From patchwork Wed Sep 26 20:04:38 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Weil X-Patchwork-Id: 187190 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id AE3672C009D for ; Thu, 27 Sep 2012 06:04:51 +1000 (EST) Received: from localhost ([::1]:44286 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TGxqj-000523-Sa for incoming@patchwork.ozlabs.org; Wed, 26 Sep 2012 16:04:49 -0400 Received: from eggs.gnu.org ([208.118.235.92]:56258) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TGxqc-00051w-Tr for qemu-devel@nongnu.org; Wed, 26 Sep 2012 16:04:43 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TGxqb-0007Bs-Lt for qemu-devel@nongnu.org; Wed, 26 Sep 2012 16:04:42 -0400 Received: from v220110690675601.yourvserver.net ([78.47.199.172]:55973) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TGxqb-0007Bb-F1; Wed, 26 Sep 2012 16:04:41 -0400 Received: from localhost (v220110690675601.yourvserver.net.local [127.0.0.1]) by v220110690675601.yourvserver.net (Postfix) with ESMTP id 95FA77280039; Wed, 26 Sep 2012 22:04:39 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at weilnetz.de Received: from v220110690675601.yourvserver.net ([127.0.0.1]) by localhost (v220110690675601.yourvserver.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id zD9EIJn1CxrT; Wed, 26 Sep 2012 22:04:39 +0200 (CEST) Received: by v220110690675601.yourvserver.net (Postfix, from userid 1000) id 050C2728003A; Wed, 26 Sep 2012 22:04:39 +0200 (CEST) From: Stefan Weil To: qemu-devel@nongnu.org Date: Wed, 26 Sep 2012 22:04:38 +0200 Message-Id: <1348689878-11544-1-git-send-email-sw@weilnetz.de> X-Mailer: git-send-email 1.7.10 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 78.47.199.172 Cc: qemu-trivial@nongnu.org, Stefan Weil , Anthony Liguori Subject: [Qemu-devel] [PATCH] configure: Support empty target list (--target-list=) X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Specifying an empty target list with --target-list= is shorter than specifying --disable-user --disable-system. Both variants should give the same result: no targets at all. This modification implements that feature. It uses a trick which works with POSIX compliant shells to test whether target_list is undefined (=> default targets) or empty (=> no targets). Signed-off-by: Stefan Weil --- configure | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/configure b/configure index 8f99b7b..769ec1a 100755 --- a/configure +++ b/configure @@ -125,7 +125,8 @@ cc_i386=i386-pc-linux-gnu-gcc libs_qga="" debug_info="yes" -target_list="" +# Don't accept a target_list environment variable. +unset target_list # Default value for a variable defining feature "foo". # * foo="no" feature will only be used if --enable-foo arg is given @@ -1281,7 +1282,7 @@ if ! "$python" -c 'import sys; sys.exit(sys.version_info < (2,4) or sys.version_ exit 1 fi -if test -z "$target_list" ; then +if test -z "${target_list+xxx}" ; then target_list="$default_target_list" else target_list=`echo "$target_list" | sed -e 's/,/ /g'`