diff --git a/config.usage b/config.usage
index 6d2efc4..b7c9fce 100644
--- a/config.usage
+++ b/config.usage
@@ -61,6 +61,9 @@ supported switches:
 	--disable-app
 	--disable-frontend
 
+	--enable-dependency-tracking
+	--disable-dependency-tracking
+
 
 supported variables:
 --------------------
diff --git a/configure b/configure
index cf72976..49e3d8c 100755
--- a/configure
+++ b/configure
@@ -747,6 +747,12 @@ for arg ; do
 			mb_source_dir=${arg#*=}
 			;;
 
+		# compatibility
+		--enable-dependency-tracking)
+			;;
+		--disable-dependency-tracking)
+			;;
+
 		*)
 			error_msg ${arg#}: "unsupported config argument."
 			exit 2