Crypto++
8.3
Free C++ class library of cryptographic schemes
config_cxx.h
Go to the documentation of this file.
1
// config_cxx.h - written and placed in public domain by Jeffrey Walton
2
// the bits that make up this source file are from the
3
// library's monolithic config.h.
4
5
/// \file config_cxx.h
6
/// \brief Library configuration file
7
/// \details <tt>config.h</tt> was split into components in May 2019 to better
8
/// integrate with Autoconf and its feature tests. The splitting occurred so
9
/// users could continue to include <tt>config.h</tt> while allowing Autoconf
10
/// to write new <tt>config_asm.h</tt> and new <tt>config_cxx.h</tt> using
11
/// its feature tests.
12
/// \sa <A HREF="https://github.com/weidai11/cryptopp/issues/835">Issue 835</A>
13
/// \since Crypto++ 8.3
14
15
// Visual Studio began at VS2010, http://msdn.microsoft.com/en-us/library/hh567368%28v=vs.110%29.aspx
16
// and https://docs.microsoft.com/en-us/cpp/visual-cpp-language-conformance
17
// Intel, http://software.intel.com/en-us/articles/c0x-features-supported-by-intel-c-compiler
18
// GCC, http://gcc.gnu.org/projects/cxx0x.html
19
// Clang, http://clang.llvm.org/cxx_status.html
20
21
#ifndef CRYPTOPP_CONFIG_CXX_H
22
#define CRYPTOPP_CONFIG_CXX_H
23
24
#include "
config_os.h
"
25
#include "
config_cpu.h
"
26
#include "
config_ver.h
"
27
28
// https://github.com/weidai11/cryptopp/issues/960
29
#include <string>
30
#include <exception>
31
32
// You may need to force include a C++ header on Android when using STLPort
33
// to ensure _STLPORT_VERSION is defined
34
#if (defined(_MSC_VER) && _MSC_VER <= 1300) || defined(__MWERKS__) || (defined(_STLPORT_VERSION) && ((_STLPORT_VERSION < 0x450) || defined(_STLP_NO_UNCAUGHT_EXCEPT_SUPPORT)))
35
#define CRYPTOPP_DISABLE_UNCAUGHT_EXCEPTION
36
#endif
37
38
// Ancient Crypto++ define, dating back to C++98.
39
#ifndef CRYPTOPP_DISABLE_UNCAUGHT_EXCEPTION
40
# define CRYPTOPP_UNCAUGHT_EXCEPTION_AVAILABLE 1
41
# define CRYPTOPP_CXX98_UNCAUGHT_EXCEPTION 1
42
#endif
43
44
// Compatibility with non-clang compilers.
45
#ifndef __has_feature
46
# define __has_feature(x) 0
47
#endif
48
49
// Define CRYPTOPP_NO_CXX11 to avoid C++11 related features shown at the
50
// end of this file. Some compilers and standard C++ headers advertise C++11
51
// but they are really just C++03 with some additional C++11 headers and
52
// non-conforming classes. Also see Issues 529.
53
// #define CRYPTOPP_NO_CXX11 1
54
55
// Define CRYPTOPP_NO_CXX17 to avoid C++17 related features shown at the end of
56
// this file. At the moment it should only affect std::uncaught_exceptions.
57
// #define CRYPTOPP_NO_CXX17 1
58
59
// C++11 macro version, https://stackoverflow.com/q/7223991/608639
60
#if !defined(CRYPTOPP_NO_CXX11)
61
# if ((_MSC_VER >= 1600) || (__cplusplus >= 201103L)) && !defined(_STLPORT_VERSION)
62
# define CRYPTOPP_CXX11 1
63
# endif
64
#endif
65
66
// Hack ahead. Apple's standard library does not have C++'s unique_ptr in C++11.
67
// We can't test for unique_ptr directly because some of the non-Apple Clangs
68
// on OS X fail the same way. However, modern standard libraries have
69
// <forward_list>, so we test for it instead. Thanks to Jonathan Wakely for
70
// devising the clever test for modern/ancient versions. TODO: test under
71
// Xcode 3, where g++ is really g++.
