path: root/config.h

// config.h - originally written and placed in the public domain by Wei Dai

/// \file config.h
/// \brief Library configuration file

#ifndef CRYPTOPP_CONFIG_H
#define CRYPTOPP_CONFIG_H

// ***************** Important Settings ********************

// define this if running on a big-endian CPU
#if !defined(CRYPTOPP_LITTLE_ENDIAN) && !defined(CRYPTOPP_BIG_ENDIAN) && (defined(__BIG_ENDIAN__) || (defined(__s390__) || defined(__s390x__) || defined(__zarch__)) || (defined(__m68k__) || defined(__MC68K__)) || defined(__sparc) || defined(__sparc__) || defined(__hppa__) || defined(__MIPSEB__) || defined(__ARMEB__) || (defined(__MWERKS__) && !defined(__INTEL__)))
#	define CRYPTOPP_BIG_ENDIAN 1
#endif

// define this if running on a little-endian CPU
// big endian will be assumed if CRYPTOPP_LITTLE_ENDIAN is not defined
#if !defined(CRYPTOPP_BIG_ENDIAN) && !defined(CRYPTOPP_LITTLE_ENDIAN)
#	define CRYPTOPP_LITTLE_ENDIAN 1
#endif

// Sanity checks. Some processors have more than big, little and bi-endian modes. PDP mode, where order results in "4312", should
// raise red flags immediately. Additionally, mis-classified machines, like (previosuly) S/390, should raise red flags immediately.
#if defined(CRYPTOPP_BIG_ENDIAN) && defined(__GNUC__) && defined(__BYTE_ORDER__) && (__BYTE_ORDER__ != __ORDER_BIG_ENDIAN__)
# error "CRYPTOPP_BIG_ENDIAN is set, but __BYTE_ORDER__ is not __ORDER_BIG_ENDIAN__"
#endif
#if defined(CRYPTOPP_LITTLE_ENDIAN) && defined(__GNUC__) && defined(__BYTE_ORDER__) && (__BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__)
# error "CRYPTOPP_LITTLE_ENDIAN is set, but __BYTE_ORDER__ is not __ORDER_LITTLE_ENDIAN__"
#endif

// Define this if you want to disable all OS-dependent features,
// such as sockets and OS-provided random number generators
// #define NO_OS_DEPENDENCE

// Define this to use features provided by Microsoft's CryptoAPI.
// Currently the only feature used is Windows random number generation.
// This macro will be ignored if NO_OS_DEPENDENCE is defined.
// #define USE_MS_CRYPTOAPI

// Define this to use features provided by Microsoft's CryptoNG API.
// CryptoNG API is available in Vista and above and its cross platform,
// including desktop apps and store apps. Currently the only feature
// used is Windows random number generation.
// This macro will be ignored if NO_OS_DEPENDENCE is defined.
// #define USE_MS_CNGAPI

// If the user did not make a choice, then select CryptoNG if
// targeting Windows 8 or above.
#if !defined(USE_MS_CRYPTOAPI) && !defined(USE_MS_CNGAPI)
# if !defined(_USING_V110_SDK71_) && ((WINVER >= 0x0602 /*_WIN32_WINNT_WIN8*/) || (_WIN32_WINNT >= 0x0602 /*_WIN32_WINNT_WIN8*/))
#  define USE_MS_CNGAPI
# else
#  define USE_MS_CRYPTOAPI
# endif
#endif

// Define this to disable ASM, intrinsics and built-ins. The library will be
// compiled using C++ only. The library code will not include SSE2 (and
// above), NEON, Aarch32, Aarch64, Power4, Power7 or Power8. Note the compiler
// may use higher ISAs depending on compiler options, but the library will not
// explictly use the ISAs.
// #define CRYPTOPP_DISABLE_ASM 1

// Define CRYPTOPP_NO_CXX11 to avoid C++11 related features shown at the
// end of this file. Some compilers and standard C++ headers advertise C++11
// but they are really just C++03 with some additional C++11 headers and
// non-conforming classes. You might also consider `-std=c++03` or
// `-std=gnu++03`, but they are required options when building the library
// and all programs. CRYPTOPP_NO_CXX11 is probably easier to manage but it may
// cause -Wterminate warnings under GCC. MSVC++ has a similar warning.
// Also see https://github.com/weidai11/cryptopp/issues/529
// #define CRYPTOPP_NO_CXX11 1

// Define CRYPTOPP_NO_CXX17 to avoid C++17 related features shown at the end of
// this file. At the moment it should only affect std::uncaught_exceptions.
// #define CRYPTOPP_NO_CXX17 1

// CRYPTOPP_ALLOW_UNALIGNED_DATA_ACCESS is no longer honored. It
// was removed at https://github.com/weidai11/cryptopp/issues/682
// #define CRYPTOPP_ALLOW_UNALIGNED_DATA_ACCESS 1

// ***************** Less Important Settings ***************

// Library version macro. Since this macro is in a header, it reflects
//   the version of the library the headers came from. It is not
//   necessarily the version of the library built as a shared object if
//   versions are inadvertently mixed and matched.
#define CRYPTOPP_VERSION 710

// Define this if you want to set a prefix for TestData/ and TestVectors/
//   Be mindful of the trailing slash since its simple concatenation.
//   g++ ... -DCRYPTOPP_DATA_DIR='"/tmp/cryptopp_test/share/"'
#ifndef CRYPTOPP_DATA_DIR
# define CRYPTOPP_DATA_DIR ""
#endif

// Define this if you want or need the library's memcpy_s and memmove_s.
//   See http://github.com/weidai11/cryptopp/issues/28.
// #if !defined(CRYPTOPP_WANT_SECURE_LIB)
// # define CRYPTOPP_WANT_SECURE_LIB
// #endif

// File system code to write to GZIP archive.
//   http://www.gzip.org/format.txt
#if !defined(GZIP_OS_CODE)
# if defined(__macintosh__)
#  define GZIP_OS_CODE 7
# elif defined(__unix__) || defined(__linux__)
#  define GZIP_OS_CODE 3
# else
#  define GZIP_OS_CODE 0
# endif
#endif

// Try this if your CPU has 256K internal cache or a slow multiply instruction
// and you want a (possibly) faster IDEA implementation using log tables
// #define IDEA_LARGECACHE

// Define this if, for the linear congruential RNG, you want to use
// the original constants as specified in S.K. Park and K.W. Miller's
// CACM paper.
// #define LCRNG_ORIGINAL_NUMBERS

// Define this if you want Integer's operator<< to honor std::showbase (and
// std::noshowbase). If defined, Integer will use a suffix of 'b', 'o', 'h'
// or '.' (the last for decimal) when std::showbase is in effect. If
// std::noshowbase is set, then the suffix is not added to the Integer. If
// not defined, existing behavior is preserved and Integer will use a suffix
// of 'b', 'o', 'h' or '.' (the last for decimal).
// #define CRYPTOPP_USE_STD_SHOWBASE

// Define this if ARMv8 shifts are slow. ARM Cortex-A53 and Cortex-A57 shift
// operation perform poorly, so NEON and ASIMD code that relies on shifts
// or rotates often performs worse than C/C++ code. Also see
// http://github.com/weidai11/cryptopp/issues/367.
#define CRYPTOPP_SLOW_ARMV8_SHIFT 1

// Define this if you want to decouple AlgorithmParameters and Integer
// The decoupling should make it easier for the linker to remove Integer
// related code for those who do not need Integer, and avoid a potential
// race during AssignIntToInteger pointer initialization. Also
// see http://github.com/weidai11/cryptopp/issues/389.
// #define CRYPTOPP_NO_ASSIGN_TO_INTEGER

// set the name of Rijndael cipher, was "Rijndael" before version 5.3
#define CRYPTOPP_RIJNDAEL_NAME "AES"

// CRYPTOPP_DEBUG enables the library's CRYPTOPP_ASSERT. CRYPTOPP_ASSERT
//   raises a SIGTRAP (Unix) or calls DebugBreak() (Windows). CRYPTOPP_ASSERT
//   is only in effect when CRYPTOPP_DEBUG, DEBUG or _DEBUG is defined. Unlike
//   Posix assert, CRYPTOPP_ASSERT is not affected by NDEBUG (or failure to
//   define it).
//   Also see http://github.com/weidai11/cryptopp/issues/277, CVE-2016-7420
#if (defined(DEBUG) || defined(_DEBUG)) && !defined(CRYPTOPP_DEBUG)
# define CRYPTOPP_DEBUG 1
#endif

// ***************** Important Settings Again ********************
// But the defaults should be ok.

