--- a/configure.in	Thu Sep 29 12:36:08 2011 +0200
+++ b/configure.in	Thu Sep 29 17:14:36 2011 +0200
@@ -313,6 +313,28 @@
 AC_SUBST(JPEG_LIBS)
 
 
+#  libtiff support
+# ----------------------------------------------------------------------
+
+AC_ARG_ENABLE([tiff],
+  AC_HELP_STRING([--disable-tiff], [disable direct tiff support]),
+    [libtiff=$enableval], [libtiff=auto])
+
+if test "x${libtiff}" != "xno"; then
+  AC_CHECK_LIB(tiff, TIFFClientOpen,
+      HAVE_TIFF=yes
+      TIFF_LIBS=-ltiff
+      AC_DEFINE(HAVE_TIFF, 1, [define to enable use of custom tiff loader]),
+      HAVE_TIFF=no)
+else
+  HAVE_TIFF=disabled
+fi
+
+AM_CONDITIONAL(HAVE_TIFF, [test "x$HAVE_TIFF" = xyes])
+AC_SUBST(TIFF_CFLAGS)
+AC_SUBST(TIFF_LIBS)
+
+
 #  Exiv2 support
 # ----------------------------------------------------------------------
 
@@ -470,7 +492,7 @@
   Gtk:           $GTK_CFLAGS
   Glib:          $GLIB_CFLAGS
   Thread:        $GTHREAD_LIBS
-  Others:	 $JPEG_LIBS $LCMS_LIBS $EXIV2_LIBS $LIBCHAMPLAIN_LIBS $LIBCHAMPLAIN_GTK_LIBS
+  Others:	 $JPEG_LIBS $TIFF_LIBS $LCMS_LIBS $EXIV2_LIBS $LIBCHAMPLAIN_LIBS $LIBCHAMPLAIN_GTK_LIBS
 
 Localization:
   NLS support:   $USE_NLS