X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=generate;h=bcbbf79dde7d86b5ad1b3ff5ba3b30b1ca2359d8;hb=d145782ea0dc424dae204d1be1d07eac51c87ccf;hp=ad8c9eadecf8ae1df38183cdb8e010cd53fff865;hpb=81b2907f353e0ced12c22e31c4598aad6adf5039;p=subdirmk.git

diff --git a/generate b/generate
index ad8c9ea..bcbbf79 100755
--- a/generate
+++ b/generate
@@ -3,6 +3,7 @@
 # subdirmk - &-filter (makefile generation program)
 #  Copyright 2019 Ian Jackson
 # SPDX-License-Identifier: LGPL-2.0-or-later
+# There is NO WARRANTY.
 #
 # $(srcdir)/subdirmk/generate [--srcdir=SRCDIR] [--] SUBDIR...
 #
@@ -187,7 +188,9 @@ our %warn_unk;
 
 sub err ($) {
     my ($m) = @_;
-    die "subdirmk: ${err_file}:$.: $m\n";
+    die defined $err_file
+	? "subdirmk: ${err_file}:$.: $m\n"
+	: "subdirmk: $m\n";
 }
 
 sub wrncore ($$) {