linux.h

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//  (C) Copyright Boost.org 2001. Permission to copy, use, modify, sell and
//  distribute this software is granted provided this copyright notice appears
//  in all copies. This software is provided "as is" without express or implied
//  warranty, and with no claim as to its suitability for any purpose.

//  See http://www.boost.org for most recent version.

/* 
 * @$Id: linux.h,v 1.2 2004/03/18 13:32:32 jackjansen Exp $ 
 */

//  linux specific config options:

#define AMBULANT_PLATFORM "linux"
#define AMBULANT_PLATFORM_LINUX
#define AMBULANT_PLATFORM_UNIX

// make sure we have __GLIBC_PREREQ if available at all
#include <cstdlib>

//
// <stdint.h> added to glibc 2.1.1
// We can only test for 2.1 though:
//
#if defined(__GLIBC__) && ((__GLIBC__ > 2) || ((__GLIBC__ == 2) && (__GLIBC_MINOR__ >= 1)))
   // <stdint.h> defines int64_t unconditionally, but <sys/types.h> defines
   // int64_t only if __GNUC__.  Thus, assume a fully usable <stdint.h>
   // only when using GCC.
#  if defined __GNUC__
#    define AMBULANT_HAS_STDINT_H
#  endif
#endif

//
// como on linux doesn't have std:: c functions:
//
#ifdef __COMO__
#  define AMBULANT_NO_STDC_NAMESPACE
#endif

//
// Intel on linux doesn't have swprintf in std::
//
#ifdef  __ICC
#  define AMBULANT_NO_STDC_NAMESPACE
#endif

//
// If glibc is past version 2 then we definitely have
// gettimeofday, earlier versions may or may not have it:
//
#if defined(__GLIBC__) && (__GLIBC__ >= 2)
#  define AMBULANT_HAS_GETTIMEOFDAY
#endif

#ifdef __USE_POSIX199309
#  define AMBULANT_HAS_NANOSLEEP
#endif

#if defined(__GLIBC__) && defined(__GLIBC_PREREQ)
// __GLIBC_PREREQ is available since 2.1.2

   // swprintf is available since glibc 2.2.0
#  if !__GLIBC_PREREQ(2,2) || (!defined(__USE_ISOC99) && !defined(__USE_UNIX98))
#    define AMBULANT_NO_SWPRINTF
#  endif
#else
#  define AMBULANT_NO_SWPRINTF
#endif

// boilerplate code:
#define AMBULANT_HAS_UNISTD_H
#include <ambulant/config/posix_features.h>

#ifndef __GNUC__
//
// if the compiler is not gcc we still need to be able to parse
// the GNU system headers, some of which (mainly <stdint.h>)
// use GNU specific extensions:
//
#  ifndef __extension__
#     define __extension__
#  endif
#  ifndef __const__
#     define __const__ const
#  endif
#  ifndef __volatile__
#     define __volatile__ volatile
#  endif
#  ifndef __signed__
#     define __signed__ signed
#  endif
#  ifndef __typeof__
#     define __typeof__ typeof
#  endif
#  ifndef __inline__
#     define __inline__ inline
#  endif
#endif