Add serial to pkg.m4

Bug #22709

diff --git a/pkg.m4 b/pkg.m4
index 95f7cbcfa56f0593c477806081b9373493d9b0ed..0294d77c35fa156e6d04c0681c5554b29b0421a4 100644 (file)
--- a/pkg.m4
+++ b/pkg.m4
@@ -1,4 +1,5 @@
 # pkg.m4 - Macros to locate and utilise pkg-config.            -*- Autoconf -*-
+# serial 1 (pkg-config-0.24)
 # 
 # Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
 #