--- camlp5-6.11/configure.old	2014-08-24 09:49:01.887731189 +0100
+++ camlp5-6.11/configure	2014-08-24 09:50:19.043742759 +0100
@@ -246,11 +246,7 @@
   OCAMLC_W_Y=""
 fi
 
-if [ "$($ocamlc -warn-error A 2>&1)" = "" ]; then
-  WARNERR="-warn-error A"
-else
-  WARNERR=""
-fi
+WARNERR=""
 
 if make -f config/Makefile.check --no-print-directory >/dev/null 2>&1; then
   NO_PR_DIR=--no-print-directory