programs/platform.h

/**
 * Copyright (c) 2016-present, Przemyslaw Skibinski, Yann Collet, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */

#ifndef PLATFORM_H_MODULE
#define PLATFORM_H_MODULE

#if defined (__cplusplus)
extern "C" {
#endif

/* **************************************
*  Compiler Options
****************************************/
#if defined(__INTEL_COMPILER)
#  pragma warning(disable : 177)    /* disable: message #177: function was declared but never referenced */
#endif
#if defined(_MSC_VER)
#  define _CRT_SECURE_NO_WARNINGS   /* Disable some Visual warning messages for fopen, strncpy */
#  define _CRT_SECURE_NO_DEPRECATE  /* VS2005 */
#  pragma warning(disable : 4127)   /* disable: C4127: conditional expression is constant */
#  if _MSC_VER <= 1800              /* (1800 = Visual Studio 2013) */
#    define snprintf sprintf_s      /* snprintf unsupported by Visual <= 2013 */
#  endif
#endif


/* **************************************
*  Detect 64-bit OS
*  http://nadeausoftware.com/articles/2012/02/c_c_tip_how_detect_processor_type_using_compiler_predefined_macros
****************************************/
#if defined __ia64 || defined _M_IA64 /* Intel Itanium */
  || defined __powerpc64__ || defined __ppc64__ || defined __PPC64__ /* POWER 64-bit */
  || (defined __sparc && (defined __sparcv9 || defined __sparc_v9__ || defined __arch64__)) || defined __sparc64__  /* SPARC 64-bit */
  || defined __x86_64__ || defined _M_X64 /* x86 64-bit */
  || defined __arm64__ || defined __aarch64__ || defined __ARM64_ARCH_8__ /* ARM 64-bit */
  || (defined __mips  && (__mips == 64 || __mips == 4 || __mips == 3)) /* MIPS 64-bit */
  || defined _LP64 || defined __LP64__ /* NetBSD, OpenBSD */ || defined __64BIT__  /* AIX */ || _ADDR64 /* Cray */ || 
  || (defined __SIZEOF_POINTER__ && __SIZEOF_POINTER__ == 8) /* gcc */)
#  if !defined(__64BIT__)
#    define __64BIT__  1
#  endif
#endif


/* **************************************
*  Unix Large Files support (>4GB)
****************************************/
#if !defined(__64BIT__)                               /* No point defining Large file for 64 bit */
#  if !defined(_FILE_OFFSET_BITS)   
#    define _FILE_OFFSET_BITS 64                      /* turn off_t into a 64-bit type for ftello, fseeko */
#  endif
#  if defined(__sun__) && !defined(_LARGEFILE_SOURCE) /* Sun Solaris 32-bits requires specific definitions */
#    define _LARGEFILE_SOURCE 1                       /* Large File Support extension (LFS) - fseeko, ftello */
#  endif
#  if defined(_AIX) || defined(__hpux)
#    define _LARGE_FILES                              /* Large file support on 32-bits AIX and HP-UX */
#  endif
#endif





/* ************************************************************
*  Detect POSIX version
*  PLATFORM_POSIX_VERSION = -1 for non-Unix e.g. Windows
*  PLATFORM_POSIX_VERSION = 0 for Unix-like non-POSIX
*  PLATFORM_POSIX_VERSION >= 1 is equal to found _POSIX_VERSION
***************************************************************/
#if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__)) || defined(__midipix__) || defined(__VMS))
	/* UNIX-style OS. ------------------------------------------- */
#  if (defined(__APPLE__) && defined(__MACH__)) || defined(__SVR4) || defined(_AIX) || defined(__hpux)
     || defined(__DragonFly__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)  /* POSIX.1–2001 (SUSv3) conformant */
#    define PLATFORM_POSIX_VERSION 200112L
#  else
#    if defined(__linux__) || defined(__linux)
#      define _POSIX_C_SOURCE 200112L  /* use feature test macro */
#    endif
#    include <unistd.h>  /* declares _POSIX_VERSION */
#    if defined(_POSIX_VERSION)  /* POSIX compliant */
#      define PLATFORM_POSIX_VERSION _POSIX_VERSION
#    else
#      define PLATFORM_POSIX_VERSION 0
#    endif
#  endif
#endif

#if !defined(PLATFORM_POSIX_VERSION)
#  define PLATFORM_POSIX_VERSION -1
#endif



#if defined (__cplusplus)
}
#endif

#endif /* PLATFORM_H_MODULE */