From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263637AbTLURXM (ORCPT ); Sun, 21 Dec 2003 12:23:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263645AbTLURXM (ORCPT ); Sun, 21 Dec 2003 12:23:12 -0500 Received: from linux-bt.org ([217.160.111.169]:13738 "EHLO mail.holtmann.net") by vger.kernel.org with ESMTP id S263637AbTLURXI (ORCPT ); Sun, 21 Dec 2003 12:23:08 -0500 Subject: Re: Difference between select and enable in Kconfig From: Marcel Holtmann To: Randy Dunlap Cc: Linux Kernel Mailing List , Roman Zippel In-Reply-To: <20031220205433.195037e8.rddunlap@osdl.org> References: <1071974814.2684.41.camel@pegasus> <20031220205433.195037e8.rddunlap@osdl.org> Content-Type: text/plain Message-Id: <1072027326.2684.72.camel@pegasus> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.5 Date: Sun, 21 Dec 2003 18:22:06 +0100 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi Randy, > | while porting some of my drivers to 2.6 which use the firmware loader > | for example I came to the question whether to use select or enable to > | achieve the desired result. Looking at the documention don't gives me > | the answer and from zconf.l I feel that both options are the same. Can > | anyone please explain me the differences if there are any? > > I agree, they look like synonyms. > There's nothing about "enable" in Documentation/kbuild/kconfig-language.txt > and there's evidence in zconf.l (as you mention) and in menu.c > that they are the same: > > case P_SELECT: > sym2 = prop_get_symbol(prop); > if ((sym->type != S_BOOLEAN && sym->type != S_TRISTATE) || > (sym2->type != S_BOOLEAN && sym2->type != S_TRISTATE)) > fprintf(stderr, "%s:%d:warning: enable is only allowed with boolean and tristate symbols\n", > ~~~~~~ so both options achieve the same result. Why do we have two different options for the same stuff? Should we not remove one? Regards Marcel