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# Configure paths for gdk-pixbuf
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# Elliot Lee 2000-01-10
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# stolen from Raph Levien 98-11-18
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# stolen from Manish Singh    98-9-30
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# stolen back from Frank Belew
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# stolen from Manish Singh
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# Shamelessly stolen from Owen Taylor
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dnl AM_PATH_GDK_PIXBUF([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
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dnl Test for GDK_PIXBUF, and define GDK_PIXBUF_CFLAGS and GDK_PIXBUF_LIBS
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dnl
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AC_DEFUN(AM_PATH_GDK_PIXBUF,
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[dnl 
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dnl Get the cflags and libraries from the gdk-pixbuf-config script
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dnl
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AC_ARG_WITH(gdk-pixbuf-prefix,[  --with-gdk-pixbuf-prefix=PFX   Prefix where GDK_PIXBUF is installed (optional)],
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            gdk_pixbuf_prefix="$withval", gdk_pixbuf_prefix="")
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AC_ARG_WITH(gdk-pixbuf-exec-prefix,[  --with-gdk-pixbuf-exec-prefix=PFX Exec prefix where GDK_PIXBUF is installed (optional)],
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            gdk_pixbuf_exec_prefix="$withval", gdk_pixbuf_exec_prefix="")
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AC_ARG_ENABLE(gdk_pixbuftest, [  --disable-gdk_pixbuftest       Do not try to compile and run a test GDK_PIXBUF program],
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		    , enable_gdk_pixbuftest=yes)
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  if test x$gdk_pixbuf_exec_prefix != x ; then
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     gdk_pixbuf_args="$gdk_pixbuf_args --exec-prefix=$gdk_pixbuf_exec_prefix"
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     if test x${GDK_PIXBUF_CONFIG+set} = xset ; then
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        GDK_PIXBUF_CONFIG=$gdk_pixbuf_exec_prefix/gdk-pixbuf-config
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     fi
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  fi
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  if test x$gdk_pixbuf_prefix != x ; then
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     gdk_pixbuf_args="$gdk_pixbuf_args --prefix=$gdk_pixbuf_prefix"
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     if test x${GDK_PIXBUF_CONFIG+set} = xset ; then
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        GDK_PIXBUF_CONFIG=$gdk_pixbuf_prefix/bin/gdk-pixbuf-config
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     fi
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  fi
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  AC_PATH_PROG(GDK_PIXBUF_CONFIG, gdk-pixbuf-config, no)
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  min_gdk_pixbuf_version=ifelse([$1], ,0.2.5,$1)
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  AC_MSG_CHECKING(for GDK_PIXBUF - version >= $min_gdk_pixbuf_version)
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  no_gdk_pixbuf=""
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  if test "$GDK_PIXBUF_CONFIG" = "no" ; then
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    no_gdk_pixbuf=yes
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  else
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    GDK_PIXBUF_CFLAGS=`$GDK_PIXBUF_CONFIG $gdk_pixbufconf_args --cflags`
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    GDK_PIXBUF_LIBS=`$GDK_PIXBUF_CONFIG $gdk_pixbufconf_args --libs`
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    gdk_pixbuf_major_version=`$GDK_PIXBUF_CONFIG $gdk_pixbuf_args --version | \
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           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
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    gdk_pixbuf_minor_version=`$GDK_PIXBUF_CONFIG $gdk_pixbuf_args --version | \
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           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
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    gdk_pixbuf_micro_version=`$GDK_PIXBUF_CONFIG $gdk_pixbuf_config_args --version | \
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           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
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    if test "x$enable_gdk_pixbuftest" = "xyes" ; then
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      ac_save_CFLAGS="$CFLAGS"
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      ac_save_LIBS="$LIBS"
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      CFLAGS="$CFLAGS $GDK_PIXBUF_CFLAGS"
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      LIBS="$LIBS $GDK_PIXBUF_LIBS"
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dnl
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dnl Now check if the installed GDK_PIXBUF is sufficiently new. (Also sanity
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dnl checks the results of gdk-pixbuf-config to some extent
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dnl
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      rm -f conf.gdk_pixbuftest
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      AC_TRY_RUN([
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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char*
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my_strdup (char *str)
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{
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  char *new_str;
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  if (str)
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    {
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      new_str = malloc ((strlen (str) + 1) * sizeof(char));
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      strcpy (new_str, str);
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    }
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  else
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    new_str = NULL;
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  return new_str;
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}
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int main ()
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{
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  int major, minor, micro;
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  char *tmp_version;
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  system ("touch conf.gdk_pixbuftest");
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  /* HP/UX 9 (%@#!) writes to sscanf strings */