72
#if defined(__APPLE__) && defined(__clang__)
73
# if !(defined(__has_include) && __has_include(<forward_list>))
74
# undef CRYPTOPP_CXX11
75
# endif
76
#endif
77
78
// C++14 macro version, https://stackoverflow.com/q/26089319/608639
79
#if defined(CRYPTOPP_CXX11) && !defined(CRYPTOPP_NO_CXX14)
80
# if ((_MSC_VER >= 1900) || (__cplusplus >= 201402L)) && !defined(_STLPORT_VERSION)
81
# define CRYPTOPP_CXX14 1
82
# endif
83
#endif
84
85
// C++17 macro version, https://stackoverflow.com/q/38456127/608639
86
#if defined(CRYPTOPP_CXX14) && !defined(CRYPTOPP_NO_CXX17)
87
# if ((_MSC_VER >= 1900) || (__cplusplus >= 201703L)) && !defined(_STLPORT_VERSION)
88
# define CRYPTOPP_CXX17 1
89
# endif
90
#endif
91
92
// ***************** C++11 and above ********************
93
94
#if defined(CRYPTOPP_CXX11)
95
96
// atomics: MS at VS2012 (17.00); GCC at 4.4; Clang at 3.1/3.2; Intel 13.0; SunCC 5.14.
97
#if (CRYPTOPP_MSC_VERSION >= 1700) || __has_feature(cxx_atomic) || \
98
(__INTEL_COMPILER >= 1300) || (CRYPTOPP_GCC_VERSION >= 40400) || (__SUNPRO_CC >= 0x5140)
99
# define CRYPTOPP_CXX11_ATOMIC 1
100
#endif // atomics
101
102
// synchronization: MS at VS2012 (17.00); GCC at 4.4; Clang at 3.3; Xcode 5.0; Intel 12.0; SunCC 5.13.
103
// TODO: verify Clang and Intel versions; find __has_feature(x) extension for Clang
104
#if (CRYPTOPP_MSC_VERSION >= 1700) || (CRYPTOPP_LLVM_CLANG_VERSION >= 30300) || \
105
(CRYPTOPP_APPLE_CLANG_VERSION >= 50000) || (__INTEL_COMPILER >= 1200) || \
106
(CRYPTOPP_GCC_VERSION >= 40400) || (__SUNPRO_CC >= 0x5130)
107
// Hack ahead. New GCC compilers like GCC 6 on AIX 7.0 or earlier as well as original MinGW
108
// don't have the synchronization gear. However, Wakely's test used for Apple does not work
109
// on the GCC/AIX combination. Another twist is we need other stuff from C++11,
110
// like no-except destructors. Dumping preprocessors shows the following may
111
// apply: http://stackoverflow.com/q/14191566/608639.
112
# include <cstddef>
113
# if !defined(__GLIBCXX__) || defined(_GLIBCXX_HAS_GTHREADS)
114
# define CRYPTOPP_CXX11_SYNCHRONIZATION 1
115
# endif
116
#endif // synchronization
117
118
// Dynamic Initialization and Destruction with Concurrency ("Magic Statics")
119
// 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.
120
// Microsoft's implementation only works for Vista and above, so its further
121
// limited. http://connect.microsoft.com/VisualStudio/feedback/details/1789709
122
// Clang may not support this as early as we indicate. Also see https://bugs.llvm.org/show_bug.cgi?id=47012.
123
#if (__cpp_threadsafe_static_init >= 200806) || \
124
(CRYPTOPP_MSC_VERSION >= 1900) && ((WINVER >= 0x0600) || (_WIN32_WINNT >= 0x0600)) || \
125
(CRYPTOPP_LLVM_CLANG_VERSION >= 20900) || (CRYPTOPP_APPLE_CLANG_VERSION >= 40000) || \
126
(__INTEL_COMPILER >= 1110) || (CRYPTOPP_GCC_VERSION >= 40300) || (__SUNPRO_CC >= 0x5130)
127
# define CRYPTOPP_CXX11_STATIC_INIT 1
128
#endif // Dynamic Initialization compilers
129
130
// deleted functions: MS at VS2013 (18.00); GCC at 4.3; Clang at 2.9; Intel 12.1; SunCC 5.13.
