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Date: Fri, 15 May 2009 23:50:14 -0400
From: Charles Wilson <cygwin AT cwilson DOT fastmail DOT fm>
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To: cygwin AT cygwin DOT com
Subject: Re: libtool, how should the version be parsed?
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René Berber wrote:
> Hi,
> 
> I was trying to build some package and it complained that libtool 1.4
> was needed... looking at the version:
> 
> $ libtool --version
> libtool (GNU libtool 1.3081 2009-02-17) 2.2.7a
> 
> Is it 1.3081 or 2.2.7a?

It is 2.2.7a.  You can see that from the announcement here:
http://cygwin.com/ml/cygwin-announce/2009-04/msg00003.html
"[1.7] Updated: {libtool/libltdl7}-2.2.7a-12"
                                   ^^^^^^

Also:

$ cygcheck -cd libtool
Package              Version
libtool              2.2.7a-12

> I see at gnu.org that the latest stable is 2.2.6a, so I suppose the one
> in Cygwin (1.7) is the bleeding edge.  Any trick/idea on how to use it
> with packages that expect something sane as version.

This format
   "libtool (GNU libtool 1.3081 2009-02-17) 2.2.7a"
is the GNU standard, as documented here:
http://www.gnu.org/prep/standards/standards.html#g_t_002d_002dversion

> The first line is meant to be easy for a program to parse; the version
> number proper starts after the last space."

Also

> If the program is a subsidiary part of a larger package, mention the
> package name in parentheses, like this:
>
>      emacsserver (GNU Emacs) 19.30
>
> If the package has a version number which is different from this
> program's version number, you can mention the package version number
> just before the close-parenthesis.

So, if you had build stock libtool-2.2.6(a), and ran --version on it,
you would have seen:

    libtool (GNU libtool 1.nnnn 2008-mm-dd) 2.2.6a

So, next time, kindly refrain from accusing my package of insanity.  But
while we're on the subject...libtool-1.4 dates from 27-Nov-2003, more
than 5.5 years ago...

--
Chuck

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