From 5f38d8b6fea1232609b6351fc9688c5fc0389223 Mon Sep 17 00:00:00 2001
From: uebayasi <uebayasi@NetBSD.org>
Date: Tue, 1 Sep 2015 01:17:56 +0000
Subject: [PATCH] Properly handle absolute prefix.

---
 usr.bin/config/mkmakefile.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/usr.bin/config/mkmakefile.c b/usr.bin/config/mkmakefile.c
index 84b6ee02caf8..44d1933da42b 100644
--- a/usr.bin/config/mkmakefile.c
+++ b/usr.bin/config/mkmakefile.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: mkmakefile.c,v 1.50 2015/09/01 00:38:30 uebayasi Exp $	*/
+/*	$NetBSD: mkmakefile.c,v 1.51 2015/09/01 01:17:56 uebayasi Exp $	*/
 
 /*
  * Copyright (c) 1992, 1993
@@ -45,7 +45,7 @@
 #endif
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: mkmakefile.c,v 1.50 2015/09/01 00:38:30 uebayasi Exp $");
+__RCSID("$NetBSD: mkmakefile.c,v 1.51 2015/09/01 01:17:56 uebayasi Exp $");
 
 #include <sys/param.h>
 #include <ctype.h>
@@ -300,6 +300,8 @@ emitfiletype(FILE *fp, struct filetype *fit)
 	if (*fit->fit_path != '/') {
 		prologue = "$S/";
 		if (fit->fit_prefix != NULL) {
+			if (*fit->fit_prefix == '/')
+				prologue = "";
 			prefix = fit->fit_prefix;
 			sep = "/";
 		}