# Configure paths for ESD
# Manish Singh    98-9-30
# stolen back from Frank Belew
# stolen from Manish Singh
# Shamelessly stolen from Owen Taylor

dnl AM_PATH_ESD([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl Test for ESD, and define ESD_CFLAGS and ESD_LIBS
dnl
AC_DEFUN(AM_PATH_ESD,
[dnl 
dnl Get the cflags and libraries from the esd-config script
dnl
AC_ARG_WITH(esd-prefix,[  --with-esd-prefix=PFX   Prefix where ESD is installed (optional)],
            esd_prefix="$withval", esd_prefix="")
AC_ARG_WITH(esd-exec-prefix,[  --with-esd-exec-prefix=PFX Exec prefix where ESD is installed (optional)],
            esd_exec_prefix="$withval", esd_exec_prefix="")
AC_ARG_ENABLE(esdtest, [  --disable-esdtest       Do not try to compile and run a test ESD program],
		    , enable_esdtest=yes)

  if test x$esd_exec_prefix != x ; then
     esd_args="$esd_args --exec-prefix=$esd_exec_prefix"
     if test x${ESD_CONFIG+set} != xset ; then
        ESD_CONFIG=$esd_exec_prefix/bin/esd-config
     fi
  fi
  if test x$esd_prefix != x ; then
     esd_args="$esd_args --prefix=$esd_prefix"
     if test x${ESD_CONFIG+set} != xset ; then
        ESD_CONFIG=$esd_prefix/bin/esd-config
     fi
  fi

  AC_PATH_PROG(ESD_CONFIG, esd-config, no)
  min_esd_version=ifelse([$1], ,0.2.5,$1)
  AC_MSG_CHECKING(for ESD - version >= $min_esd_version)
  no_esd=""
  if test "$ESD_CONFIG" = "no" ; then
    no_esd=yes
  else
    ESD_CFLAGS=`$ESD_CONFIG $esdconf_args --cflags`
    ESD_LIBS=`$ESD_CONFIG $esdconf_args --libs`

    esd_major_version=`$ESD_CONFIG $esd_args --version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
    esd_minor_version=`$ESD_CONFIG $esd_args --version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
    esd_micro_version=`$ESD_CONFIG $esd_config_args --version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
    if test "x$enable_esdtest" = "xyes" ; then
      ac_save_CFLAGS="$CFLAGS"
      ac_save_LIBS="$LIBS"
      CFLAGS="$CFLAGS $ESD_CFLAGS"
      LIBS="$LIBS $ESD_LIBS"
dnl
dnl Now check if the installed ESD is sufficiently new. (Also sanity
dnl checks the results of esd-config to some extent
dnl
      rm -f conf.esdtest
      AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <esd.h>

char*
my_strdup (char *str)
{
  char *new_str;
  
  if (str)
    {
      new_str = malloc ((strlen (str) + 1) * sizeof(char));
      strcpy (new_str, str);
    }
  else
    new_str = NULL;
  
  return new_str;
}

int main ()
{
  int major, minor, micro;
  char *tmp_version;

  system ("touch conf.esdtest");

  /* HP/UX 9 (%@#!) writes to sscanf strings */
  tmp_version = my_strdup("$min_esd_version");
  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
     printf("%s, bad version string\n", "$min_esd_version");
     exit(1);
   }

   if (($esd_major_version > major) ||
      (($esd_major_version == major) && ($esd_minor_version > minor)) ||
      (($esd_major_version == major) && ($esd_minor_version == minor) && ($esd_micro_version >= micro)))
    {
      return 0;
    }
  else
    {
      printf("\n*** 'esd-config --version' returned %d.%d.%d, but the minimum version\n", $esd_major_version, $esd_minor_version, $esd_micro_version);
      printf("*** of ESD required is %d.%d.%d. If esd-config is correct, then it is\n", major, minor, micro);
      printf("*** best to upgrade to the required version.\n");
      printf("*** If esd-config was wrong, set the environment variable ESD_CONFIG\n");
      printf("*** to point to the correct copy of esd-config, and remove the file\n");
      printf("*** config.cache before re-running configure\n");
      return 1;
    }
}

],, no_esd=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
       CFLAGS="$ac_save_CFLAGS"
       LIBS="$ac_save_LIBS"
     fi
  fi
  if test "x$no_esd" = x ; then
     AC_MSG_RESULT(yes)
     ifelse([$2], , :, [$2])     
  else
     AC_MSG_RESULT(no)
     if test "$ESD_CONFIG" = "no" ; then
       echo "*** The esd-config script installed by ESD could not be found"
       echo "*** If ESD was installed in PREFIX, make sure PREFIX/bin is in"
       echo "*** your path, or set the ESD_CONFIG environment variable to the"
       echo "*** full path to esd-config."
     else
       if test -f conf.esdtest ; then
        :
       else
          echo "*** Could not run ESD test program, checking why..."
          CFLAGS="$CFLAGS $ESD_CFLAGS"
          LIBS="$LIBS $ESD_LIBS"
          AC_TRY_LINK([
#include <stdio.h>
#include <esd.h>
],      [ return 0; ],
        [ echo "*** The test program compiled, but did not run. This usually means"
          echo "*** that the run-time linker is not finding ESD or finding the wrong"
          echo "*** version of ESD. If it is not finding ESD, you'll need to set your"
          echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
          echo "*** to the installed location  Also, make sure you have run ldconfig if that"
          echo "*** is required on your system"
	  echo "***"
          echo "*** If you have an old version installed, it is best to remove it, although"
          echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
        [ echo "*** The test program failed to compile or link. See the file config.log for the"
          echo "*** exact error that occured. This usually means ESD was incorrectly installed"
          echo "*** or that you have moved ESD since it was installed. In the latter case, you"
          echo "*** may want to edit the esd-config script: $ESD_CONFIG" ])
          CFLAGS="$ac_save_CFLAGS"
          LIBS="$ac_save_LIBS"
       fi
     fi
     ESD_CFLAGS=""
     ESD_LIBS=""
     ifelse([$3], , :, [$3])
  fi
  AC_SUBST(ESD_CFLAGS)
  AC_SUBST(ESD_LIBS)
  rm -f conf.esdtest
])

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.tv_sec=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)

])

AC_DEFUN(AC_CHECK_LASTLOG,[

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

dnl some systems (BSD4.4-like) require time.h to be included before utmp.h :/
AC_MSG_CHECKING(for existance of lastlog 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_LASTLOG_H
#include <lastlog.h>
#endif],[struct lastlog ll; char *p; p=ll.ll_host;],result=yes,result=no)
if test "$result" = "yes"; then
  AC_DEFINE(HAVE_LASTLOG)
fi
AC_MSG_RESULT($result)

])