// namespace support is now required
#ifdef NO_NAMESPACE
#	error namespace support is now required
#endif

#ifdef CRYPTOPP_DOXYGEN_PROCESSING
// Document the namespce exists. Put it here before CryptoPP is undefined below.
/// \namespace CryptoPP
/// \brief Crypto++ library namespace
/// \details Nearly all classes are located in the CryptoPP namespace. Within
///   the namespace, there are two additional namespaces.
///   <ul>
///     <li>Name - namespace for names used with \p NameValuePairs and documented in argnames.h
///     <li>NaCl - namespace for NaCl library functions like crypto_box, crypto_box_open, crypto_sign, and crypto_sign_open
///     <li>Test - namespace for testing and benchmarks classes
///     <li>Weak - namespace for weak and wounded algorithms, like ARC4, MD5 and Pananma
///   </ul>
namespace CryptoPP { }
// Bring in the symbols found in the weak namespace; and fold Weak1 into Weak
#		define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1
#		define Weak1 Weak
// Avoid putting "CryptoPP::" in front of everything in Doxygen output
#       define CryptoPP
#       define NAMESPACE_BEGIN(x)
#       define NAMESPACE_END
// Get Doxygen to generate better documentation for these typedefs
#       define DOCUMENTED_TYPEDEF(x, y) class y : public x {};
// Make "protected" "private" so the functions and members are not documented
#		define protected private
#else
#       define NAMESPACE_BEGIN(x) namespace x {
#       define NAMESPACE_END }
#       define DOCUMENTED_TYPEDEF(x, y) typedef x y;
#endif
#define ANONYMOUS_NAMESPACE_BEGIN namespace {
#define ANONYMOUS_NAMESPACE_END }
#define USING_NAMESPACE(x) using namespace x;
#define DOCUMENTED_NAMESPACE_BEGIN(x) namespace x {
#define DOCUMENTED_NAMESPACE_END }

// What is the type of the third parameter to bind?
// For Unix, the new standard is ::socklen_t (typically unsigned int), and the old standard is int.
// Unfortunately there is no way to tell whether or not socklen_t is defined.
// To work around this, TYPE_OF_SOCKLEN_T is a macro so that you can change it from the makefile.
#ifndef TYPE_OF_SOCKLEN_T
#	if defined(_WIN32) || defined(__CYGWIN__)
#		define TYPE_OF_SOCKLEN_T int
#	else
#		define TYPE_OF_SOCKLEN_T ::socklen_t
#	endif
#endif

// Originally in global namespace to avoid ambiguity with other byte typedefs.
// Moved to Crypto++ namespace due to C++17, std::byte and potential compile problems. Also see
// http://www.cryptopp.com/wiki/std::byte and http://github.com/weidai11/cryptopp/issues/442
// typedef unsigned char byte;
#define CRYPTOPP_NO_GLOBAL_BYTE 1

NAMESPACE_BEGIN(CryptoPP)

// Signed words added at Issue 609 for early versions of and Visual Studio and
//   the NaCl gear.  Also see https://github.com/weidai11/cryptopp/issues/609.

typedef unsigned char byte;
typedef unsigned short word16;
typedef unsigned int word32;

typedef signed char sbyte;
typedef signed short sword16;
typedef signed int sword32;

#if defined(_MSC_VER) || defined(__BORLANDC__)
	typedef signed __int64 sword64;
	typedef unsigned __int64 word64;
	#define SW64LIT(x) x##i64
	#define W64LIT(x) x##ui64
#elif (_LP64 || __LP64__)
	typedef signed long sword64;
	typedef unsigned long word64;
	#define SW64LIT(x) x##L
	#define W64LIT(x) x##UL
#else
	typedef signed long long sword64;
	typedef unsigned long long word64;
	#define SW64LIT(x) x##LL
	#define W64LIT(x) x##ULL
#endif

// define large word type, used for file offsets and such
typedef word64 lword;
const lword LWORD_MAX = W64LIT(0xffffffffffffffff);

// Clang pretends to be VC++, too.
//   See http://github.com/weidai11/cryptopp/issues/147
#if defined(_MSC_VER) && defined(__clang__)
# error: "Unsupported configuration"
#endif

#ifdef __GNUC__
	#define CRYPTOPP_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
#endif

#if defined(__xlc__) || defined(__xlC__)
	#define CRYPTOPP_XLC_VERSION ((__xlC__ / 256) * 10000 + (__xlC__ % 256) * 100)
#endif

// Apple and LLVM's Clang. Apple Clang version 7.0 roughly equals LLVM Clang version 3.7
#if defined(__clang__) && defined(__apple_build_version__)
	#define CRYPTOPP_APPLE_CLANG_VERSION (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__)
	#define CRYPTOPP_CLANG_INTEGRATED_ASSEMBLER 1
#elif defined(__clang__)
	#define CRYPTOPP_LLVM_CLANG_VERSION  (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__)
	#define CRYPTOPP_CLANG_INTEGRATED_ASSEMBLER 1
#endif

#ifdef _MSC_VER
	#define CRYPTOPP_MSC_VERSION (_MSC_VER)
#endif

// Need GCC 4.6/Clang 1.7/Apple Clang 2.0 or above due to "GCC diagnostic {push|pop}"
#if (CRYPTOPP_GCC_VERSION >= 40600) || (CRYPTOPP_LLVM_CLANG_VERSION >= 10700) || (CRYPTOPP_APPLE_CLANG_VERSION >= 20000)
	#define CRYPTOPP_GCC_DIAGNOSTIC_AVAILABLE 1
#endif

// Clang due to "Inline assembly operands don't work with .intel_syntax", http://llvm.org/bugs/show_bug.cgi?id=24232. Still broke as of Clang 3.9.
//   TODO: supply the upper version when LLVM fixes it. We set it to 20.0 for compilation purposes.
#if (defined(CRYPTOPP_LLVM_CLANG_VERSION) && (CRYPTOPP_LLVM_CLANG_VERSION <= 200000)) || \
	(defined(CRYPTOPP_APPLE_CLANG_VERSION) && (CRYPTOPP_APPLE_CLANG_VERSION <= 200000)) || \
	defined(CRYPTOPP_CLANG_INTEGRATED_ASSEMBLER)
	#define CRYPTOPP_DISABLE_INTEL_ASM 1
#endif