131
#if (CRYPTOPP_MSC_VERSION >= 1800) || (CRYPTOPP_LLVM_CLANG_VERSION >= 20900) || \
132
(CRYPTOPP_APPLE_CLANG_VERSION >= 40000) || (__INTEL_COMPILER >= 1210) || \
133
(CRYPTOPP_GCC_VERSION >= 40300) || (__SUNPRO_CC >= 0x5130)
134
# define CRYPTOPP_CXX11_DELETED_FUNCTIONS 1
135
#endif // deleted functions
136
137
// alignof/alignas: MS at VS2015 (19.00); GCC at 4.8; Clang at 3.0; Intel 15.0; SunCC 5.13.
138
#if (CRYPTOPP_MSC_VERSION >= 1900) || __has_feature(cxx_alignas) || \
139
(__INTEL_COMPILER >= 1500) || (CRYPTOPP_GCC_VERSION >= 40800) || (__SUNPRO_CC >= 0x5130)
140
# define CRYPTOPP_CXX11_ALIGNAS 1
141
#endif // alignas
142
143
// alignof: MS at VS2015 (19.00); GCC at 4.5; Clang at 2.9; Intel 15.0; SunCC 5.13.
144
#if (CRYPTOPP_MSC_VERSION >= 1900) || __has_feature(cxx_alignof) || \
145
(__INTEL_COMPILER >= 1500) || (CRYPTOPP_GCC_VERSION >= 40500) || (__SUNPRO_CC >= 0x5130)
146
# define CRYPTOPP_CXX11_ALIGNOF 1
147
#endif // alignof
148
149
// initializer lists: MS at VS2013 (18.00); GCC at 4.4; Clang at 3.1; Intel 14.0; SunCC 5.13.
150
#if (CRYPTOPP_MSC_VERSION >= 1800) || (CRYPTOPP_LLVM_CLANG_VERSION >= 30100) || \
151
(CRYPTOPP_APPLE_CLANG_VERSION >= 40000) || (__INTEL_COMPILER >= 1400) || \
152
(CRYPTOPP_GCC_VERSION >= 40400) || (__SUNPRO_CC >= 0x5130)
153
# define CRYPTOPP_CXX11_INITIALIZER_LIST 1
154
#endif // alignas
155
156
// lambdas: MS at VS2012 (17.00); GCC at 4.9; Clang at 3.3; Intel 12.0; SunCC 5.14.
157
#if (CRYPTOPP_MSC_VERSION >= 1700) || __has_feature(cxx_lambdas) || \
158
(__INTEL_COMPILER >= 1200) || (CRYPTOPP_GCC_VERSION >= 40900) || (__SUNPRO_CC >= 0x5140)
159
# define CRYPTOPP_CXX11_LAMBDA 1
160
#endif // lambdas
161
162
// noexcept: MS at VS2015 (19.00); GCC at 4.6; Clang at 3.0; Intel 14.0; SunCC 5.13.
163
#if (CRYPTOPP_MSC_VERSION >= 1900) || __has_feature(cxx_noexcept) || \
164
(__INTEL_COMPILER >= 1400) || (CRYPTOPP_GCC_VERSION >= 40600) || (__SUNPRO_CC >= 0x5130)
165
# define CRYPTOPP_CXX11_NOEXCEPT 1
166
#endif // noexcept compilers
167
168
// variadic templates: MS at VS2013 (18.00); GCC at 4.3; Clang at 2.9; Intel 12.1; SunCC 5.13.
169
#if (__cpp_variadic_templates >= 200704) || __has_feature(cxx_variadic_templates) || \
170
(CRYPTOPP_MSC_VERSION >= 1800) || (__INTEL_COMPILER >= 1210) || \
171
(CRYPTOPP_GCC_VERSION >= 40300) || (__SUNPRO_CC >= 0x5130)
172
# define CRYPTOPP_CXX11_VARIADIC_TEMPLATES 1
173
#endif // variadic templates
174
175
// constexpr: MS at VS2015 (19.00); GCC at 4.6; Clang at 3.1; Intel 16.0; SunCC 5.13.
176
// Intel has mis-supported the feature since at least ICPC 13.00
177
#if (__cpp_constexpr >= 200704) || __has_feature(cxx_constexpr) || \
178
(CRYPTOPP_MSC_VERSION >= 1900) || (__INTEL_COMPILER >= 1600) || \
179
(CRYPTOPP_GCC_VERSION >= 40600) || (__SUNPRO_CC >= 0x5130)
180
# define CRYPTOPP_CXX11_CONSTEXPR 1
181
#endif // constexpr compilers
182
183
// strong typed enums: MS at VS2012 (17.00); GCC at 4.4; Clang at 3.3; Intel 14.0; SunCC 5.12.
