# Configure paths for LIBIDL

dnl AM_PATH_LIBIDL([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, MODULES]]]])

dnl Test for LIBIDL, and define LIBIDL_CFLAGS and LIBIDL_LIBS

dnl

AC_DEFUN([AM_PATH_LIBIDL],

[dnl 

dnl Get the cflags and libraries from the libIDL-config script

dnl

AC_ARG_WITH(libIDL-prefix,[  --with-libIDL-prefix=PFX   Prefix where libIDL is installed (optional)],

            libIDL_config_prefix="$withval", libIDL_config_prefix="")

AC_ARG_WITH(libIDL-exec-prefix,[  --with-libIDL-exec-prefix=PFX Exec prefix where libIDL is installed (optional)],

            libIDL_config_exec_prefix="$withval", libIDL_config_exec_prefix="")

AC_ARG_ENABLE(libIDLtest, [  --disable-libIDLtest       Do not try to compile and run a test libIDL program],

		    , enable_libIDLtest=yes)

  if test x$libIDL_config_exec_prefix != x ; then

     libIDL_config_args="$libIDL_config_args --exec-prefix=$libIDL_config_exec_prefix"

     if test x${LIBIDL_CONFIG+set} != xset ; then

        LIBIDL_CONFIG=$libIDL_config_exec_prefix/bin/libIDL-config

     fi

  fi

  if test x$libIDL_config_prefix != x ; then

     libIDL_config_args="$libIDL_config_args --prefix=$libIDL_config_prefix"

     if test x${LIBIDL_CONFIG+set} != xset ; then

        LIBIDL_CONFIG=$libIDL_config_prefix/bin/libIDL-config

     fi

  fi

dnl AM_PATH_GLIB(@GLIB_VERSION_REQUIRED@)

  AM_PATH_GLIB_2_0(@GLIB_VERSION_REQUIRED@)

  AC_PATH_PROG(LIBIDL_CONFIG, libIDL-config, no)

  min_libIDL_version=ifelse([$1], ,0.6.0,$1)

  AC_MSG_CHECKING(for libIDL - version >= $min_libIDL_version)

  no_libIDL=""

  if test "$LIBIDL_CONFIG" = "no" ; then

    no_libIDL=yes

  else

    LIBIDL_CFLAGS=`$LIBIDL_CONFIG $libIDL_config_args --cflags`

    LIBIDL_LIBS=`$LIBIDL_CONFIG $libIDL_config_args --libs`

    libIDL_config_major_version=`$LIBIDL_CONFIG $libIDL_config_args --version | \

           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`

    libIDL_config_minor_version=`$LIBIDL_CONFIG $libIDL_config_args --version | \

           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`

    libIDL_config_micro_version=`$LIBIDL_CONFIG $libIDL_config_args --version | \

           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`

    if test "x$enable_libIDLtest" = "xyes" ; then

      ac_save_CFLAGS="$CFLAGS"

      ac_save_LIBS="$LIBS"

      CFLAGS="$CFLAGS $LIBIDL_CFLAGS"

      LIBS="$LIBIDL_LIBS $LIBS"

dnl

dnl Now check if the installed LIBIDL is sufficiently new.

dnl

      rm -f conf.libIDLtest

      AC_TRY_RUN([

#include <stdio.h>

#include <stdlib.h>

#include <libIDL/IDL.h>

int 

main ()

{

  int major, minor, micro;

  int libIDL_major_version;

  int libIDL_minor_version;

  int libIDL_micro_version;

  char *tmp_version;

  system ("touch conf.libIDLtest");

  /* HP/UX 9 (%@#!) writes to sscanf strings */

  tmp_version = g_strdup ("$min_libIDL_version");

  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {

     printf("%s, bad version string\n", "$min_libIDL_version");

     exit(1);

  }

  tmp_version = g_strdup (IDL_get_libver_string ());

  if (sscanf(tmp_version, "%d.%d.%d",

	     &libIDL_major_version,

	     &libIDL_minor_version,

	     &libIDL_micro_version) != 3) {

     printf("%s, bad version string\n", tmp_version);

     exit(1);

  }

  if ((libIDL_major_version != $libIDL_config_major_version) ||

      (libIDL_minor_version != $libIDL_config_minor_version) ||

      (libIDL_micro_version != $libIDL_config_micro_version))

    {

      printf("\n*** 'libIDL-config --version' returned %d.%d.%d, but libIDL (%d.%d.%d)\n", 

