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

1 files changed, 152 insertions, 0 deletions

diff --git a/config_os.h b/config_os.h
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+++ b/config_os.h
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+// config_os.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_os.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_OS_H

+#define CRYPTOPP_CONFIG_OS_H

+

+#include "config_ver.h"

+

+// Windows platform

+#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)

+#define CRYPTOPP_WIN32_AVAILABLE

+#endif

+

+// Unix and Linux platforms

+#if defined(__unix__) || defined(__MACH__) || defined(__NetBSD__) || defined(__sun)

+#define CRYPTOPP_UNIX_AVAILABLE

+#endif

+

+// BSD platforms

+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)

+#define CRYPTOPP_BSD_AVAILABLE

+#endif

+

+// Microsoft compilers

+#if defined(_MSC_VER) || defined(__fastcall)

+	#define CRYPTOPP_FASTCALL __fastcall

+#else

+	#define CRYPTOPP_FASTCALL

+#endif

+

+// Microsoft compilers

+#if defined(_MSC_VER)

+	#define CRYPTOPP_NO_VTABLE __declspec(novtable)

+#else

+	#define CRYPTOPP_NO_VTABLE

+#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

+

+// Begin OS features, like init priorities and random numbers

+#ifndef NO_OS_DEPENDENCE

+

+// 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.

+#ifndef CRYPTOPP_USER_PRIORITY

+# define CRYPTOPP_USER_PRIORITY (CRYPTOPP_INIT_PRIORITY+101)

+#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

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

+#  define HAVE_XLC_INIT_PRIORITY 1

+# endif

+#endif  // CRYPTOPP_INIT_PRIORITY, NO_OS_DEPENDENCE, Apple, Sun

+

+#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

+

+#endif  // CRYPTOPP_CONFIG_OS_H