// define hword, word, and dword. these are used for multiprecision integer arithmetic
// Intel compiler won't have _umul128 until version 10.0. See http://softwarecommunity.intel.com/isn/Community/en-US/forums/thread/30231625.aspx
#if (defined(_MSC_VER) && (!defined(__INTEL_COMPILER) || __INTEL_COMPILER >= 1000) && (defined(_M_X64) || defined(_M_IA64))) || (defined(__DECCXX) && defined(__alpha__)) || (defined(__INTEL_COMPILER) && defined(__x86_64__)) || (defined(__SUNPRO_CC) && defined(__x86_64__))
	typedef word32 hword;
	typedef word64 word;
#else
	#define CRYPTOPP_NATIVE_DWORD_AVAILABLE 1
	#if defined(__alpha__) || defined(__ia64__) || defined(_ARCH_PPC64) || defined(__x86_64__) || defined(__mips64) || defined(__sparc64__)
		#if ((CRYPTOPP_GCC_VERSION >= 30400) || (CRYPTOPP_LLVM_CLANG_VERSION >= 30000) || (CRYPTOPP_APPLE_CLANG_VERSION >= 40300)) && (__SIZEOF_INT128__ >= 16)
			// GCC 4.0.1 on MacOS X is missing __umodti3 and __udivti3
			// GCC 4.8.3 and bad uint128_t ops on PPC64/POWER7 (Issue 421)
			// mode(TI) division broken on amd64 with GCC earlier than GCC 3.4
			typedef word32 hword;
			typedef word64 word;
			typedef __uint128_t dword;
			typedef __uint128_t word128;
			#define CRYPTOPP_WORD128_AVAILABLE 1
		#else
			// if we're here, it means we're on a 64-bit CPU but we don't have a way to obtain 128-bit multiplication results
			typedef word16 hword;
			typedef word32 word;
			typedef word64 dword;
		#endif
	#else
		// being here means the native register size is probably 32 bits or less
		#define CRYPTOPP_BOOL_SLOW_WORD64 1
		typedef word16 hword;
		typedef word32 word;
		typedef word64 dword;
	#endif
#endif
#ifndef CRYPTOPP_BOOL_SLOW_WORD64
	#define CRYPTOPP_BOOL_SLOW_WORD64 0
#endif

const unsigned int WORD_SIZE = sizeof(word);
const unsigned int WORD_BITS = WORD_SIZE * 8;

NAMESPACE_END

#ifndef CRYPTOPP_L1_CACHE_LINE_SIZE
	// This should be a lower bound on the L1 cache line size. It's used for defense against timing attacks.
	// Also see http://stackoverflow.com/questions/794632/programmatically-get-the-cache-line-size.
	#if defined(_M_X64) || defined(__x86_64__) || defined(__arm64__) || defined(__aarch64__) || defined(__powerpc64__) || defined(_ARCH_PPC64)
		#define CRYPTOPP_L1_CACHE_LINE_SIZE 64
	#else
		// L1 cache line size is 32 on Pentium III and earlier
		#define CRYPTOPP_L1_CACHE_LINE_SIZE 32
	#endif
#endif

// Sun Studio Express 3 (December 2006) provides GCC-style attributes.
// IBM XL C/C++ alignment modifier per Optimization Guide, pp. 19-20.
// CRYPTOPP_ALIGN_DATA may not be reliable on AIX.
#ifndef CRYPTOPP_ALIGN_DATA
	#if defined(_MSC_VER)
		#define CRYPTOPP_ALIGN_DATA(x) __declspec(align(x))
	#elif defined(__GNUC__) || (__SUNPRO_CC >= 0x5100)
		#define CRYPTOPP_ALIGN_DATA(x) __attribute__((aligned(x)))
	#elif defined(__xlc__) || defined(__xlC__)
		#define CRYPTOPP_ALIGN_DATA(x) __attribute__((aligned(x)))
	#else
		#define CRYPTOPP_ALIGN_DATA(x)
	#endif
#endif

// The section attribute attempts to initialize CPU flags to avoid Valgrind findings above -O1
#if ((defined(__MACH__) && defined(__APPLE__)) && ((CRYPTOPP_LLVM_CLANG_VERSION >= 30600) || (CRYPTOPP_APPLE_CLANG_VERSION >= 70100) || (CRYPTOPP_GCC_VERSION >= 40300)))
	#define CRYPTOPP_SECTION_INIT __attribute__((section ("__DATA,__data")))
#elif (defined(__ELF__) && (CRYPTOPP_GCC_VERSION >= 40300))
	#define CRYPTOPP_SECTION_INIT __attribute__((section ("nocommon")))
#else
	#define CRYPTOPP_SECTION_INIT
#endif

#if defined(_MSC_VER) || defined(__fastcall)
	#define CRYPTOPP_FASTCALL __fastcall
#else
	#define CRYPTOPP_FASTCALL
#endif

#ifdef _MSC_VER
#define CRYPTOPP_NO_VTABLE __declspec(novtable)
#else
#define CRYPTOPP_NO_VTABLE
#endif

#ifdef _MSC_VER
	// 4127: conditional expression is constant
	// 4231: nonstandard extension used : 'extern' before template explicit instantiation
	// 4250: dominance
	// 4251: member needs to have dll-interface
	// 4275: base needs to have dll-interface
	// 4505: unreferenced local function
	// 4512: assignment operator not generated
	// 4660: explicitly instantiating a class that's already implicitly instantiated
	// 4661: no suitable definition provided for explicit template instantiation request
	// 4786: identifier was truncated in debug information
	// 4355: 'this' : used in base member initializer list
	// 4910: '__declspec(dllexport)' and 'extern' are incompatible on an explicit instantiation
#	pragma warning(disable: 4127 4512 4661 4910)
	// Security related, possible defects
	// http://blogs.msdn.com/b/vcblog/archive/2010/12/14/off-by-default-compiler-warnings-in-visual-c.aspx
#	pragma warning(once: 4191 4242 4263 4264 4266 4302 4826 4905 4906 4928)
#endif

#ifdef __BORLANDC__
// 8037: non-const function called for const object. needed to work around BCB2006 bug
#	pragma warn -8037
#endif

// [GCC Bug 53431] "C++ preprocessor ignores #pragma GCC diagnostic". Clang honors it.
#if CRYPTOPP_GCC_DIAGNOSTIC_AVAILABLE
# pragma GCC diagnostic ignored "-Wunknown-pragmas"
# pragma GCC diagnostic ignored "-Wunused-function"
#endif

// You may need to force include a C++ header on Android when using STLPort to ensure
// _STLPORT_VERSION is defined: CXXFLAGS="-DNDEBUG -g2 -O2 -std=c++11 -include iosfwd"
// TODO: Figure out C++17 and lack of std::uncaught_exception
#if (defined(_MSC_VER) && _MSC_VER <= 1300) || defined(__MWERKS__) || (defined(_STLPORT_VERSION) && ((_STLPORT_VERSION < 0x450) || defined(_STLP_NO_UNCAUGHT_EXCEPT_SUPPORT)))
#define CRYPTOPP_DISABLE_UNCAUGHT_EXCEPTION
#endif

#ifndef CRYPTOPP_DISABLE_UNCAUGHT_EXCEPTION
#define CRYPTOPP_UNCAUGHT_EXCEPTION_AVAILABLE
#endif

// ***************** Platform and CPU features ********************

// Linux provides X32, which is 32-bit integers, longs and pointers on x86_64 using the full x86_64 register set.
// Detect via __ILP32__ (http://wiki.debian.org/X32Port). However, __ILP32__ shows up in more places than
// the System V ABI specs calls out, like on some Solaris installations and just about any 32-bit system with Clang.
#if (defined(__ILP32__) || defined(_ILP32)) && defined(__x86_64__)
	#define CRYPTOPP_BOOL_X32 1
#endif

// see http://predef.sourceforge.net/prearch.html
#if (defined(_M_IX86) || defined(__i386__) || defined(__i386) || defined(_X86_) || defined(__I86__) || defined(__INTEL__)) && !CRYPTOPP_BOOL_X32
	#define CRYPTOPP_BOOL_X86 1
#endif

