X-Recipient: archive-cygwin@delorie.com
DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:from:to:subject:date:message-id:references
	:in-reply-to:content-type:content-transfer-encoding
	:mime-version; q=dns; s=default; b=ALUolf9XIa6fH4Wkzg1BjoJ94CxKQ
	oHpfkDGLFaDYvd2Vpsa+GcNVv7NaG+4dNcBBGt4XEPnlFZR5KtwwG0swanFXUwYF
	Ep4MFAMrneUSRSVwf6/o++iahuW5tE4r9PIqWjev/T4LcPYvxIs9zl6w1GVwiQVv
	DApkx3BQrjx0gE=
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:from:to:subject:date:message-id:references
	:in-reply-to:content-type:content-transfer-encoding
	:mime-version; s=default; bh=EykOc97IabLzdT7kch4Cv8hawzk=; b=mO0
	unTanoKEnldwwcXjbdDGRYocRSdxAsRH7RadDrQrs1+YPywz45SfEtmd5uesYSHJ
	czlJbcyfPelKQvpLF9mdKG/XVZWJKFGIDse4a70WiqcsmEcjmbfiLn9klUWZ41kW
	mxuHB191jz6hON3XJ7JQHvjSpaao0TtFAhBObdzc=
Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm
List-Id: <cygwin.cygwin.com>
List-Subscribe: <mailto:cygwin-subscribe@cygwin.com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin@cygwin.com>
List-Help: <mailto:cygwin-help@cygwin.com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner@cygwin.com
Mail-Followup-To: cygwin@cygwin.com
Delivered-To: mailing list cygwin@cygwin.com
Authentication-Results: sourceware.org; auth=none
X-Virus-Found: No
X-Spam-SWARE-Status: No, score=-0.6 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE,SPF_HELO_PASS,SPF_PASS autolearn=ham version=3.3.2
X-HELO: emea01-db3-obe.outbound.protection.outlook.com
From: Denis Washington <denis@denisw.de>
To: Achim Gratz <Stromeko@NexGo.DE>, "cygwin@cygwin.com" <cygwin@cygwin.com>
Subject: RE: GCC / make escaping differences
Date: Fri, 13 Mar 2015 11:20:08 +0000
Message-ID: <DB3PR05MB0763BDE3650C3BC4F4C97A65A2070@DB3PR05MB0763.eurprd05.prod.outlook.com>
References: <DB3PR05MB0763302D3CA95D5946191175A2070@DB3PR05MB0763.eurprd05.prod.outlook.com> <loom.20150313T105904-476@post.gmane.org>
In-Reply-To: <loom.20150313T105904-476@post.gmane.org>
authentication-results: NexGo.DE; dkim=none (message not signed) header.d=none;
x-microsoft-antispam:	UriScan:;BCL:0;PCL:0;RULEID:;SRVR:DB3PR05MB0762;UriScan:;BCL:0;PCL:0;RULEID:;SRVR:DB3PR05MB0892;
x-forefront-antispam-report: BMV:1;SFV:NSPM;SFS:(10019020)(6009001)(51704005)(2900100001)(15975445007)(75402003)(54356999)(46102003)(87936001)(77156002)(122556002)(74482002)(2656002)(50986999)(102836002)(92566002)(33656002)(76576001)(2501003)(76176999)(40100003)(107886001)(74316001)(62966003)(86362001)(2950100001)(19580395003)(66066001);DIR:OUT;SFP:1102;SCL:1;SRVR:DB3PR05MB0762;H:DB3PR05MB0763.eurprd05.prod.outlook.com;FPR:;SPF:None;MLV:sfv;LANG:en;
x-microsoft-antispam-prvs: <DB3PR05MB0762D310F5A938174D9DFAB3A2070@DB3PR05MB0762.eurprd05.prod.outlook.com>
x-exchange-antispam-report-test: UriScan:;
x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(601004)(5002009)(5005006);SRVR:DB3PR05MB0762;BCL:0;PCL:0;RULEID:;SRVR:DB3PR05MB0762;
x-forefront-prvs: 05143A8241
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-originalarrivaltime: 13 Mar 2015 11:20:08.4362 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: ad881f14-eaa8-485d-ad61-b28111a91e12
X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB3PR05MB0762
X-OriginatorOrg: denisw.de
X-IsSubscribed: yes
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id t2DBKTDQ005690

Achim Gratz writes:
> Denis Washington <denis <at> denisw.de> writes:
> > I suspected that this had something to do with the gcc command defined in
> the Makefile, which includes
> > backslashes to escape quotes in -D values like this:
> >
> >     -DNOKOGIRI_LIBXML2_PATH\=\"/home/.../2.9.2\"
> -----------------------------^
> 
> I'd rather suspect the problem here.

Maybe, but in my eyes that wouldn't explain why this is a GCC compilation error at the line where NOKOGIRI_LIBXML2_PATH is expanded, rather than an shell syntax error. Also, \= seems to cause no problem when passed to bash, as explained.

FYI, my understanding from looking at Nokogiri's extconf.rb (which generates the Makefile) is that the escaping is the result of calling Ruby's Shellwords#shellescape method [1] on the string '-DNOKOGIRI="/home/.../2.9.2"', so I guess one can assume that the result is valid bourne shell syntax.

Regards,
Denis

[1] http://ruby-doc.org/stdlib-1.9.3/libdoc/shellwords/rdoc/Shellwords.html#method-c-shellescape


--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple