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Re: Dynamic package version numbers with Autoconf and Automake

From: Miles Bader
Subject: Re: Dynamic package version numbers with Autoconf and Automake
Date: Wed, 15 Aug 2012 13:13:21 +0900

Stefano Lattarini <address@hidden> writes:
> Actually, it depends.  Where and why do you use such
> dynamically-computed version number in exactly?

That seems the real question.

My own method is to have:

(1) The "primary" version number is based on VCS info (this is
    obviously unavailable for source trees not based on a VCS

(2) The "autoconf" version number (in AC_INIT) is used as a
    backup/default only when VCS info is unavailable.  This number is
    relatively static, and typically only updated after a release.

(3) The final version info is updated (using VCS info and/or autoconf
    version info) at make time using a script, and when it changes,
    only causes a source file (e.g., version.c) to change.

    This means that although some things are rebuilt after a commit
    (version.o, and relinking of any binaries that use it), the amount
    of rebuilding is relatively minor while still yielding accurate


Non-combatant, n. A dead Quaker.

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