From owner-freebsd-bugs  Thu Apr 18  4:30:12 2002
Delivered-To: freebsd-bugs@hub.freebsd.org
Received: from freefall.freebsd.org (freefall.FreeBSD.org [216.136.204.21])
	by hub.freebsd.org (Postfix) with ESMTP id 3F37C37B41C
	for <freebsd-bugs@hub.freebsd.org>; Thu, 18 Apr 2002 04:30:06 -0700 (PDT)
Received: (from gnats@localhost)
	by freefall.freebsd.org (8.11.6/8.11.6) id g3IBU6569672;
	Thu, 18 Apr 2002 04:30:06 -0700 (PDT)
	(envelope-from gnats)
Received: from vexpert.dbai.tuwien.ac.at (vexpert.dbai.tuwien.ac.at [128.130.111.12])
	by hub.freebsd.org (Postfix) with ESMTP id 5BFB437B419
	for <FreeBSD-gnats-submit@freebsd.org>; Thu, 18 Apr 2002 04:23:28 -0700 (PDT)
Received: from naos.dbai.tuwien.ac.at (naos [128.130.111.28])
	by vexpert.dbai.tuwien.ac.at (8.11.6/8.11.6) with ESMTP id g3IBNPW29365;
	Thu, 18 Apr 2002 13:23:25 +0200 (MET DST)
Received: (from pfeifer@localhost)
	by naos.dbai.tuwien.ac.at (8.11.6/8.11.6) id g3IBNIV28960;
	Thu, 18 Apr 2002 13:23:18 +0200 (CEST)
	(envelope-from pfeifer)
Message-Id: <200204181123.g3IBNIV28960@naos.dbai.tuwien.ac.at>
Date: Thu, 18 Apr 2002 13:23:18 +0200 (CEST)
From: Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at>
To: FreeBSD-gnats-submit@FreeBSD.org
X-Send-Pr-Version: 3.113
Subject: bin/37224: make: $< only set for implicit rules
Sender: owner-freebsd-bugs@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-bugs.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-bugs>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-bugs>
X-Loop: FreeBSD.org


>Number:         37224
>Category:       bin
>Synopsis:       make: $< only set for implicit rules
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Apr 18 04:30:05 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Gerald Pfeifer
>Release:        FreeBSD 4.5-RELEASE i386
>Organization:
>Environment:
System: FreeBSD naos.dbai.tuwien.ac.at 4.5-RELEASE FreeBSD 4.5-RELEASE #0: Fri Feb 15 09:48:40 CET 2002 root@naos.dbai.tuwien.ac.at:/usr/src/sys/compile/DBAI i386

The same happens on -CURRENT as well.

	
>Description:
	The following Makefile demonstrates a make(1) bug handling $< in
	explicit rules (assume that bar.c resides in the current directory):

.c.o:
	echo $<

foo: bar.c
	echo $<


	Specifically, 'make bar.o' prints bar.c, as expected, while 'make foo'
	prints the empty string (as $< has not been set).

	GNU make prints bar.c in both cases, and also my reading of
	IEEE Std 1003.1-2001 indicates that make(1) is incorrect here.

>How-To-Repeat:
	
>Fix:

	

>Release-Note:
>Audit-Trail:
>Unformatted:

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-bugs" in the body of the message