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20 Sep 2017 22:39:47 +0200 Message-ID: <1505939987.4443.12.camel@skynet.be> Subject: Re: meaning of "Automatic date update in version.in" commits From: Philippe Waroquiers To: Petr Ovtchenkov Cc: Matthias Klose , Mikhail Terekhov , Andreas Schwab , binutils@sourceware.org, Joel Brobecker , gdb@sourceware.org Date: Wed, 20 Sep 2017 20:39:00 -0000 In-Reply-To: <20170920233044.28e14949@void-ptr.info> References: <20170920173622.28500ccf@void-ptr.info> <87zi9p2vma.fsf@linux-m68k.org> <20170920202354.3c863857@void-ptr.info> <7217d33d-61eb-732e-dfd6-80ef4908743e@ubuntu.com> <218bf365-1f36-3531-b42b-5b48499992ed@dell.com> <7716f103-1abd-a9fe-14e5-cbbe5a62eb01@ubuntu.com> <1505938054.4443.8.camel@skynet.be> <74520278-52b3-582f-84c2-d2b4ad2b6ef4@ubuntu.com> <1505939204.4443.10.camel@skynet.be> <20170920233044.28e14949@void-ptr.info> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Content-Transfer-Encoding: 8bit X-IsSubscribed: yes X-SW-Source: 2017-09/txt/msg00067.txt.bz2 On Wed, 2017-09-20 at 23:30 +0300, Petr Ovtchenkov wrote: > Why you forget about > >   From info above follow, that "Automatic date update in version.in" > give nothing >   useful. > >   From datestamps equality not follow ABI compatibility from one > side, >   and from datestamps inequality not follow ABI incompatibility from > another side. > > ? > The date in --version -v of valgrind is for sure not used to indicate wh atever kind of compatibility. The addition of the date to --version -v was done following user requests: some users are using development snapshots, and would like to have a (relatively) precise idea of which dev version they are using, and if this dev version is old or not. Of course, starting from the git sha1, they could verify in git the date of the commit, but typing --version -v is fast and easy, in particular if you have no valgrind git repository at hand. During valgrind 3.12 development, the version was only 3.12.0.SVN During 3.13, --version -v added the svn revision. Now, with 3.14, --version -v contains the git sha1 and the date (as an easy way for the user to find what they are running). Philippe