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<TITLE>sane-devel: Re: sane.init() and version_code</TITLE>
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<META NAME="Author" CONTENT="Henning Meier-Geinitz (hmg-ml@gmx.de)">
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<META NAME="Subject" CONTENT="Re: sane.init() and version_code">
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<H1>Re: sane.init() and version_code</H1>
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<!-- received="Thu Jun 8 09:51:33 2000" -->
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<!-- sent="Thu, 8 Jun 2000 18:47:38 +0200" -->
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<!-- name="Henning Meier-Geinitz" -->
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<!-- subject="Re: sane.init() and version_code" -->
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<!-- inreplyto="200006080544.WAA24045@grieg.holmsjoen.com" -->
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<STRONG>From:</STRONG> Henning Meier-Geinitz (<A HREF="mailto:hmg-ml@gmx.de?Subject=Re:%20sane.init()%20and%20version_code&In-Reply-To=<20000608184738.A587@hmg1.vortex.swb.de>"><EM>hmg-ml@gmx.de</EM></A>)<BR>
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<STRONG>Date:</STRONG> Thu Jun 08 2000 - 09:47:38 PDT
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<LI><STRONG>Previous message:</STRONG> <A HREF="0067.html">Benjamin Hell: "Re: Problems with sane-scsi"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0061.html">Randolph Bentson: "sane.init() and version_code"</A>
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<P>
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Hi,
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<BR>
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<P>On Wed, Jun 07, 2000 at 10:44:11PM -0700, Randolph Bentson wrote:
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<BR>
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<EM>> I just discovered that sane_init didn't return a different version_code
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</EM><BR>
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<EM>> when I upgraded from 1.0.1 to 1.0.2. I traced this back to discover
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</EM><BR>
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<EM>> a decoupling between lines containing
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</EM><BR>
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<EM>> VERSION=1.0.2
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</EM><BR>
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<P>This is the version of the SANE distribution.
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<BR>
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<P><EM>> found in include/sane/config.h and
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</EM><BR>
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<EM>> #define SANE_VERSION_CODE(major, minor, build) \
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</EM><BR>
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<P>This is a macro to set up a version code for the backends. Only the first
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<BR>
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(major) part is fixed (it must be the major number of the SANE standard to
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<BR>
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which it conforms). The minor and build is up to the backend.
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<BR>
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<P>These two versions don't correspond at the moment.
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<BR>
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<P><EM>> The "2" in "1.0.2" appears to be from "V_REV" in configure.in, but
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</EM><BR>
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<EM>> "build" seems to get only the hard-coded value of "0" in all the backends.
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</EM><BR>
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<P>Not true at least for mustek and umax (at least the CVS versions). But you
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<BR>
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are right for most of the other backends. The minor and build version number
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<BR>
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can bes set by the backend at will. The recommendation is to increase minor
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<BR>
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with every realease and build with every build of the backend. As far as I
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<BR>
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see nobody follows this recommendation.
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<BR>
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<P><EM>> If the intent of "build" is to distinguish various builds of a given
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</EM><BR>
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<EM>> backend, shouldn't the various backend drivers use something other
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</EM><BR>
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<EM>> than "0",
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</EM><BR>
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<P>In my opinion, yes.
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<BR>
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<P><EM>> and don't we then need some way to get the V_REV out of the
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</EM><BR>
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<EM>> whole package?
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</EM><BR>
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<P>You mean x.y.z with x=standard version, y=sane distribution version and
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<BR>
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z=build of backend? So the package would have a version of x.y. I think the
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<BR>
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sane package had 2-part version numbers some time ago (1.01?), I don't know
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<BR>
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why this was changed. I think this would be more consistant but I don't know
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<BR>
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if it's worth it.
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<BR>
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<P>By the way: SANE standard 1.01 (two version numbers only) states that the
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<BR>
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API has version 0 (page 13, section 4). This is a typo, isn't it?
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<BR>
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<P>Bye,
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<BR>
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Henning
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<BR>
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<P><P><PRE>
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--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20sane.init()%20and%20version_code&In-Reply-To=<20000608184738.A587@hmg1.vortex.swb.de>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0069.html">Jochen Eisinger: "Re: New Interface sanei_pa4s2..."</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0067.html">Benjamin Hell: "Re: Problems with sane-scsi"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0061.html">Randolph Bentson: "sane.init() and version_code"</A>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Thu Jun 08 2000 - 09:52:27 PDT</EM>
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