#if (defined(_M_X64) || defined(__x86_64__)) && !CRYPTOPP_BOOL_X32
	#define CRYPTOPP_BOOL_X64 1
#endif

// Undo the ASM and Intrinsic related defines due to X32.
#if CRYPTOPP_BOOL_X32
# undef CRYPTOPP_BOOL_X64
# undef CRYPTOPP_X64_ASM_AVAILABLE
# undef CRYPTOPP_X64_MASM_AVAILABLE
#endif

// Microsoft plans to support ARM-64, but its not clear how to detect it.
//   TODO: Add MSC_VER and ARM-64 platform define when available
#if defined(__arm64__) || defined(__aarch64__) || defined(_M_ARM64)
	#define CRYPTOPP_BOOL_ARM64 1
#elif defined(__arm__) || defined(__aarch32__) || defined(_M_ARM)
	#define CRYPTOPP_BOOL_ARM32 1
#endif

// AltiVec and Power8 crypto
#if defined(__powerpc64__) || defined(_ARCH_PPC64)
	#define CRYPTOPP_BOOL_PPC64 1
#elif defined(__powerpc__) || defined(_ARCH_PPC)
	#define CRYPTOPP_BOOL_PPC32 1
#endif

#if defined(_MSC_VER) || defined(__BORLANDC__)
# define CRYPTOPP_MS_STYLE_INLINE_ASSEMBLY 1
#else
# define CRYPTOPP_GNU_STYLE_INLINE_ASSEMBLY 1
#endif

// ***************** IA32 CPU features ********************

#if (CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X64)

// Apple Clang prior to 5.0 cannot handle SSE2
#if defined(CRYPTOPP_APPLE_CLANG_VERSION) && (CRYPTOPP_APPLE_CLANG_VERSION < 50000)
# define CRYPTOPP_DISABLE_ASM
#endif

// Sun Studio 12 provides GCC inline assembly, http://blogs.oracle.com/x86be/entry/gcc_style_asm_inlining_support
// We can enable SSE2 for Sun Studio in the makefile with -D__SSE2__, but users may not compile with it.
#if !defined(CRYPTOPP_DISABLE_ASM) && !defined(__SSE2__) && defined(__x86_64__) && (__SUNPRO_CC >= 0x5100)
# define __SSE2__ 1
#endif

#if !defined(CRYPTOPP_DISABLE_ASM) && ((defined(_MSC_VER) && defined(_M_IX86)) || (defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))))
	// C++Builder 2010 does not allow "call label" where label is defined within inline assembly
	#define CRYPTOPP_X86_ASM_AVAILABLE 1

	#if !defined(CRYPTOPP_DISABLE_SSE2) && (defined(_MSC_VER) || CRYPTOPP_GCC_VERSION >= 30300 || defined(__SSE2__))
		#define CRYPTOPP_SSE2_ASM_AVAILABLE 1
	#endif

	#if !defined(CRYPTOPP_DISABLE_SSSE3) && (_MSC_VER >= 1500 || defined(__SSSE3__))
		#define CRYPTOPP_SSSE3_ASM_AVAILABLE 1
	#endif
#endif

#if !defined(CRYPTOPP_DISABLE_ASM) && defined(_MSC_VER) && defined(_M_X64)
	#define CRYPTOPP_X64_MASM_AVAILABLE 1
#endif

#if !defined(CRYPTOPP_DISABLE_ASM) && defined(__GNUC__) && defined(__x86_64__)
	#define CRYPTOPP_X64_ASM_AVAILABLE 1
#endif

// 32-bit SunCC does not enable SSE2 by default.
#if !defined(CRYPTOPP_DISABLE_ASM) && (defined(_MSC_VER) || defined(__SSE2__))
	#define CRYPTOPP_SSE2_INTRIN_AVAILABLE 1
#endif

#if !defined(CRYPTOPP_DISABLE_ASM) && !defined(CRYPTOPP_DISABLE_SSSE3)
# if defined(__SSSE3__) || (_MSC_VER >= 1500) || \
	(CRYPTOPP_GCC_VERSION >= 40300) || (__INTEL_COMPILER >= 1000) || (__SUNPRO_CC >= 0x5110) || \
	(CRYPTOPP_LLVM_CLANG_VERSION >= 20300) || (CRYPTOPP_APPLE_CLANG_VERSION >= 40000)
	#define CRYPTOPP_SSSE3_AVAILABLE 1
# endif
#endif

// Intrinsics availible in GCC 4.3 (http://gcc.gnu.org/gcc-4.3/changes.html) and
//   MSVC 2008 (http://msdn.microsoft.com/en-us/library/bb892950%28v=vs.90%29.aspx)
//   SunCC could generate SSE4 at 12.1, but the intrinsics are missing until 12.4.
#if !defined(CRYPTOPP_DISABLE_SSE4) && defined(CRYPTOPP_SSSE3_AVAILABLE) && \
	(defined(__SSE4_1__) || (CRYPTOPP_MSC_VERSION >= 1500) || \
	(CRYPTOPP_GCC_VERSION >= 40300) || (__INTEL_COMPILER >= 1000) || (__SUNPRO_CC >= 0x5110) || \
	(CRYPTOPP_LLVM_CLANG_VERSION >= 20300) || (CRYPTOPP_APPLE_CLANG_VERSION >= 40000))
	#define CRYPTOPP_SSE41_AVAILABLE 1
#endif

#if !defined(CRYPTOPP_DISABLE_SSE4) && defined(CRYPTOPP_SSSE3_AVAILABLE) && \
	(defined(__SSE4_2__) || (CRYPTOPP_MSC_VERSION >= 1500) || (__SUNPRO_CC >= 0x5110) || \
	(CRYPTOPP_GCC_VERSION >= 40300) || (__INTEL_COMPILER >= 1000) || \
	(CRYPTOPP_LLVM_CLANG_VERSION >= 20300) || (CRYPTOPP_APPLE_CLANG_VERSION >= 40000))
	#define CRYPTOPP_SSE42_AVAILABLE 1
#endif

// Couple to CRYPTOPP_DISABLE_AESNI, but use CRYPTOPP_CLMUL_AVAILABLE so we can selectively
//  disable for misbehaving platofrms and compilers, like Solaris or some Clang.
#if defined(CRYPTOPP_DISABLE_AESNI)
	#define CRYPTOPP_DISABLE_CLMUL 1
#endif

// Requires Sun Studio 12.3 (SunCC 0x5120) in theory.
#if !defined(CRYPTOPP_DISABLE_ASM) && !defined(CRYPTOPP_DISABLE_CLMUL) && defined(CRYPTOPP_SSE42_AVAILABLE) && \
	(defined(__PCLMUL__) || (_MSC_FULL_VER >= 150030729) || (__SUNPRO_CC >= 0x5120) || \
	(CRYPTOPP_GCC_VERSION >= 40300) || (__INTEL_COMPILER >= 1110) || \
	(CRYPTOPP_LLVM_CLANG_VERSION >= 30200) || (CRYPTOPP_APPLE_CLANG_VERSION >= 40300))
	#define CRYPTOPP_CLMUL_AVAILABLE 1
#endif

// Requires Sun Studio 12.3 (SunCC 0x5120)
#if !defined(CRYPTOPP_DISABLE_ASM) && !defined(CRYPTOPP_DISABLE_AESNI) && defined(CRYPTOPP_SSE42_AVAILABLE) && \
	(defined(__AES__) || (_MSC_FULL_VER >= 150030729) || (__SUNPRO_CC >= 0x5120) || \
	(CRYPTOPP_GCC_VERSION >= 40300) || (__INTEL_COMPILER >= 1110) || \
	(CRYPTOPP_LLVM_CLANG_VERSION >= 30200) || (CRYPTOPP_APPLE_CLANG_VERSION >= 40300))
	#define CRYPTOPP_AESNI_AVAILABLE 1
#endif