184
// Mircorosft and Intel had partial support earlier, but we require full support.
185
#if (CRYPTOPP_MSC_VERSION >= 1700) || __has_feature(cxx_strong_enums) || \
186
(__INTEL_COMPILER >= 1400) || (CRYPTOPP_GCC_VERSION >= 40400) || (__SUNPRO_CC >= 0x5120)
187
# define CRYPTOPP_CXX11_STRONG_ENUM 1
188
#endif // constexpr compilers
189
190
// nullptr_t: MS at VS2010 (16.00); GCC at 4.6; Clang at 3.3; Intel 10.0; SunCC 5.13.
191
#if (CRYPTOPP_MSC_VERSION >= 1600) || __has_feature(cxx_nullptr) || \
192
(__INTEL_COMPILER >= 1000) || (CRYPTOPP_GCC_VERSION >= 40600) || \
193
(__SUNPRO_CC >= 0x5130) || defined(__IBMCPP_NULLPTR)
194
# define CRYPTOPP_CXX11_NULLPTR 1
195
#endif // nullptr_t compilers
196
197
#endif // CRYPTOPP_CXX11
198
199
// ***************** C++14 and above ********************
200
201
#if defined(CRYPTOPP_CXX14)
202
203
// Extended static_assert with one argument
204
// Microsoft cannot handle the single argument static_assert as of VS2019 (cl.exe 19.00)
205
#if (__cpp_static_assert >= 201411)
206
# define CRYPTOPP_CXX17_STATIC_ASSERT 1
207
#endif // static_assert
208
209
#endif
210
211
// ***************** C++17 and above ********************
212
213
// C++17 is available
214
#if defined(CRYPTOPP_CXX17)
215
216
// C++17 uncaught_exceptions: MS at VS2015 (19.00); GCC at 6.0; Clang at 3.5; Intel 18.0.
217
// Clang and __EXCEPTIONS see http://releases.llvm.org/3.6.0/tools/clang/docs/ReleaseNotes.html
218
// Also see https://github.com/weidai11/cryptopp/issues/980. I'm not sure what
219
// to do when the compiler defines __cpp_lib_uncaught_exceptions but the platform
220
// does not support std::uncaught_exceptions. What was Apple thinking???
221
#if defined(__clang__)
222
# if __EXCEPTIONS && __has_feature(cxx_exceptions)
223
# if __cpp_lib_uncaught_exceptions >= 201411L
224
# define CRYPTOPP_CXX17_UNCAUGHT_EXCEPTIONS 1
225
# endif
226
# endif
227
#elif (CRYPTOPP_MSC_VERSION >= 1900) || (__INTEL_COMPILER >= 1800) || \
228
(CRYPTOPP_GCC_VERSION >= 60000) || (__cpp_lib_uncaught_exceptions >= 201411L)
229
# define CRYPTOPP_CXX17_UNCAUGHT_EXCEPTIONS 1
230
#endif // uncaught_exceptions compilers
231
232
#endif // CRYPTOPP_CXX17
233
234
// ***************** C++ fixups ********************
235
236
#if defined(CRYPTOPP_CXX11_NOEXCEPT)
237
# define CRYPTOPP_THROW noexcept(false)
238
# define CRYPTOPP_NO_THROW noexcept(true)
239
#else
240
# define CRYPTOPP_THROW
241
# define CRYPTOPP_NO_THROW
242
#endif // CRYPTOPP_CXX11_NOEXCEPT
243
244
// Hack... C++11 nullptr_t type safety and analysis
245
#if defined(CRYPTOPP_CXX11_NULLPTR) && !defined(NULLPTR)
246
# define NULLPTR nullptr
247
#elif !defined(NULLPTR)
248
# define NULLPTR NULL
249
#endif // CRYPTOPP_CXX11_NULLPTR
250
251
#endif // CRYPTOPP_CONFIG_CXX_H
config_cpu.h
Library configuration file.
config_os.h
Library configuration file.
config_ver.h
Library configuration file.
Generated on Fri Dec 25 2020 17:16:54 for Crypto++ by
1.8.20