Make mandb path configurable. makemandb (and related tools) use

the path from the _mandb variable from man.conf now.

Set _mandb in man.conf to same value as was used before.

patch from me, committed by wiz in NetBSD repo, diff imported.

apropos-utils.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: apropos-utils.c,v 1.6 2012/05/10 15:36:09 joerg Exp $	*/
+/*	$NetBSD: apropos-utils.c,v 1.7 2012/10/06 15:33:59 wiz Exp $	*/
 /*-
  * Copyright (c) 2011 Abhinav Upadhyay <er.abhinav.upadhyay@gmail.com>
  * All rights reserved.
@@ -31,8 +31,9 @@
  */
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: apropos-utils.c,v 1.6 2012/05/10 15:36:09 joerg Exp $");
+__RCSID("$NetBSD: apropos-utils.c,v 1.7 2012/10/06 15:33:59 wiz Exp $");
 
+#include <sys/queue.h>
 #include <sys/stat.h>
 
 #include <assert.h>
@@ -46,6 +47,7 @@ __RCSID("$NetBSD: apropos-utils.c,v 1.6 2012/05/10 15:36:09 joerg Exp $");
 #include <zlib.h>
 
 #include "apropos-utils.h"
+#include "manconf.h"
 #include "mandoc.h"
 #include "sqlite3.h"
 
@@ -260,6 +262,28 @@ unzip(sqlite3_context *pctx, int nval, sqlite3_value **apval)
 	sqlite3_result_text(pctx, (const char *) outbuf, stream.total_out, free);
 }
 
+/*
+ * get_dbpath --
+ *   Read the path of the database from man.conf and return.
+ */
+char *
+get_dbpath(const char *manconf)
+{
+	TAG *tp;
+	char *dbpath;
+
+	config(manconf);
+	tp = gettag("_mandb", 1);
+	if (!tp)
+		return NULL;
+
+	if (TAILQ_EMPTY(&tp->entrylist))
+		return NULL;
+
+	dbpath = TAILQ_LAST(&tp->entrylist, tqh)->s;
+	return dbpath;
+}
+
 /* init_db --
  *   Prepare the database. Register the compress/uncompress functions and the
  *   stopword tokenizer.
@@ -276,16 +300,19 @@ unzip(sqlite3_context *pctx, int nval, sqlite3_value **apval)
  *  	In normal cases the function should return a handle to the db.
  */
 sqlite3 *
-init_db(int db_flag)
+init_db(int db_flag, const char *manconf)
 {
 	sqlite3 *db = NULL;
 	sqlite3_stmt *stmt;
 	struct stat sb;
 	int rc;
 	int create_db_flag = 0;
 
+	char *dbpath = get_dbpath(manconf);
+	if (dbpath == NULL)
+		errx(EXIT_FAILURE, "_mandb entry not found in man.conf");
 	/* Check if the database exists or not */
-	if (!(stat(DBPATH, &sb) == 0 && S_ISREG(sb.st_mode))) {
+	if (!(stat(dbpath, &sb) == 0 && S_ISREG(sb.st_mode))) {
 		/* Database does not exist, check if DB_CREATE was specified, and set
 		 * flag to create the database schema
 		 */
@@ -299,7 +326,7 @@ init_db(int db_flag)
 
 	/* Now initialize the database connection */
 	sqlite3_initialize();
-	rc = sqlite3_open_v2(DBPATH, &db, db_flag, NULL);
+	rc = sqlite3_open_v2(dbpath, &db, db_flag, NULL);
 
 	if (rc != SQLITE_OK) {
 		warnx("%s", sqlite3_errmsg(db));
@@ -350,6 +377,7 @@ init_db(int db_flag)
 		goto error;
 	}
 	return db;
+
 error:
 	sqlite3_close(db);
 	sqlite3_shutdown();