/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the COPYING file, which can be found at the root of the source code       *
 * distribution tree, or in https://www.hdfgroup.org/licenses.               *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#define SIMPLE_TEST(x) int main(){ x; return 0; }

#ifdef HAVE_C99_DESIGNATED_INITIALIZER

#ifdef FC_DUMMY_MAIN
#ifndef FC_DUMMY_MAIN_EQ_F77
#  ifdef __cplusplus
extern "C"
#  endif
int FC_DUMMY_MAIN()
{ return 1;}
#endif
#endif
int
main ()
{

  typedef struct
  {
    int x;
    union
    {
      int i;
      double d;
    }u;
  }di_struct_t;
  di_struct_t x =
  { 0,
    { .d = 0.0}};
  ;
  return 0;
}

#endif

#ifdef HAVE_ATTRIBUTE

#if 0
static void test int __attribute((unused)) var)
{
  int __attribute__((unused)) x = var;
}

int main(void)
{
  test(19);
}

#else
int
main ()
{
int __attribute__((unused)) x
  ;
  return 0;
}
#endif


#endif /* HAVE_ATTRIBUTE */

#ifdef HAVE_TIMEZONE

#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <time.h>
SIMPLE_TEST(timezone=0);

#endif /* HAVE_TIMEZONE */

#ifdef SYSTEM_SCOPE_THREADS
#include <stdlib.h>
#include <pthread.h>

int main(void)
{
    pthread_attr_t attribute;
    int ret;

    pthread_attr_init(&attribute);
    ret=pthread_attr_setscope(&attribute, PTHREAD_SCOPE_SYSTEM);
    if (ret==0)
        return 0;
    return 1;
}

#endif /* SYSTEM_SCOPE_THREADS */

#ifdef HAVE_SOCKLEN_T

#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif

SIMPLE_TEST(socklen_t foo);

#endif /* HAVE_SOCKLEN_T */

#ifdef DEV_T_IS_SCALAR

#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif

int main ()
{
  dev_t d1, d2;
  if(d1==d2)
    return 0;
  return 1;
}

#endif /* DEV_T_IS_SCALAR */

#ifdef HAVE_OFF64_T
#include <sys/types.h>
int main()
{
  off64_t n = 0;
  return (int)n;
}
#endif

#ifdef TEST_DIRECT_VFD_WORKS
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
int main(void)
{
   int fid;
   if((fid=open("tst_file", O_CREAT | O_TRUNC | O_DIRECT, 0755))<0)
       return 1;
   close(fid);
   remove("tst_file");
   return 0;
}
#endif

#ifdef HAVE_DIRECT
       SIMPLE_TEST(posix_memalign());
#endif

#ifdef HAVE_DEFAULT_SOURCE
/* check default source */
#include <features.h>

int
main(void)
{
#ifdef __GLIBC_PREREQ
  return __GLIBC_PREREQ(2,19);
#else
  return 0;
#endif /* defined(__GLIBC_PREREQ) */
}
#endif

#ifdef TEST_LFS_WORKS
/* Return 0 when LFS is available and 1 otherwise.  */
#define _LARGEFILE_SOURCE
#define _LARGEFILE64_SOURCE
#define _LARGE_FILES
#define _FILE_OFFSET_BITS 64
#include <sys/types.h>
#include <sys/stat.h>
#include <assert.h>
#include <stdio.h>

int main(int argc, char **argv)
{
  /* check that off_t can hold 2^63 - 1 and perform basic operations... */
#define OFF_T_64 (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
  if (OFF_T_64 % 2147483647 != 1)
    return 1;

  /* stat breaks on SCO OpenServer */
  struct stat buf;
  stat( argv[0], &buf );
  if (!S_ISREG(buf.st_mode))
    return 2;

  FILE *file = fopen( argv[0], "r" );
  off_t offset = ftello( file );
  fseek( file, offset, SEEK_CUR );
  fclose( file );
  return 0;
}
#endif

#ifdef GETTIMEOFDAY_GIVES_TZ
#include <time.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
int main(void)
{
 struct timeval tv;
 struct timezone tz;
 tz.tz_minuteswest = 7777;  /* Initialize to an unreasonable number */
 tz.tz_dsttime = 7;
 gettimeofday(&tv, &tz);
    /* Check whether the function returned any value at all */
 if(tz.tz_minuteswest == 7777 && tz.tz_dsttime == 7)
     return 1;
 else return 0;
}
#endif

#ifdef HAVE_IOEO

#include <windows.h>
typedef void (WINAPI *PGNSI)(LPSYSTEM_INFO);
int main ()
{
    PGNSI pGNSI;
    pGNSI = (PGNSI) GetProcAddress(
      GetModuleHandle(TEXT("kernel32.dll")),
      "InitOnceExecuteOnce");
    if(NULL == pGNSI)
        return 1;
    else
        return 0;
}

#endif /* HAVE_IOEO */