stop if we find a configure option we don't know about, add --enable-debug option which currently only adds -g

svn-id: r9612

1 files changed, 8 insertions, 0 deletions

diff --git a/configure b/configure
index d5f7598acc..48b97b2ee6 100755
--- a/configure
+++ b/configure
@@ -212,6 +212,14 @@ for ac_option in $@; do
       --backend=*)
         _backend=`echo $ac_option | cut -d '=' -f 2`
 	;;
+      --enable-debug)
+        CXXFLAGS="$CXXFLAGS -g"
+        ;;
+      *)
+        echo "error: unrecognised option: $ac_option
+Try \`$0 --help' for more information." >&2
+	exit 1
+        ;;
     esac;
 done;