# Configure paths for GTK+

# Owen Taylor     97-11-3

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

dnl Test for GTK, and define GTK_CFLAGS and GTK_LIBS

dnl

AC_DEFUN(AM_PATH_GTK,

[dnl 

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

dnl

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

            gtk_config_prefix="$withval", gtk_config_prefix="")

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

            gtk_config_exec_prefix="$withval", gtk_config_exec_prefix="")

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

		    , enable_gtktest=yes)

  for module in . $4

  do

      case "$module" in

         gthread) 

             gtk_config_args="$gtk_config_args gthread"

         ;;

      esac

  done

  if test x$gtk_config_exec_prefix != x ; then

     gtk_config_args="$gtk_config_args --exec-prefix=$gtk_config_exec_prefix"

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

        GTK_CONFIG=$gtk_config_exec_prefix/bin/gtk-config

     fi

  fi

  if test x$gtk_config_prefix != x ; then

     gtk_config_args="$gtk_config_args --prefix=$gtk_config_prefix"

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

        GTK_CONFIG=$gtk_config_prefix/bin/gtk-config

     fi

  fi

  AC_PATH_PROG(GTK_CONFIG, gtk-config, no)

  min_gtk_version=ifelse([$1], ,0.99.7,$1)

  AC_MSG_CHECKING(for GTK - version >= $min_gtk_version)

  no_gtk=""

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

    no_gtk=yes

  else

    GTK_CFLAGS=`$GTK_CONFIG $gtk_config_args --cflags`

    GTK_LIBS=`$GTK_CONFIG $gtk_config_args --libs`

    gtk_config_major_version=`$GTK_CONFIG $gtk_config_args --version | \

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

    gtk_config_minor_version=`$GTK_CONFIG $gtk_config_args --version | \

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

    gtk_config_micro_version=`$GTK_CONFIG $gtk_config_args --version | \

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

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

      ac_save_CFLAGS="$CFLAGS"

      ac_save_LIBS="$LIBS"

      CFLAGS="$CFLAGS $GTK_CFLAGS"

      LIBS="$GTK_LIBS $LIBS"

dnl

dnl Now check if the installed GTK is sufficiently new. (Also sanity

dnl checks the results of gtk-config to some extent

dnl

      rm -f conf.gtktest

      AC_TRY_RUN([

#include <gtk/gtk.h>

#include <stdio.h>

#include <stdlib.h>

int 

main ()

{

  int major, minor, micro;

  char *tmp_version;

  system ("touch conf.gtktest");

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

  tmp_version = g_strdup("$min_gtk_version");

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

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

     exit(1);

   }

  if ((gtk_major_version != $gtk_config_major_version) ||

      (gtk_minor_version != $gtk_config_minor_version) ||

      (gtk_micro_version != $gtk_config_micro_version))

    {

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

             $gtk_config_major_version, $gtk_config_minor_version, $gtk_config_micro_version,

             gtk_major_version, gtk_minor_version, gtk_micro_version);

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

      printf ("*** to remove the old version of GTK+. 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 gtk-config was wrong, set the environment variable GTK_CONFIG\n");

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

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

    } 

#if defined (GTK_MAJOR_VERSION) && defined (GTK_MINOR_VERSION) && defined (GTK_MICRO_VERSION)

  else if ((gtk_major_version != GTK_MAJOR_VERSION) ||

	   (gtk_minor_version != GTK_MINOR_VERSION) ||

           (gtk_micro_version != GTK_MICRO_VERSION))

    {

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

	     GTK_MAJOR_VERSION, GTK_MINOR_VERSION, GTK_MICRO_VERSION);

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

	     gtk_major_version, gtk_minor_version, gtk_micro_version);

    }

#endif /* defined (GTK_MAJOR_VERSION) ... */

  else

    {

      if ((gtk_major_version > major) ||

        ((gtk_major_version == major) && (gtk_minor_version > minor)) ||

        ((gtk_major_version == major) && (gtk_minor_version == minor) && (gtk_micro_version >= micro)))

      {

        return 0;

       }

     else

      {

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

               gtk_major_version, gtk_minor_version, gtk_micro_version);

        printf("*** You need a version of GTK+ newer than %d.%d.%d. The latest version of\n",

	       major, minor, micro);

        printf("*** GTK+ is always available from ftp://ftp.gtk.org.\n");

        printf("***\n");

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

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

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

        printf("*** of GTK+, but you can also set the GTK_CONFIG environment to point to the\n");

        printf("*** correct copy of gtk-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_gtk=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])

       CFLAGS="$ac_save_CFLAGS"

       LIBS="$ac_save_LIBS"

     fi

  fi

  if test "x$no_gtk" = x ; then

     AC_MSG_RESULT(yes)

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

  else

     AC_MSG_RESULT(no)

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

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

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

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

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

     else

       if test -f conf.gtktest ; then

        :

       else

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

          CFLAGS="$CFLAGS $GTK_CFLAGS"

          LIBS="$LIBS $GTK_LIBS"

          AC_TRY_LINK([

#include <gtk/gtk.h>

#include <stdio.h>

],      [ return ((gtk_major_version) || (gtk_minor_version) || (gtk_micro_version)); ],

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

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

          echo "*** version of GTK. If it is not finding GTK, 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 "***"

          echo "*** If you have a RedHat 5.0 system, you should remove the GTK package that"

          echo "*** came with the system with the command"

          echo "***"

          echo "***    rpm --erase --nodeps gtk gtk-devel" ],

        [ echo "*** The test program failed to compile or link. See the file config.log for the"

          echo "*** exact error that occured. This usually means GTK was incorrectly installed"

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

          echo "*** may want to edit the gtk-config script: $GTK_CONFIG" ])

          CFLAGS="$ac_save_CFLAGS"

          LIBS="$ac_save_LIBS"

       fi

     fi

     GTK_CFLAGS=""

     GTK_LIBS=""

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

  fi

  AC_SUBST(GTK_CFLAGS)

  AC_SUBST(GTK_LIBS)

  rm -f conf.gtktest

])