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:date:from:to:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; q=dns; s=
	default; b=RxDjsAXPfo5qT2ydfEOztieh75RAzIYHkp6UIA39LVScMcjU2WmPO
	K3DllNAdGuCPb3JtkuwCcnl2/gD1Ybuwo6DPN4wVe53M3QZ2mRXMhmct/dZCNvEM
	LyIbC3oH3Khuu3j/7o/wkfixIFM+Da4nfoP4EMHTpSyNXSg2ulsvsY=
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:date:from:to:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; s=default;
	 bh=5VeLO7Bs+i54gvLfryyHPp7/IAo=; b=aVBKp9fQp8ItQoobGlOkeoTu3UJa
	F53m75MK9inA6E4U/3srbVYfD2Bl1UkMzRi/ZC3NRFO0nzO19i9k5x0v964404MQ
	ARmau8sJzbPevZrIDEtKHgK/7bpR9WaXZgwXjCTfuhwagFlix2mf3pn3ZBF70gi6
	oFE4HwDbd7B0SbE=
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: No, score=-5.4 required=5.0 tests=AWL,BAYES_00,KAM_LAZY_DOMAIN_SECURITY autolearn=no version=3.3.2
X-HELO: calimero.vinschen.de
Date: Fri, 14 Aug 2015 17:44:08 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Cygwin version detection at run time
Message-ID: <20150814154408.GJ28349@calimero.vinschen.de>
Reply-To: cygwin AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
References: <CAKw7uVjccyLMYEQcxmZ6qHeAkGoowBB+-6VG-eu59_o4h6RKNQ AT mail DOT gmail DOT com> <55CDF6F5 DOT 6030202 AT cs DOT umass DOT edu> <CAKw7uVjVdOFi4MJayZ485Sm=S7NvwCYwg_2qU-eT_pWLkSEX0Q AT mail DOT gmail DOT com>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha256;	protocol="application/pgp-signature"; boundary="YrlhzR9YrZtruaFS"
Content-Disposition: inline
In-Reply-To: <CAKw7uVjVdOFi4MJayZ485Sm=S7NvwCYwg_2qU-eT_pWLkSEX0Q@mail.gmail.com>
User-Agent: Mutt/1.5.23 (2014-03-12)

--YrlhzR9YrZtruaFS
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Aug 14 17:08, V=C3=A1clav Haisman wrote:
> On 14 August 2015 at 16:11, Eliot Moss <moss AT cs DOT umass DOT edu> wrote:
> > On 8/14/2015 9:56 AM, V=C3=A1clav Haisman wrote:
> >>
> >> Hi.
> >>
> >> I am trying to find out Cygwin version at run time.
> >>
> >> I have noticed that there is `cygwin_internal (CW_GETVERSIONINFO)` API
> >> for this. However, it seems that the `cygwin_version_info` structure
> >> this call is supposed to fill in is not publicly available and is only
> >> declared internally in `winsup/cygwin/cygwin_version.h`.
> >>
> >> Am I right that my only option is either to copy the internal
> >> declaration of the structure or to use `/proc/version` and parse the
> >> version string out of that?
> >
> >
> > There's uname, whose options allow getting various parts of what
> > /proc/version gives you.  uname is also somewhat portable across
> > different flavors of linux ...
>=20
> Never mind, I have figured it out. The  `cygwin_internal
> (CW_GETVERSIONINFO)`  actually returns a pointer to string which can
> be parsed reliably. I have used it.

cygwin_internal(CW_GETVERSIONINFO) is an API for non-Cygwin tools like
cygcheck, not for general consumption.  For a Cygwin executable, better
use uname(2) instead.


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

--YrlhzR9YrZtruaFS
Content-Type: application/pgp-signature

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
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=5CW6
-----END PGP SIGNATURE-----

--YrlhzR9YrZtruaFS--