// Guessing at SHA for SunCC. Its not in Sun Studio 12.6. Also see
//   http://stackoverflow.com/questions/45872180/which-xarch-for-sha-extensions-on-solaris
#if !defined(CRYPTOPP_DISABLE_ASM) && !defined(CRYPTOPP_DISABLE_SHANI) && defined(CRYPTOPP_SSE42_AVAILABLE) && \
	(defined(__SHA__) || (CRYPTOPP_MSC_VERSION >= 1900) || (__SUNPRO_CC >= 0x5160) || \
	(CRYPTOPP_GCC_VERSION >= 40900) || (__INTEL_COMPILER >= 1300) || \
	(CRYPTOPP_LLVM_CLANG_VERSION >= 30400) || (CRYPTOPP_APPLE_CLANG_VERSION >= 50100))
	#define CRYPTOPP_SHANI_AVAILABLE 1
#endif

// Fixup Android and SSE, Crypto. It may be enabled based on compiler version.
#if (defined(__ANDROID__) || defined(ANDROID))
# if (CRYPTOPP_BOOL_X86)
#  undef CRYPTOPP_SSE41_AVAILABLE
#  undef CRYPTOPP_SSE42_AVAILABLE
#  undef CRYPTOPP_CLMUL_AVAILABLE
#  undef CRYPTOPP_AESNI_AVAILABLE
#  undef CRYPTOPP_SHANI_AVAILABLE
# endif
# if (CRYPTOPP_BOOL_X64)
#  undef CRYPTOPP_CLMUL_AVAILABLE
#  undef CRYPTOPP_AESNI_AVAILABLE
#  undef CRYPTOPP_SHANI_AVAILABLE
# endif
#endif

// Fixup for SunCC 12.1-12.4. Bad code generation in AES_Encrypt and friends.
#if defined(__SUNPRO_CC) && (__SUNPRO_CC <= 0x5130)
# undef CRYPTOPP_AESNI_AVAILABLE
#endif

// Fixup for SunCC 12.1-12.6. Compiler crash on GCM_Reduce_CLMUL and friends.
//   http://github.com/weidai11/cryptopp/issues/226
#if defined(__SUNPRO_CC) && (__SUNPRO_CC <= 0x5150)
# undef CRYPTOPP_CLMUL_AVAILABLE
#endif

#endif  // X86, X32, X64

// ***************** ARM CPU features ********************

#if (CRYPTOPP_BOOL_ARM32 || CRYPTOPP_BOOL_ARM64)

// We don't have an ARM big endian test rig. Disable
// ARM-BE ASM and instrinsics until we can test it.
#if defined(CRYPTOPP_BIG_ENDIAN)
# define CRYPTOPP_DISABLE_ASM 1
#endif

// Requires ARMv7 and ACLE 1.0. -march=armv7-a or above must be present
// Requires GCC 4.3, Clang 2.8 or Visual Studio 2012
// Do not use APPLE_CLANG_VERSION; use __ARM_FEATURE_XXX instead.
#if !defined(CRYPTOPP_ARM_NEON_AVAILABLE) && !defined(CRYPTOPP_DISABLE_ASM)
# if defined(__arm__) || defined(__ARM_NEON) || defined(__ARM_FEATURE_NEON) || defined(_M_ARM)
#  if (CRYPTOPP_GCC_VERSION >= 40300) || (CRYPTOPP_CLANG_VERSION >= 20800) || \
      (CRYPTOPP_MSC_VERSION >= 1700)
#   define CRYPTOPP_ARM_NEON_AVAILABLE 1
#  endif  // Compilers
# endif  // Platforms
#endif

// ARMv8 and ASIMD. -march=armv8-a or above must be present
// Requires GCC 4.8, Clang 3.3 or Visual Studio 2017
// Do not use APPLE_CLANG_VERSION; use __ARM_FEATURE_XXX instead.
#if !defined(CRYPTOPP_ARM_ASIMD_AVAILABLE) && !defined(CRYPTOPP_DISABLE_ASM)
# if defined(__aarch32__) || defined(__aarch64__) || defined(_M_ARM64)
#  if defined(__ARM_NEON) || defined(__ARM_FEATURE_NEON) || defined(__ARM_FEATURE_ASIMD) || \
      (CRYPTOPP_GCC_VERSION >= 40800) || (CRYPTOPP_CLANG_VERSION >= 30300) || \
      (CRYPTOPP_MSC_VERSION >= 1910)
#   define CRYPTOPP_ARM_NEON_AVAILABLE 1
#   define CRYPTOPP_ARM_ASIMD_AVAILABLE 1
#  endif  // Compilers
# endif  // Platforms
#endif

// ARMv8 and ASIMD. -march=armv8-a+crc or above must be present
// Requires GCC 4.8, Clang 3.3 or Visual Studio 2017
// Do not use APPLE_CLANG_VERSION; use __ARM_FEATURE_XXX instead.
#if !defined(CRYPTOPP_ARM_CRC32_AVAILABLE) && !defined(CRYPTOPP_DISABLE_ASM)
# if defined(__aarch32__) || defined(__aarch64__) || defined(_M_ARM64)
#  if defined(__ARM_FEATURE_CRC32) || (CRYPTOPP_GCC_VERSION >= 40800) || \
      (CRYPTOPP_CLANG_VERSION >= 30300) || (CRYPTOPP_MSC_VERSION >= 1910)
#   define CRYPTOPP_ARM_CRC32_AVAILABLE 1
#  endif  // Compilers
# endif  // Platforms
#endif

// ARMv8 and ASIMD. -march=armv8-a+crypto or above must be present
// Requires GCC 4.8, Clang 3.3 or Visual Studio 2017
// Do not use APPLE_CLANG_VERSION; use __ARM_FEATURE_XXX instead.
#if !defined(CRYPTOPP_ARM_PMULL_AVAILABLE) && !defined(CRYPTOPP_DISABLE_ASM)
# if defined(__aarch32__) || defined(__aarch64__) || defined(_M_ARM64)
#  if defined(__ARM_FEATURE_CRYPTO) || (CRYPTOPP_GCC_VERSION >= 40800) || \
      (CRYPTOPP_CLANG_VERSION >= 30300) || (CRYPTOPP_MSC_VERSION >= 1910)
#   define CRYPTOPP_ARM_PMULL_AVAILABLE 1
#  endif  // Compilers
# endif  // Platforms
#endif

// ARMv8 and AES. -march=armv8-a+crypto or above must be present
// Requires GCC 4.8, Clang 3.3 or Visual Studio 2017
// Do not use APPLE_CLANG_VERSION; use __ARM_FEATURE_XXX instead.
#if !defined(CRYPTOPP_ARM_AES_AVAILABLE) && !defined(CRYPTOPP_DISABLE_ASM)
# if defined(__aarch32__) || defined(__aarch64__) || defined(_M_ARM64)
#  if defined(__ARM_FEATURE_CRYPTO) || (CRYPTOPP_GCC_VERSION >= 40800) || \
      (CRYPTOPP_CLANG_VERSION >= 30300) || (CRYPTOPP_MSC_VERSION >= 1910)
#   define CRYPTOPP_ARM_AES_AVAILABLE 1
#  endif  // Compilers
# endif  // Platforms
#endif

