diff --git a/config/functions b/config/functions
index a909cb6d67..40a353e242 100644
--- a/config/functions
+++ b/config/functions
@@ -829,6 +829,15 @@ do_autoreconf() {
     export LIBTOOL=$TOOLCHAIN/bin/libtool
   fi
 
+  # >autoconf-2.69 will call gtkdocize when used in macros
+  # when called with --install parameter.
+  # use "true" unkess gtkdocsize is in the toolchain.
+  if [ -e "$TOOLCHAIN/bin/gtkdocize" ]; then
+    export GTKDOCIZE=$TOOLCHAIN/bin/gtkdocize
+  else
+    export GTKDOCIZE=true
+  fi
+
   if [ -e "$TOOLCHAIN/bin/autoreconf" -a -e "$INTLTOOLIZE" ]; then
     mkdir -p $ACLOCAL_DIR
     if [ -e "$LIBTOOLIZE" ]; then