##############################################################################

#

# --- esd.m4 ---

#

# 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], ,0.2.7,$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

])