// ARMv8 and SHA-1, SHA-256. -march=armv8-a+crypto or above must be present
// Requires GCC 4.8, Clang 3.3 or Visual Studio 2017
// Do not use APPLE_CLANG_VERSION; use __ARM_FEATURE_XXX instead.
#if !defined(CRYPTOPP_ARM_SHA_AVAILABLE) && !defined(CRYPTOPP_DISABLE_ASM)
# if defined(__aarch32__) || defined(__aarch64__) || defined(_M_ARM64)
#  if defined(__ARM_FEATURE_CRYPTO) || (CRYPTOPP_GCC_VERSION >= 40800) || \
      (CRYPTOPP_CLANG_VERSION >= 30300) || (CRYPTOPP_MSC_VERSION >= 1910)
#   define CRYPTOPP_ARM_SHA1_AVAILABLE 1
#   define CRYPTOPP_ARM_SHA2_AVAILABLE 1
#  endif  // Compilers
# endif  // Platforms
#endif

// ARMv8 and SHA-512, SHA-3. -march=armv8.4-a+crypto or above must be present
// Requires GCC 8.0, Clang 6.0 or Visual Studio 2021???
// Do not use APPLE_CLANG_VERSION; use __ARM_FEATURE_XXX instead.
#if !defined(CRYPTOPP_ARM_SHA_AVAILABLE) && !defined(CRYPTOPP_DISABLE_ASM)
# if defined(__aarch32__) || defined(__aarch64__) || defined(_M_ARM64)
#  if defined(__ARM_FEATURE_SHA3) || (CRYPTOPP_GCC_VERSION >= 80000) || \
      (CRYPTOPP_MSC_VERSION >= 2100)
#   define CRYPTOPP_ARM_SHA512_AVAILABLE 1
#   define CRYPTOPP_ARM_SHA3_AVAILABLE 1
#  endif  // Compilers
# endif  // Platforms
#endif

// ARMv8 and SM3, SM4. -march=armv8.4-a+crypto or above must be present
// Requires GCC 8.0, Clang 6.0 or Visual Studio 2021???
// Do not use APPLE_CLANG_VERSION; use __ARM_FEATURE_XXX instead.
#if !defined(CRYPTOPP_ARM_SM3_AVAILABLE) && !defined(CRYPTOPP_DISABLE_ASM)
# if defined(__aarch32__) || defined(__aarch64__) || defined(_M_ARM64)
#  if defined(__ARM_FEATURE_SM3) || (CRYPTOPP_GCC_VERSION >= 80000) || \
      (CRYPTOPP_MSC_VERSION >= 2100)
#   define CRYPTOPP_ARM_SM3_AVAILABLE 1
#   define CRYPTOPP_ARM_SM4_AVAILABLE 1
#  endif  // Compilers
# endif  // Platforms
#endif

// Limit the <arm_acle.h> include.
#if defined(__aarch32__) || defined(__aarch64__) || (__ARM_ARCH >= 8) || defined(__ARM_ACLE)
# if !defined(__ANDROID__) && !defined(ANDROID) && !defined(__APPLE__)
#  define CRYPTOPP_ARM_ACLE_AVAILABLE 1
# endif
#endif

// Fixup Apple Clang and PMULL. Apple defines __ARM_FEATURE_CRYPTO for Xcode 6
// but does not provide PMULL. TODO: determine when PMULL is available.
#if defined(CRYPTOPP_APPLE_CLANG_VERSION) && (CRYPTOPP_APPLE_CLANG_VERSION < 70000)
# undef CRYPTOPP_ARM_PMULL_AVAILABLE
#endif

// Fixup Android and CRC32. It may be enabled based on compiler version.
#if (defined(__ANDROID__) || defined(ANDROID)) && !defined(__ARM_FEATURE_CRC32)
# undef CRYPTOPP_ARM_CRC32_AVAILABLE
#endif

// Fixup Android and Crypto. It may be enabled based on compiler version.
#if (defined(__ANDROID__) || defined(ANDROID)) && !defined(__ARM_FEATURE_CRYPTO)
# undef CRYPTOPP_ARM_PMULL_AVAILABLE
# undef CRYPTOPP_ARM_AES_AVAILABLE
# undef CRYPTOPP_ARM_SHA1_AVAILABLE
# undef CRYPTOPP_ARM_SHA2_AVAILABLE
#endif

// Cryptogams offers an ARM asm AES implementation. Crypto++ does
// not provide an asm implementation. The Cryptogams implementation
// is about 2x faster than C/C++. Define this to use the Cryptogams
// AES implementation on GNU Linux systems. When defined, Crypto++
// will use aes-armv4.S. LLVM miscompiles aes-armv4.S so disable
// under Clang. See https://bugs.llvm.org/show_bug.cgi?id=38133.
#if !defined(CRYPTOPP_DISABLE_ASM) && defined(__arm__)
# if defined(__GNUC__) && !defined(__clang__)
#  define CRYPTOGAMS_ARM_AES 1
# endif
#endif

#endif  // ARM32, ARM64

// ***************** AltiVec and Power8 ********************

#if (CRYPTOPP_BOOL_PPC32 || CRYPTOPP_BOOL_PPC64)

#if defined(CRYPTOPP_DISABLE_ALTIVEC) || defined(CRYPTOPP_DISABLE_ASM)
# undef CRYPTOPP_DISABLE_ALTIVEC
# undef CRYPTOPP_DISABLE_POWER7
# undef CRYPTOPP_DISABLE_POWER8
# define CRYPTOPP_DISABLE_ALTIVEC 1
# define CRYPTOPP_DISABLE_POWER7 1
# define CRYPTOPP_DISABLE_POWER8 1
#endif

// An old Apple G5 with GCC 4.01 has AltiVec, but its only Power4 or so.
#if !defined(CRYPTOPP_ALTIVEC_AVAILABLE) && !defined(CRYPTOPP_DISABLE_ALTIVEC)
# if defined(_ARCH_PWR4) || defined(__ALTIVEC__) || \
	(CRYPTOPP_XLC_VERSION >= 100000) || (CRYPTOPP_GCC_VERSION >= 40001)
#  define CRYPTOPP_ALTIVEC_AVAILABLE 1
# endif
#endif

// We need Power7 for unaligned loads and stores
#if !defined(CRYPTOPP_POWER7_AVAILABLE) && !defined(CRYPTOPP_DISABLE_POWER7) && defined(CRYPTOPP_ALTIVEC_AVAILABLE)
# if defined(_ARCH_PWR7) || (CRYPTOPP_XLC_VERSION >= 100000) || (CRYPTOPP_GCC_VERSION >= 40100)
#  define CRYPTOPP_POWER7_AVAILABLE 1
# endif
#endif

// We need Power8 for in-core crypto and 64-bit vector types
#if !defined(CRYPTOPP_POWER8_AVAILABLE) && !defined(CRYPTOPP_DISABLE_POWER8) && defined(CRYPTOPP_POWER7_AVAILABLE)
# if defined(_ARCH_PWR8) || (CRYPTOPP_XLC_VERSION >= 130000) || (CRYPTOPP_GCC_VERSION >= 40800)
#  define CRYPTOPP_POWER8_AVAILABLE 1
# endif
#endif

#if !defined(CRYPTOPP_POWER8_AES_AVAILABLE) && !defined(CRYPTOPP_DISABLE_POWER8_AES) && defined(CRYPTOPP_POWER8_AVAILABLE)
# if defined(__CRYPTO__) || defined(_ARCH_PWR8) || (CRYPTOPP_XLC_VERSION >= 130000) || (CRYPTOPP_GCC_VERSION >= 40800)
//#  define CRYPTOPP_POWER8_CRC_AVAILABLE 1
#  define CRYPTOPP_POWER8_AES_AVAILABLE 1
#  define CRYPTOPP_POWER8_VMULL_AVAILABLE 1
#  define CRYPTOPP_POWER8_SHA_AVAILABLE 1
# endif
#endif

