buildroot/toolchain/gdb/6.5/200-uclibc-readline-conf.patch

--- a/readline/configure
+++ b/readline/configure
@@ -7871,7 +7871,12 @@
 
 
 echo "$as_me:$LINENO: checking for mbstate_t" >&5
+echo $ECHO_N "bash_cv_have_mbstate_t=$bash_cv_have_mbstate_t" >&6
 echo $ECHO_N "checking for mbstate_t... $ECHO_C" >&6
+if test "${bash_cv_have_mbstate_t+set}" != set; then
+  bash_cv_have_mbstate_t=yes
+  echo $ECHO_N "WARNING!! forcing to yes!!! $ECHO_C" >&6
+fi
 if test "${bash_cv_have_mbstate_t+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else