diff --git a/config.usage b/config.usage
index f29f27c..09a6a58 100644
--- a/config.usage
+++ b/config.usage
@@ -8,6 +8,7 @@ supported switches:
 	--program-prefix
 	--avoid-version
 	--source-dir
+	--srcdir
 
 	--pkgname
 	--pkgdesc
diff --git a/configure b/configure
index 92d1bd8..f01191b 100755
--- a/configure
+++ b/configure
@@ -686,6 +686,9 @@ for arg ; do
 		--source-dir=*)
 			mb_source_dir=${arg#*=}
 			;;
+		--srcdir=*)
+			mb_source_dir=${arg#*=}
+			;;
 
 		# pkgconfig
 		--pkgname=*)