# Checks for availability of various utmp fields
#
# Original code by Bernhard Rosenkraenzer (bero@linux.net.eu.org), 1998.
# Modifications by Timur Bakeyev (timur@gnu.org), 1999.
#

dnl AC_CHECK_UTMP()
dnl Test for presence of the field and define HAVE_UT_UT_field macro
dnl

AC_DEFUN(AC_CHECK_UTMP,[

AC_CHECK_HEADERS(sys/time.h utmp.h utmpx.h)
AC_HEADER_TIME

if test "$ac_cv_header_utmpx_h" = "yes"; then
    AC_DEFINE(UTMP,[struct utmpx])
else
    AC_DEFINE(UTMP,[struct utmp])
fi

dnl some systems (BSD4.4-like) require time.h to be included before utmp.h :/
AC_MSG_CHECKING(for ut_host field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; char *p; p=ut.ut_host;],result=yes,result=no)
if test "$result" = "yes"; then
  AC_DEFINE(HAVE_UT_UT_HOST)
fi
AC_MSG_RESULT($result)

AC_MSG_CHECKING(for ut_pid field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; int i; i=ut.ut_pid;],result=yes,result=no)
if test "$result" = "yes"; then
  AC_DEFINE(HAVE_UT_UT_PID)
fi
AC_MSG_RESULT($result)

AC_MSG_CHECKING(for ut_id field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; char *p; p=ut.ut_id;],result=yes,result=no)
if test "$result" = "yes"; then
  AC_DEFINE(HAVE_UT_UT_ID)
fi
AC_MSG_RESULT($result)

AC_MSG_CHECKING(for ut_name field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; char *p; p=ut.ut_name;],result=yes,result=no)
if test "$result" = "yes"; then
  AC_DEFINE(HAVE_UT_UT_NAME)
fi
AC_MSG_RESULT($result)

AC_MSG_CHECKING(for ut_type field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; int i; i=(int) ut.ut_type;],result=yes,result=no)
if test "$result" = "yes"; then
  AC_DEFINE(HAVE_UT_UT_TYPE)
fi
AC_MSG_RESULT($result)

AC_MSG_CHECKING(for ut_exit.e_termination field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; ut.ut_exit.e_termination=0;],result=yes,result=no)
if test "$result" = "yes"; then
  AC_DEFINE(HAVE_UT_UT_EXIT_E_TERMINATION)
fi
AC_MSG_RESULT($result)

AC_MSG_CHECKING(for ut_user field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; char *p; p=ut.ut_user;],result=yes,result=no)
if test "$result" = "yes"; then
  AC_DEFINE(HAVE_UT_UT_USER)
fi
AC_MSG_RESULT($result)

AC_MSG_CHECKING(for ut_time field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; ut.ut_time=0;],result=yes,result=no)
if test "$result" = "yes"; then
  AC_DEFINE(HAVE_UT_UT_TIME)
fi
AC_MSG_RESULT($result)

AC_MSG_CHECKING(for ut_tv field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; ut.ut_tv={0, 0};],result=yes,result=no)
if test "$result" = "yes"; then
  AC_DEFINE(HAVE_UT_UT_TV)
fi
AC_MSG_RESULT($result)

AC_MSG_CHECKING(for ut_syslen field in the utmp structure)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif],[UTMP ut; ut.ut_syslen=0;],result=yes,result=no)
if test "$result" = "yes"; then
  AC_DEFINE(HAVE_UT_UT_SYSLEN)
fi
AC_MSG_RESULT($result)

])