$NetBSD: patch-ao,v 1.3 2016/08/09 21:46:07 jdolecek Exp $

Where to find the config file

--- lib/blkid/blkidP.h.orig	2009-08-13 01:39:57.000000000 +0000
+++ lib/blkid/blkidP.h
@@ -104,7 +104,11 @@ struct blkid_struct_cache
 extern char *blkid_strdup(const char *s);
 extern char *blkid_strndup(const char *s, const int length);
 
-#define BLKID_CACHE_FILE "/etc/blkid.tab"
+#ifndef ETC_DIR
+#define ETC_DIR "/etc"		/* Where to find the config file */
+#endif
+
+#define BLKID_CACHE_FILE ETC_DIR "/blkid.tab"
 
 #define BLKID_ERR_IO	 5
 #define BLKID_ERR_PROC	 9