#endif  // PPC, PPC64

// ***************** Miscellaneous ********************

// Nearly all Intel's and AMD's have SSE. Enable it independent of SSE ASM and intrinscs
#if (CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_PPC32 || CRYPTOPP_BOOL_PPC64) && !defined(CRYPTOPP_DISABLE_ASM)
	#define CRYPTOPP_BOOL_ALIGN16 1
#else
	#define CRYPTOPP_BOOL_ALIGN16 0
#endif

// How to allocate 16-byte aligned memory (for SSE2)
// posix_memalign see https://forum.kde.org/viewtopic.php?p=66274
#if defined(_MSC_VER)
	#define CRYPTOPP_MM_MALLOC_AVAILABLE
#elif defined(__linux__) || defined(__sun__) || defined(__CYGWIN__)
	#define CRYPTOPP_MEMALIGN_AVAILABLE
#elif defined(__APPLE__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
	#define CRYPTOPP_MALLOC_ALIGNMENT_IS_16
#elif (defined(_GNU_SOURCE) || ((_XOPEN_SOURCE + 0) >= 600)) && (_POSIX_ADVISORY_INFO > 0)
	#define CRYPTOPP_POSIX_MEMALIGN_AVAILABLE
#else
	#define CRYPTOPP_NO_ALIGNED_ALLOC
#endif

// how to disable inlining
#if defined(_MSC_VER)
#	define CRYPTOPP_NOINLINE_DOTDOTDOT
#	define CRYPTOPP_NOINLINE __declspec(noinline)
#elif defined(__xlc__) || defined(__xlC__)
#	define CRYPTOPP_NOINLINE_DOTDOTDOT ...
#	define CRYPTOPP_NOINLINE __attribute__((noinline))
#elif defined(__GNUC__)
#	define CRYPTOPP_NOINLINE_DOTDOTDOT
#	define CRYPTOPP_NOINLINE __attribute__((noinline))
#else
#	define CRYPTOPP_NOINLINE_DOTDOTDOT ...
#	define CRYPTOPP_NOINLINE
#endif

// How to declare class constants
#if defined(CRYPTOPP_DOXYGEN_PROCESSING) || defined(__BORLANDC__)
# define CRYPTOPP_CONSTANT(x) static const int x;
#else
# define CRYPTOPP_CONSTANT(x) enum {x};
#endif

// How to disable CPU feature probing. We determine machine
//  capabilities by performing an os/platform *query* first,
//  like getauxv(). If the *query* fails, we move onto a
//  cpu *probe*. The cpu *probe* tries to exeute an instruction
//  and then catches a SIGILL on Linux or the exception
//  EXCEPTION_ILLEGAL_INSTRUCTION on Windows. Some OSes
//  fail to hangle a SIGILL gracefully, like Apple OSes. Apple
//  machines corrupt memory and variables around the probe.
#if defined(__APPLE__)
#  define CRYPTOPP_NO_CPU_FEATURE_PROBES 1
#endif

// ***************** Initialization and Constructor priorities ********************

// CRYPTOPP_INIT_PRIORITY attempts to manage initialization of C++ static objects.
// Under GCC, the library uses init_priority attribute in the range
// [CRYPTOPP_INIT_PRIORITY, CRYPTOPP_INIT_PRIORITY+100]. Under Windows,
// CRYPTOPP_INIT_PRIORITY enlists "#pragma init_seg(lib)". The platforms
// with gaps are Apple and Sun because they require linker scripts. Apple and
// Sun will use the library's Singletons to initialize and acquire resources.
// Also see http://cryptopp.com/wiki/Static_Initialization_Order_Fiasco
#ifndef CRYPTOPP_INIT_PRIORITY
# define CRYPTOPP_INIT_PRIORITY 250
#endif

// CRYPTOPP_USER_PRIORITY is for other libraries and user code that is using Crypto++
// and managing C++ static object creation. It is guaranteed not to conflict with
// values used by (or would be used by) the Crypto++ library.
#if defined(CRYPTOPP_INIT_PRIORITY) && (CRYPTOPP_INIT_PRIORITY > 0)
# define CRYPTOPP_USER_PRIORITY (CRYPTOPP_INIT_PRIORITY + 101)
#else
# define CRYPTOPP_USER_PRIORITY 350
#endif

// Most platforms allow us to specify when to create C++ objects. Apple and Sun do not.
#if (CRYPTOPP_INIT_PRIORITY > 0) && !(defined(NO_OS_DEPENDENCE) || defined(__APPLE__) || defined(__sun__))
# if (CRYPTOPP_GCC_VERSION >= 30000) || (CRYPTOPP_LLVM_CLANG_VERSION >= 20900) || (_INTEL_COMPILER >= 800)
#  define HAVE_GCC_INIT_PRIORITY 1
# elif (CRYPTOPP_MSC_VERSION >= 1310)
#  define HAVE_MSC_INIT_PRIORITY 1
# endif
#endif  // CRYPTOPP_INIT_PRIORITY, NO_OS_DEPENDENCE, Apple, Sun

// ***************** determine availability of OS features ********************

#ifndef NO_OS_DEPENDENCE

#if defined(_WIN32) || defined(__CYGWIN__)
#define CRYPTOPP_WIN32_AVAILABLE
#endif

#if defined(__unix__) || defined(__MACH__) || defined(__NetBSD__) || defined(__sun)
#define CRYPTOPP_UNIX_AVAILABLE
#endif

#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
#define CRYPTOPP_BSD_AVAILABLE
#endif

#if defined(CRYPTOPP_WIN32_AVAILABLE) || defined(CRYPTOPP_UNIX_AVAILABLE)
#	define HIGHRES_TIMER_AVAILABLE
#endif

#ifdef CRYPTOPP_WIN32_AVAILABLE
# if !defined(WINAPI_FAMILY)
#	define THREAD_TIMER_AVAILABLE
# elif defined(WINAPI_FAMILY)
#   if (WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP))
#	  define THREAD_TIMER_AVAILABLE
#  endif
# endif
#endif

#if defined(CRYPTOPP_UNIX_AVAILABLE) || defined(CRYPTOPP_DOXYGEN_PROCESSING)
#	define NONBLOCKING_RNG_AVAILABLE
#	define BLOCKING_RNG_AVAILABLE
#	define OS_RNG_AVAILABLE
#endif

// Cygwin/Newlib requires _XOPEN_SOURCE=600
#if defined(CRYPTOPP_UNIX_AVAILABLE)
# define UNIX_SIGNALS_AVAILABLE 1
#endif

#ifdef CRYPTOPP_WIN32_AVAILABLE
# if !defined(WINAPI_FAMILY)
#	define NONBLOCKING_RNG_AVAILABLE
#	define OS_RNG_AVAILABLE
# elif defined(WINAPI_FAMILY)
#   if (WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP))
#	  define NONBLOCKING_RNG_AVAILABLE
#	  define OS_RNG_AVAILABLE
#   elif !(WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP))
#     if ((WINVER >= 0x0A00 /*_WIN32_WINNT_WIN10*/) || (_WIN32_WINNT >= 0x0A00 /*_WIN32_WINNT_WIN10*/))
#	    define NONBLOCKING_RNG_AVAILABLE
#	    define OS_RNG_AVAILABLE
#     endif
#   endif
# endif
#endif

#endif	// NO_OS_DEPENDENCE

// ***************** DLL related ********************

#if defined(CRYPTOPP_WIN32_AVAILABLE) && !defined(CRYPTOPP_DOXYGEN_PROCESSING)

