(autoheader --version) < /dev/null > /dev/null 2>&1 && autoheader
$AUTOMAKE -a $am_opt
-autoconf || echo "autoconf failed - version 2.5x is probably required"
+if ! autoconf; then
+ echo "autoconf failed - version 2.5x is probably required" >&2
+ exit 1
+fi
cd $ORIGDIR