diff --git a/src/configure.in b/src/configure.in
index 80d70b0..f17fcb9 100644
--- a/src/configure.in
+++ b/src/configure.in
@@ -3539,6 +3539,22 @@
   AC_MSG_RESULT(yes)
 fi
 
+if test "x$GTK_CFLAGS" != "x"; then
+  dnl pango_shape_full() is new, fall back to pango_shape().
+  AC_MSG_CHECKING(for pango_shape_full)
+  ac_save_CFLAGS="$CFLAGS"
+  ac_save_LIBS="$LIBS"
+  CFLAGS="$CFLAGS $GTK_CFLAGS"
+  LIBS="$LIBS $GTK_LIBS"
+  AC_TRY_COMPILE(
+  [#include <gtk/gtk.h>],
+  [ pango_shape_full(NULL, 0, NULL, 0, NULL, NULL); ],
+	  AC_MSG_RESULT(yes); AC_DEFINE(HAVE_PANGO_SHAPE_FULL),
+	  AC_MSG_RESULT(no))
+  CFLAGS="$ac_save_CFLAGS"
+  LIBS="$ac_save_LIBS"
+fi
+
 AC_MSG_CHECKING(--disable-gpm argument)
 AC_ARG_ENABLE(gpm,
 	[  --disable-gpm           Don't use gpm (Linux mouse daemon).], ,