Make config.h more Autoconf friendly (GH #835, PR #836)

1 files changed, 180 insertions, 0 deletions

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+// config_misc.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_misc.h

+/// \brief Library configuration file

+/// \details <tt>config.h</tt> was split into components in May 2019 to better

+///  integrate with Autoconf and its feature tests. The splitting occured 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.

+/// \sa <A HREF="https://github.com/weidai11/cryptopp/issues/835">Issue 835</A>

+/// \since Crypto++ 8.3

+

+#ifndef CRYPTOPP_CONFIG_MISC_H

+#define CRYPTOPP_CONFIG_MISC_H

+

+#include "config_asm.h"

+#include "config_cxx.h"

+#include "config_os.h"

+#include "config_ver.h"

+

+// Define this if running on a big-endian CPU

+// big endian will be assumed if CRYPTOPP_LITTLE_ENDIAN is not non-0

+#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 non-0

+#if !defined(CRYPTOPP_BIG_ENDIAN) && !defined(CRYPTOPP_LITTLE_ENDIAN)

+#	define CRYPTOPP_LITTLE_ENDIAN 1

+#endif

+

+// Define this if you want to set a prefix for TestData/ and TestVectors/

+// Be sure to add the trailing slash since its simple concatenation.

+// After https://github.com/weidai11/cryptopp/issues/760 the library

+// should find the test vectors and data without much effort. It

+// will search in "./" and "$ORIGIN/../share/cryptopp" automatically.

+#ifndef CRYPTOPP_DATA_DIR

+# define CRYPTOPP_DATA_DIR ""

+#endif

+

+// Define this to disable the test suite from searching for test

+// vectors and data in "./" and "$ORIGIN/../share/cryptopp". The

+// library will still search in CRYPTOPP_DATA_DIR, regardless.

+// Some distros may want to disable this feature. Also see

+// https://github.com/weidai11/cryptopp/issues/760

+// #ifndef CRYPTOPP_DISABLE_DATA_DIR_SEARCH

+// # define CRYPTOPP_DISABLE_DATA_DIR_SEARCH

+// #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

+

+// 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

+

+// 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

+

+// File system code to use when creating 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 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

+

+// 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

+

+// Portable way to suppress warnings.

+// Moved from misc.h due to circular depenedencies.

+#ifndef CRYPTOPP_UNUSED

+	#define CRYPTOPP_UNUSED(x) ((void)(x))

+#endif

+

+// how to disable inlining

+#if defined(_MSC_VER)

+#	define CRYPTOPP_NOINLINE_DOTDOTDOT

+#	define CRYPTOPP_NOINLINE __declspec(noinline)

+#elif defined(__xlc__) || defined(__xlC__) || defined(__ibmxl__)

+#	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

+

+// 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

+

+#if defined(CRYPTOPP_DOXYGEN_PROCESSING)

+# define CRYPTOPP_CONSTANT(x) static const int x;

+#elif defined(CRYPTOPP_CXX11_ENUM)

+# define CRYPTOPP_CONSTANT(x) enum : int { x };

+#elif defined(CRYPTOPP_CXX11_CONSTEXPR)

+# define CRYPTOPP_CONSTANT(x) constexpr static int x;

+#else

+# define CRYPTOPP_CONSTANT(x) static const int x;

+#endif

+

+// Warnings

+#ifdef _MSC_VER

+	// 4127: conditional expression is constant

+	// 4512: assignment operator not generated

+	// 4661: no suitable definition provided for explicit template instantiation request

+	// 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

+

+#endif  // CRYPTOPP_CONFIG_MISC_H