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:subject:to:references:from:reply-to:message-id
	:date:mime-version:in-reply-to:content-type
	:content-transfer-encoding; q=dns; s=default; b=SYtT+q7INGfC4rRU
	AgnXLMRHgPgIBx6dUYXtep4L8aqK7/0UKYEJmtgSHfwlQmahVCiLpfirsnE5HSN4
	BQdCG6pN/Gs+iWi9qTKX6ZE7qbn+ZM2Sy7zQIiWPfjrEvo4Q8hH3lAAPj7Plj0pC
	SWPW4Nkg1PlQA4uNkPijpCF+npQ=
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:subject:to:references:from:reply-to:message-id
	:date:mime-version:in-reply-to:content-type
	:content-transfer-encoding; s=default; bh=6vbd7Nr6lhMy2CbxI09x94
	OpSbM=; b=a+Wc322uanYK73O6lbr8Vbza7QCy9MFZ4Ilkq8dAjMY1nZgxHF/+XO
	/wF3R+Hc8uOk08EzvIB/MGpNl61H4erRMaU+gKsVkLTP4zklg+C0Hd+3m4Fz71R5
	dyXgyjLm3i35lQ6xUeSlYteqVYNiZUjR4NtzMf0r8RoRGoEh6x8cY=
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-Virus-Found:	No
X-Spam-SWARE-Status:	=?ISO-8859-1?Q?No, score=-1.4 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,RCVD_IN_SORBS_SPAM,SPF_PASS autolearn=no version=3.3.2 spammy=kaz, Kaz, it.=c2, DLLs.=c2?=
X-HELO:	mail-io0-f174.google.com
X-Google-DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:reply-to:message-id :date:user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=YczEg0h5DNwJn53DLNe/Hd1FKnxXFIMGy8dPC8qtiUY=; b=tkbTuP3+tYP6tdGjLVU2tdBdvP/pR+AY8M6gj6sdNeSDQWFVWPt+TLhheAO4lTJ/AW rttWVzGGMlE+iy7WT6BYTihy4UYO5wDu3wLUOPz9K5dv62CUAG7G83YcWv5jcdeJGXG+ tSwgD0WYlZ070ifWDPI94mDpGJ1xpj5P+KoUJo+3s3g+w7tzT7JyVz8i9eUpZAASSn10 r8UhRWrcr4y9mybWuMq7bEu0UGyOsE+NkfgfOcHcemMj7Lz7WD4KXBTjsFurkOk2Orqu PVzolfgmCK/e3sLKI39q5Tuuc6i9TrXEn5O9GXQGFZkOkx4WCXNl0BSNu/GJnrw9XM5H JA2A==
X-Gm-Message-State:	AHPjjUhGD9LuiiQdpI9zq+fh8cQEObnFTVL3cWZT8uJGytFcdzk9lWgM kG43/RWTs//9aCOl
X-Google-Smtp-Source:	AOwi7QBt2qAyHna93Iw7NrRmkjSXV4MXcvWiihkcM7VBgrIKmQ2VVlGI7A99pJQqpIlH9O0NX3m5hw==
X-Received:	by 10.107.58.138 with SMTP id h132mr8926413ioa.112.1505491626815; Fri, 15 Sep 2017 09:07:06 -0700 (PDT)
Subject:	Re: Problem with differences with DLOPEN / DLSYM compared to ubuntu (16.04) / debian (stretch).
To:	cygwin AT cygwin DOT com
References:	<a39828e5534f3c67a59f404bb624c1d5 AT mail DOT kylheku DOT com> <c1ea6bf0-171d-4f71-ee4e-c79f25214975 AT fhoosh DOT com>
From:	cyg Simple <cygsimple AT gmail DOT com>
Reply-To:	cygwin AT cygwin DOT com
Message-ID:	<94ac1558-0d01-2325-5a91-92e8b867a5bd@gmail.com>
Date:	Fri, 15 Sep 2017 12:07:06 -0400
User-Agent:	Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0
MIME-Version:	1.0
In-Reply-To:	<c1ea6bf0-171d-4f71-ee4e-c79f25214975@fhoosh.com>
X-IsSubscribed:	yes

Please consider using an interleaving method of posting on this list.
Top posting is considered rude.

On 9/15/2017 9:51 AM, Gary Schneir wrote:
> Thanks for the response but I am a little confused by it.  If Cygwin is
> supposed to provide POSIX API functionality and DLOPEN / DLSYM are
> supported in CYGWIN, then I shouldn't care about the underlying
> complexity or restrictions of running within the Windows environment and
> using DLLs.  The behavior should be the same as in other POSIX environments.
> 

You presented your case well and I was waiting on someone familiar with
the code to respond.  I'm not sure that would be Kaz, he was just trying
to be helpful from his experiences.  I agree with your surmise that
Cygwin should perform similar results as Linux in this case.

> 
> If you are saying that I did not include some sort of
> __declspec(dllexport) directive in my code so that it can find my
> symbols, that is something else but you indicate that you think cygwin
> hides that complexity in shared libraries.
> 

Actually it would be binutils, regardless of Cygwin or MinGW, that is
trying to hide the complexity of needing to supply the
__declspec([export|import]) declarations.  The logic for that is a bit
confusing but if none is given then all symbols are exported.

-- 
cyg Simple

--
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 -