diff --git a/autogen.sh b/autogen.sh
index 8b6f58f..916169a 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,12 +1,9 @@
 #! /bin/sh
 
-srcdir=`dirname $0`
-test -z "$srcdir" && srcdir=.
-
-ORIGDIR=`pwd`
-cd $srcdir
-
-autoreconf --force -v --install || exit 1
-cd $ORIGDIR || exit $?
-
-$srcdir/configure "$@"
+test -n "$srcdir" || srcdir=`dirname "$0"`
+test -n "$srcdir" || srcdir=.
+(
+  cd "$srcdir" &&
+  autoreconf --force -v --install
+) || exit
+test -n "$NOCONFIGURE" || "$srcdir/configure" "$@"