#ifdef CRYPTOPP_EXPORTS
#define CRYPTOPP_IS_DLL
#define CRYPTOPP_DLL __declspec(dllexport)
#elif defined(CRYPTOPP_IMPORTS)
#define CRYPTOPP_IS_DLL
#define CRYPTOPP_DLL __declspec(dllimport)
#else
#define CRYPTOPP_DLL
#endif

// C++ makes const internal linkage
#define CRYPTOPP_TABLE extern
#define CRYPTOPP_API __cdecl

#else	// not CRYPTOPP_WIN32_AVAILABLE

// C++ makes const internal linkage
#define CRYPTOPP_TABLE extern
#define CRYPTOPP_DLL
#define CRYPTOPP_API

#endif	// CRYPTOPP_WIN32_AVAILABLE

#if defined(__MWERKS__)
#define CRYPTOPP_EXTERN_DLL_TEMPLATE_CLASS extern class CRYPTOPP_DLL
#elif defined(__BORLANDC__) || defined(__SUNPRO_CC)
#define CRYPTOPP_EXTERN_DLL_TEMPLATE_CLASS template class CRYPTOPP_DLL
#else
#define CRYPTOPP_EXTERN_DLL_TEMPLATE_CLASS extern template class CRYPTOPP_DLL
#endif

#if defined(CRYPTOPP_MANUALLY_INSTANTIATE_TEMPLATES) && !defined(CRYPTOPP_IMPORTS)
#define CRYPTOPP_DLL_TEMPLATE_CLASS template class CRYPTOPP_DLL
#else
#define CRYPTOPP_DLL_TEMPLATE_CLASS CRYPTOPP_EXTERN_DLL_TEMPLATE_CLASS
#endif

#if defined(__MWERKS__)
#define CRYPTOPP_EXTERN_STATIC_TEMPLATE_CLASS extern class
#elif defined(__BORLANDC__) || defined(__SUNPRO_CC)
#define CRYPTOPP_EXTERN_STATIC_TEMPLATE_CLASS template class
#else
#define CRYPTOPP_EXTERN_STATIC_TEMPLATE_CLASS extern template class
#endif

#if defined(CRYPTOPP_MANUALLY_INSTANTIATE_TEMPLATES) && !defined(CRYPTOPP_EXPORTS)
#define CRYPTOPP_STATIC_TEMPLATE_CLASS template class
#else
#define CRYPTOPP_STATIC_TEMPLATE_CLASS CRYPTOPP_EXTERN_STATIC_TEMPLATE_CLASS
#endif

// ************** Unused variable ***************

// Portable way to suppress warnings.
//   Moved from misc.h due to circular depenedencies.
#define CRYPTOPP_UNUSED(x) ((void)(x))

// ************** Deprecated ***************

#if (CRYPTOPP_GCC_VERSION >= 40500) || (CRYPTOPP_LLVM_CLANG_VERSION >= 20800) || (CRYPTOPP_APPLE_CLANG_VERSION >= 40200)
# define CRYPTOPP_DEPRECATED(msg) __attribute__((deprecated (msg)))
#elif (CRYPTOPP_GCC_VERSION)
# define CRYPTOPP_DEPRECATED(msg) __attribute__((deprecated))
#else
# define CRYPTOPP_DEPRECATED(msg)
#endif

// ************** Instrumentation ***************

// GCC does not support; see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=78204
#if (CRYPTOPP_LLVM_CLANG_VERSION >= 30700) || (CRYPTOPP_APPLE_CLANG_VERSION >= 70000)
# define CRYPTOPP_NO_SANITIZE(x) __attribute__((no_sanitize(x)))
#else
# define CRYPTOPP_NO_SANITIZE(x)
#endif

// ***************** C++11 related ********************

// 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

// Compatibility with non-clang compilers.
#ifndef __has_feature
# define __has_feature(x) 0
#endif

#if !defined(CRYPTOPP_NO_CXX11)
#  if ((_MSC_VER >= 1600) || (__cplusplus >= 201103L)) && !defined(_STLPORT_VERSION)
#    define CRYPTOPP_CXX11 1
#  endif
#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++11 or C++14 is available
#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_ATOMICS 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
#if (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_DYNAMIC_INIT 1
#endif // Dynamic Initialization compilers

// 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

// 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 (CRYPTOPP_MSC_VERSION >= 1800) || __has_feature(cxx_variadic_templates) || \
	(__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 (CRYPTOPP_MSC_VERSION >= 1900) || __has_feature(cxx_constexpr) || \
	(__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_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)
# define CRYPTOPP_CXX11_NULLPTR 1
#endif // nullptr_t compilers

#endif // CRYPTOPP_CXX11

// ***************** C++17 related ********************

// C++17 macro version, https://stackoverflow.com/q/38456127/608639
#if defined(CRYPTOPP_CXX11) && !defined(CRYPTOPP_NO_CXX17)
#  if ((_MSC_VER >= 1900) || (__cplusplus >= 201703L)) && !defined(_STLPORT_VERSION)
#    define CRYPTOPP_CXX17 1
#  endif
#endif

// 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
#if defined(__clang__)
# if __EXCEPTIONS && __has_feature(cxx_exceptions)
#  define CRYPTOPP_CXX17_EXCEPTIONS 1
# endif
#elif (CRYPTOPP_MSC_VERSION >= 1900) || (__INTEL_COMPILER >= 1800) || (CRYPTOPP_GCC_VERSION >= 60000)
# define CRYPTOPP_CXX17_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

// http://stackoverflow.com/a/13867690/608639
#if defined(CRYPTOPP_CXX11_CONSTEXPR)
#  define CRYPTOPP_STATIC_CONSTEXPR static constexpr
#  define CRYPTOPP_CONSTEXPR constexpr
#else
#  define CRYPTOPP_STATIC_CONSTEXPR static
#  define CRYPTOPP_CONSTEXPR
#endif // CRYPTOPP_CXX11_CONSTEXPR

// Hack... CRYPTOPP_ALIGN_DATA is defined earlier, before C++11 alignas availability is determined
#if defined(CRYPTOPP_CXX11_ALIGNAS)
# undef CRYPTOPP_ALIGN_DATA
# define CRYPTOPP_ALIGN_DATA(x) alignas(x)
#endif  // CRYPTOPP_CXX11_ALIGNAS

// Hack... CRYPTOPP_CONSTANT is defined earlier, before C++11 constexpr availability is determined
// http://stackoverflow.com/q/35213098/608639
// #if defined(CRYPTOPP_CXX11_CONSTEXPR)
// # undef CRYPTOPP_CONSTANT
// # define CRYPTOPP_CONSTANT(x) constexpr static int x;
// #endif

// Hack... CRYPTOPP_CONSTANT is defined earlier, before C++11 constexpr availability is determined
// http://stackoverflow.com/q/35213098/608639
#if defined(CRYPTOPP_CXX11_ENUM)
# undef CRYPTOPP_CONSTANT
# define CRYPTOPP_CONSTANT(x) enum : int { x };
#elif defined(CRYPTOPP_CXX11_CONSTEXPR)
# undef CRYPTOPP_CONSTANT
# define CRYPTOPP_CONSTANT(x) constexpr static int x;
#endif

// 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

// OK to comment the following out, but please report it so we can fix it.
// C++17 value taken from http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4567.pdf.
#if (defined(__cplusplus) && (__cplusplus >= 199711L) && (__cplusplus < 201402L)) && !defined(CRYPTOPP_UNCAUGHT_EXCEPTION_AVAILABLE)
# error "std::uncaught_exception is not available. This is likely a configuration error."
#endif

#endif  // CRYPTOPP_CONFIG_H