X-Recipient:	archive-cygwin AT delorie DOT 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-id:content-transfer-encoding
	:mime-version; q=dns; s=default; b=fxrbJV4i0VcnRzpgp+VKR4W4BN/SA
	HXR+7RhPkZXdplIbYWj+5rkM5BhhMUOKFWxf+5jxzeqcivCJW/1DMko/Wpetue5e
	WCrNT/p+Lz0iuvZM2vKieDqcoTnoZ6F6VtmW+CMRhpNL7+glcbqPdPKNPwaSgnd0
	YpFfNObxMXSc0A=
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-id:content-transfer-encoding
	:mime-version; s=default; bh=qhiUk89G3Yo0gbrTYzg/ije0jCk=; b=jET
	QCevnN/STwiOg5q1iIQb3YG+QGV5Vn9bbJ9L7dQQQtQW69hr2hOPJM4TiKtprNUf
	Ki7HOkQ2/szWF0dQnYUMkwTH8gwj2pO1T3LSbXWgFlwGaBuE8R96KKMeUEzKYmRh
	Z5k9xeR/zVlkx7bSqxeQzVPmfaa215Bo8Szx/OF4=
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
Authentication-Results:	sourceware.org; auth=none
X-Spam-SWARE-Status:	No, score=-1.9 required=5.0 tests=AWL,BAYES_00,MIME_BASE64_BLANKS,RCVD_IN_DNSWL_NONE,SPF_HELO_PASS,SPF_PASS autolearn=ham version=3.3.2 spammy=
X-HELO:	NAM05-DM3-obe.outbound.protection.outlook.com
DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=cornell.edu; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=VKRpfvgqpWpI8xKwSRLMIPa/OU3/xgQnr2rqiIpP5tw=; b=Z8mlFlpDT0N33Nm34WPslCu2IQRyANKZQBONR9vvYM7xnP2ZkVDHP4V5khysWfrdH9GKBTTwr9tYHby2RsWqnQXmf39lf7vBjO//7xXSPgx0G1tza8/UW3fNCgY1NpSvd5he96e2mE9zyx1Gzk89l2LQytUi3BglJm45Usk9K84=
From:	Ken Brown <kbrown AT cornell DOT edu>
To:	"cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject:	Re: Missing `alloca` symbol - help?
Date:	Tue, 16 Oct 2018 02:26:04 +0000
Message-ID:	<771d665d-b7bd-18b8-44b3-59441d3fbc21@cornell.edu>
References:	<CAGnQBS2mTCZvMuALwY0PVkZaOo3AvjCpJkHXSfzfih9vEvfo7Q AT mail DOT gmail DOT com>
In-Reply-To:	<CAGnQBS2mTCZvMuALwY0PVkZaOo3AvjCpJkHXSfzfih9vEvfo7Q@mail.gmail.com>
user-agent:	Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1
received-spf:	None (protection.outlook.com: cornell.edu does not designate permitted sender hosts)
authentication-results:	spf=none (sender IP is ) smtp.mailfrom=kbrown AT cornell DOT edu;
MIME-Version:	1.0
X-IsSubscribed:	yes
X-MIME-Autoconverted:	from base64 to 8bit by delorie.com id w9G2QIaX001988

On 10/15/2018 9:20 PM, Murray Christopherson wrote:
> I'm not certain this is a problem with Cygwin, but I am unable to find any
> issue by looking over the project in question, so I thought I'd ask. Is
> this an obvious bug, either in Cygwin or the project itself?
> [...]
> # Observed result
> Fails to install. Particularly, the error output makes multiple mentions of
> `undefined reference to `alloca'` during linking (full error log at
> https://github.com/theacodes/cmarkgfm/issues/13).
> 
> # Notes
> As far as I can tell, `alloca` is a standard Unix function (though
> deprecated). Also, in Cygwin, `/usr/includes/alloca/h` exists, suggesting
> the function _should_ exist to be linked without further packages?

alloca is defined in /usr/include/alloca.h as a macro expanding to 
__builtin_alloca.  The linking error you report suggests that there's a missing 
"#include <alloca.h>" in the source code that's being compiled.  This is also 
confirmed by the gcc warnings in your full log.

Ken

--
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

- Raw text -