Index: configure
--- configure.orig
+++ configure
@@ -14590,7 +14590,7 @@ if eval \${$as_CACHEVAR+:} false; then :
 else
 
   ax_check_save_flags=$CFLAGS
-  CFLAGS="$CFLAGS  $flag"
+  CFLAGS="$CFLAGS  $flag -Werror"
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */