors shows the following may
// apply: http://stackoverflow.com/q/14191566/608639.
# include <cstddef>
# if !defined(__GLIBCXX__) || defined(_GLIBCXX_HAS_GTHREADS)
# define CRYPTOPP_CXX11_SYNCHRONIZATION 1
# endif
#endif // synchronization
// Dynamic Initialization and Destruction with Concurrency ("Magic Statics")
// MS at VS2015 with Vista (19.00); GCC at 4.3; LLVM Clang at 2.9; Apple Clang at 4.0; Intel 11.1; SunCC 5.13.
// Microsoft's implementation only works for Vista and above, so its further
// limited. http://connect.microsoft.com/VisualStudio/feedback/details/1789709
// Clang may not support this as early as we indicate. Also see https://bugs.llvm.org/show_bug.cgi?id=47012.
#if (__cpp_threadsafe_static_init >= 200806) || \
(CRYPTOPP_MSC_VERSION >= 1900) && ((WINVER >= 0x0600) || (_WIN32_WINNT >= 0x0600)) || \
(CRYPTOPP_LLVM_CLANG_VERSION >= 20900) || (CRYPTOPP_APPLE_CLANG_VERSION >= 40000) || \
(__INTEL_COMPILER >= 1110) || (CRYPTOPP_GCC_VERSION >= 40300) || (__SUNPRO_CC >= 0x5130)
# define CRYPTOPP_CXX11_STATIC_INIT 1
#endif // Dynamic Initialization compilers
// deleted functions: MS at VS2013 (18.00); GCC at 4.3; Clang at 2.9; Intel 12.1; SunCC 5.13.
#if (CRYPTOPP_MSC_VERSION >= 1800) || (CRYPTOPP_LLVM_CLANG_VERSION >= 20900) || \
(CRYPTOPP_APPLE_CLANG_VERSION >= 40000) || (__INTEL_COMPILER >= 1210) || \
(CRYPTOPP_GCC_VERSION >= 40300) || (__SUNPRO_CC >= 0x5130)
# define CRYPTOPP_CXX11_DELETED_FUNCTIONS 1
#endif // deleted functions
// alignof/alignas: MS at VS2015 (19.00); GCC at 4.8; Clang at 3.0; Intel 15.0; SunCC 5.13.
#if (CRYPTOPP_MSC_VERSION >= 1900) || __has_feature(cxx_alignas) || \
(__INTEL_COMPILER >= 1500) || (CRYPTOPP_GCC_VERSION >= 40800) || (__SUNPRO_CC >= 0x5130)
# define CRYPTOPP_CXX11_ALIGNAS 1
#endif // alignas
// alignof: MS at VS2015 (19.00); GCC at 4.5; Clang at 2.9; Intel 15.0; SunCC 5.13.
#if (CRYPTOPP_MSC_VERSION >= 1900) || __has_feature(cxx_alignof) || \
(__INTEL_COMPILER >= 1500) || (CRYPTOPP_GCC_VERSION >= 40500) || (__SUNPRO_CC >= 0x5130)
# define CRYPTOPP_CXX11_ALIGNOF 1
#endif // alignof
// initializer lists: MS at VS2013 (18.00); GCC at 4.4; Clang at 3.1; Intel 14.0; SunCC 5.13.
#if (CRYPTOPP_MSC_VERSION >= 1800) || (CRYPTOPP_LLVM_CLANG_VERSION >= 30100) || \
(CRYPTOPP_APPLE_CLANG_VERSION >= 40000) || (__INTEL_COMPILER >= 1400) || \
(CRYPTOPP_GCC_VERSION >= 40400) || (__SUNPRO_CC >= 0x5130)
# define CRYPTOPP_CXX11_INITIALIZER_LIST 1
#endif // alignas
// lambdas: MS at VS2012 (17.00); GCC at 4.9; Clang at 3.3; Intel 12.0; SunCC 5.14.
#if (CRYPTOPP_MSC_VERSION >= 1700) || __has_feature(cxx_lambdas) || \
(__INTEL_COMPILER >= 1200) || (CRYPTOPP_GCC_VERSION >= 40900) || (__SUNPRO_CC >= 0x5140)
# define CRYPTOPP_CXX11_LAMBDA 1
#endif // lambdas
// noexcept: MS at VS2015 (19.00); GCC at 4.6; Clang at 3.0; Intel 14.0; SunCC 5.13.
#if (CRYPTOPP_MSC_VERSION >= 1900) || __has_feature(cxx_noexcept) || \
(__INTEL_COMPILER >= 1400) || (CRYPTOPP_GCC_VERSION >= 40600) || (__SUNPRO_CC >= 0x5130)
# define CRYPTOPP_CXX11_NOEXCEPT 1
#endif // noexcept compilers
// variadic templates: MS at VS2013 (18.00); GCC at 4.3; Clang at 2.9; Intel 12.1; SunCC 5.13.