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  tmp_version = my_strdup("$min_gdk_pixbuf_version");
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  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
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     printf("%s, bad version string\n", "$min_gdk_pixbuf_version");
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     exit(1);
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   }
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   if (($gdk_pixbuf_major_version > major) ||
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      (($gdk_pixbuf_major_version == major) && ($gdk_pixbuf_minor_version > minor)) ||
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      (($gdk_pixbuf_major_version == major) && ($gdk_pixbuf_minor_version == minor) && ($gdk_pixbuf_micro_version >= micro)))
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    {
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      return 0;
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    }
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  else
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    {
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      printf("\n*** 'gdk-pixbuf-config --version' returned %d.%d.%d, but the minimum version\n", $gdk_pixbuf_major_version, $gdk_pixbuf_minor_version, $gdk_pixbuf_micro_version);
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      printf("*** of GDK_PIXBUF required is %d.%d.%d. If gdk-pixbuf-config is correct, then it is\n", major, minor, micro);
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      printf("*** best to upgrade to the required version.\n");
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      printf("*** If gdk-pixbuf-config was wrong, set the environment variable GDK_PIXBUF_CONFIG\n");
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      printf("*** to point to the correct copy of gdk-pixbuf-config, and remove the file\n");
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      printf("*** config.cache before re-running configure\n");
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      return 1;
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    }
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}
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],, no_gdk_pixbuf=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
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       CFLAGS="$ac_save_CFLAGS"
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       LIBS="$ac_save_LIBS"
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     fi
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  fi
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  if test "x$no_gdk_pixbuf" = x ; then
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     AC_MSG_RESULT(yes)
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     ifelse([$2], , :, [$2])     
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  else
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     AC_MSG_RESULT(no)
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     if test "$GDK_PIXBUF_CONFIG" = "no" ; then
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       echo "*** The gdk-pixbuf-config script installed by GDK_PIXBUF could not be found"
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       echo "*** If GDK_PIXBUF was installed in PREFIX, make sure PREFIX/bin is in"
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       echo "*** your path, or set the GDK_PIXBUF_CONFIG environment variable to the"
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       echo "*** full path to gdk-pixbuf-config."
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     else
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       if test -f conf.gdk_pixbuftest ; then
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        :
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       else
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          echo "*** Could not run GDK_PIXBUF test program, checking why..."
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          CFLAGS="$CFLAGS $GDK_PIXBUF_CFLAGS"
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          LIBS="$LIBS $GDK_PIXBUF_LIBS"
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          AC_TRY_LINK([
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#include <stdio.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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],      [ return 0; ],
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        [ echo "*** The test program compiled, but did not run. This usually means"
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          echo "*** that the run-time linker is not finding GDK_PIXBUF or finding the wrong"
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          echo "*** version of GDK_PIXBUF. If it is not finding GDK_PIXBUF, you'll need to set your"
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          echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
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          echo "*** to the installed location  Also, make sure you have run ldconfig if that"
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          echo "*** is required on your system"
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	  echo "***"
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          echo "*** If you have an old version installed, it is best to remove it, although"
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          echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
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        [ echo "*** The test program failed to compile or link. See the file config.log for the"
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          echo "*** exact error that occured. This usually means GDK_PIXBUF was incorrectly installed"
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          echo "*** or that you have moved GDK_PIXBUF since it was installed. In the latter case, you"
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          echo "*** may want to edit the gdk-pixbuf-config script: $GDK_PIXBUF_CONFIG" ])
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          CFLAGS="$ac_save_CFLAGS"
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          LIBS="$ac_save_LIBS"
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       fi
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     fi
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     GDK_PIXBUF_CFLAGS=""
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     GDK_PIXBUF_LIBS=""
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     ifelse([$3], , :, [$3])
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  fi
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  AC_SUBST(GDK_PIXBUF_CFLAGS)
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  AC_SUBST(GDK_PIXBUF_LIBS)
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  rm -f conf.gdk_pixbuftest
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])