[p4] Finding the workspace name: is p4config mandatory?

Dave Lewis dlewis78731 at gmail.com
Fri Feb 22 22:21:58 PST 2008

Actually, I would not embed a changenumber for developer builds, I
would only do that for official builds.  I think the environment is
too variable on a developer's machine to produce reliable information.

As some of the replies have shown, the highest changenumber a client
is synced to does not mean you'll get the same set of files if you
sync to that number.  That sounds like double talk, but consider
working on a change.  Files are open for edit, and the developer does
a test build.  In this case, the changenumber info is misleading.
Then the developer submits the change, and now, the client shows that
the highest changenumber in the client's files is the just submitted
changenumber.  The developer, however, may not have synced to the
latest changes before submitting their work. Again, the changenumber
will be misleading.

Considering that there is no control over many of these factors, I
would choose a different approach that indicates some uncertainty with
regard to the status of a developer build.  A possibility might be
that if the client name is not obvious from the environment, to label
the build with its date/time info and "dev" status.

I suppose you could sync the client to a known state before building
it, but I think that's a bit intrusive for a build to do in the
development situation.

I am not too familiar with P4V, but in P4WIN, you can add tools to the
tool menu.  If there is a similar feature in P4V, then starting a
build from P4V can then supply the correct client name, etc.

just a thought,


On Fri, Feb 22, 2008 at 5:06 PM, Steve M. Robbins <steve at sumost.ca> wrote:
> Hi,
>  I should clarify a few things.
>  1) It is perfectly possible to use p4v without setting anything in
>  the environment.  Not the workspace, not P4PORT, not even P4CONFIG.
>  This is how we operate today.
>  2) We typically want developers to be able to build on their machine.
>  3) The developer build is set off outside of p4v: from an IDE, or
>  command line "make", etc.
>  Item #2 implies that I don't just have a problem of setting up 1
>  p4config file for N workspaces on a build server, but an NxM problem
>  where M is the number of developers.  (Alternatively, each developer
>  has to set up N config files.)
>  Granted, this can be done.  It's not rocket science.  But it gives you
>  NxM chances to make a mistake while setting up something that should
>  be mechanically generated (as is done by both CVS and Subversion).
>  When I get to a point like this I figure either I'm abusing the tool,
>  or the the tool is too limited.
>  So what you folks using p4v with large M do?
>  Thanks,
>  -Steve
>  On Fri, Feb 22, 2008 at 09:43:24AM -0600, Steve M. Robbins wrote:
>  > Hi,
>  >
>  > A recent thread on this list concerns adding a changelist number to
>  > C++ code, to which Robert Cowham responded with a suggestion to run a
>  > couple of p4 commands in the root of the workspace [1].  This is easy
>  > to script, but it assumes that the workspace name is available to the
>  > script.
>  >
>  > As a build manager, I would prefer to write one script to be used by
>  > all developers.  Each developer has their own workspace, so the
>  > workspace name cannot be embedded in the script.  Therefore it seems
>  > that the script has to obtain it from the environment.  So either you
>  > have to have it set in the environment (but then who uses just one
>  > client?) or you have to have a p4config file properly set up.
>  >
>  > Is that the case -- or is there another possibility that I'm
>  > overlooking?  Is p4config therefore mandatory even for a shop that
>  > otherwise uses p4v exclusively?
>  >
>  > Now, if p4config is mandatory, is there a way to generate them
>  > automatically?  I have been crafting each of mine by hand, which is
>  > a real nuisance.  It strikes me that the first "p4 sync" could write
>  > the config file for me.
>  >
>  > Thanks,
>  > -Steve
>  >
>  > [1] http://maillist.perforce.com/pipermail/perforce-user/2008-February/023342.html
>  >
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