#if (__cpp_variadic_templates >= 200704) || __has_feature(cxx_variadic_templates) || \
(CRYPTOPP_MSC_VERSION >= 1800) || (__INTEL_COMPILER >= 1210) || \
(CRYPTOPP_GCC_VERSION >= 40300) || (__SUNPRO_CC >= 0x5130)
# define CRYPTOPP_CXX11_VARIADIC_TEMPLATES 1
#endif // variadic templates
// constexpr: MS at VS2015 (19.00); GCC at 4.6; Clang at 3.1; Intel 16.0; SunCC 5.13.
// Intel has mis-supported the feature since at least ICPC 13.00
#if (__cpp_constexpr >= 200704) || __has_feature(cxx_constexpr) || \
(CRYPTOPP_MSC_VERSION >= 1900) || (__INTEL_COMPILER >= 1600) || \
(CRYPTOPP_GCC_VERSION >= 40600) || (__SUNPRO_CC >= 0x5130)
# define CRYPTOPP_CXX11_CONSTEXPR 1
#endif // constexpr compilers
// strong typed enums: MS at VS2012 (17.00); GCC at 4.4; Clang at 3.3; Intel 14.0; SunCC 5.12.
// Mircorosft and Intel had partial support earlier, but we require full support.
#if (CRYPTOPP_MSC_VERSION >= 1700) || __has_feature(cxx_strong_enums) || \
(__INTEL_COMPILER >= 1400) || (CRYPTOPP_GCC_VERSION >= 40400) || (__SUNPRO_CC >= 0x5120)
# define CRYPTOPP_CXX11_STRONG_ENUM 1
#endif // constexpr compilers
// nullptr_t: MS at VS2010 (16.00); GCC at 4.6; Clang at 3.3; Intel 10.0; SunCC 5.13.
#if (CRYPTOPP_MSC_VERSION >= 1600) || __has_feature(cxx_nullptr) || \
(__INTEL_COMPILER >= 1000) || (CRYPTOPP_GCC_VERSION >= 40600) || \
(__SUNPRO_CC >= 0x5130) || defined(__IBMCPP_NULLPTR)
# define CRYPTOPP_CXX11_NULLPTR 1
#endif // nullptr_t compilers
#endif // CRYPTOPP_CXX11
// ***************** C++14 and above ********************
#if defined(CRYPTOPP_CXX14)
// Extended static_assert with one argument
// Microsoft cannot handle the single argument static_assert as of VS2019 (cl.exe 19.00)
#if (__cpp_static_assert >= 201411)
# define CRYPTOPP_CXX17_STATIC_ASSERT 1
#endif // static_assert
#endif
// ***************** C++17 and above ********************
// C++17 is available
#if defined(CRYPTOPP_CXX17)
// C++17 uncaught_exceptions: MS at VS2015 (19.00); GCC at 6.0; Clang at 3.5; Intel 18.0.
// Clang and __EXCEPTIONS see http://releases.llvm.org/3.6.0/tools/clang/docs/ReleaseNotes.html
// Also see https://github.com/weidai11/cryptopp/issues/980. I'm not sure what
// to do when the compiler defines __cpp_lib_uncaught_exceptions but the platform
// does not support std::uncaught_exceptions. What was Apple thinking???
#if defined(__clang__)
# if __EXCEPTIONS && __has_feature(cxx_exceptions)
# if __cpp_lib_uncaught_exceptions >= 201411L
# define CRYPTOPP_CXX17_UNCAUGHT_EXCEPTIONS 1
# endif
# endif
#elif (CRYPTOPP_MSC_VERSION >= 1900) || (__INTEL_COMPILER >= 1800) || \
(CRYPTOPP_GCC_VERSION >= 60000) || (__cpp_lib_uncaught_exceptions >= 201411L)
# define CRYPTOPP_CXX17_UNCAUGHT_EXCEPTIONS 1
#endif // uncaught_exceptions compilers
#endif // CRYPTOPP_CXX17
// ***************** C++ fixups ********************
#if defined(CRYPTOPP_CXX11_NOEXCEPT)
# define CRYPTOPP_THROW noexcept(false)
# define CRYPTOPP_NO_THROW noexcept(true)
#else
# define CRYPTOPP_THROW
# define CRYPTOPP_NO_THROW
#endif // CRYPTOPP_CXX11_NOEXCEPT
// Hack... C++11 nullptr_t type safety and analysis
#if defined(CRYPTOPP_CXX11_NULLPTR) && !defined(NULLPTR)
# define NULLPTR nullptr
#elif !defined(NULLPTR)
# define NULLPTR NULL
#endif // CRYPTOPP_CXX11_NULLPTR
#endif // CRYPTOPP_CONFIG_CXX_H