             $libIDL_config_major_version, $libIDL_config_minor_version, $libIDL_config_micro_version,

             libIDL_major_version, libIDL_minor_version, libIDL_micro_version);

      printf ("*** was found! If libIDL-config was correct, then it is best\n");

      printf ("*** to remove the old version of LIBIDL. You may also be able to fix the error\n");

      printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n");

      printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");

      printf("*** required on your system.\n");

      printf("*** If libIDL-config was wrong, set the environment variable LIBIDL_CONFIG\n");

      printf("*** to point to the correct copy of libIDL-config, and remove the file config.cache\n");

      printf("*** before re-running configure\n");

    } 

  else if ((libIDL_major_version != LIBIDL_MAJOR_VERSION) ||

	   (libIDL_minor_version != LIBIDL_MINOR_VERSION) ||

           (libIDL_micro_version != LIBIDL_MICRO_VERSION))

    {

      printf("\n*** libIDL header files (version %d.%d.%d) do not match\n",

	     LIBIDL_MAJOR_VERSION, LIBIDL_MINOR_VERSION, LIBIDL_MICRO_VERSION);

      printf("*** library (version %d.%d.%d)\n",

	     libIDL_major_version, libIDL_minor_version, libIDL_micro_version);

    }

  else

    {

      if ((libIDL_major_version > major) ||

        ((libIDL_major_version == major) && (libIDL_minor_version > minor)) ||

        ((libIDL_major_version == major) && (libIDL_minor_version == minor) && (libIDL_micro_version >= micro)))

      {

        return 0;

       }

     else

      {

        printf("\n*** An old version of libIDL (%d.%d.%d) was found.\n",

               libIDL_major_version, libIDL_minor_version, libIDL_micro_version);

        printf("*** You need at least libIDL version %d.%d.%d.\n",

               major, minor, micro);

        printf("***\n");

        printf("*** If you have already installed a sufficiently new version, this error\n");

        printf("*** probably means that the wrong copy of the libIDL-config shell script is\n");

        printf("*** being found. The easiest way to fix this is to remove the old version\n");

        printf("*** of libIDL, but you can also set the LIBIDL_CONFIG environment to point to the\n");

        printf("*** correct copy of libIDL-config. (In this case, you will have to\n");

        printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");

        printf("*** so that the correct libraries are found at run-time))\n");

      }

    }

  return 1;

}

],, no_libIDL=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])

       CFLAGS="$ac_save_CFLAGS"

       LIBS="$ac_save_LIBS"

     fi

  fi

  if test "x$no_libIDL" = x ; then

     AC_MSG_RESULT(yes)

     ifelse([$2], , :, [$2])     

  else

     AC_MSG_RESULT(no)

     if test "$LIBIDL_CONFIG" = "no" ; then

       echo "*** The libIDL-config script installed by libIDL could not be found"

       echo "*** If libIDL was installed in PREFIX, make sure PREFIX/bin is in"

       echo "*** your path, or set the LIBIDL_CONFIG environment variable to the"

       echo "*** full path to libIDL-config."

     else

       if test -f conf.libIDLtest ; then

        :

       else

          echo "*** Could not run libIDL test program, checking why..."

          CFLAGS="$CFLAGS $LIBIDL_CFLAGS"

          LIBS="$LIBS $LIBIDL_LIBS"

          AC_TRY_LINK([

#include <stdio.h>

#include <stdlib.h>

#include <libIDL/IDL.h>

],      [ return IDL_get_libver_string ? 1 : 0; ],

        [ echo "*** The test program compiled, but did not run. This usually means"

          echo "*** that the run-time linker is not finding libIDL or finding the wrong"

          echo "*** version of LIBIDL. If it is not finding libIDL, 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 libIDL was incorrectly installed"

          echo "*** or that you have moved libIDL since it was installed. In the latter case, you"

          echo "*** may want to edit the libIDL-config script: $LIBIDL_CONFIG" ])

          CFLAGS="$ac_save_CFLAGS"

          LIBS="$ac_save_LIBS"

       fi

     fi

     LIBIDL_CFLAGS=""

     LIBIDL_LIBS=""

     ifelse([$3], , :, [$3])

  fi

  AC_SUBST(LIBIDL_CFLAGS)

  AC_SUBST(LIBIDL_LIBS)

  rm -f conf.libIDLtest

])