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Re: [bug #40639] GNU Make with profiling information

From: Paul Smith
Subject: Re: [bug #40639] GNU Make with profiling information
Date: Sat, 11 Jan 2014 13:58:58 -0500

Sorry, I've been mostly away from my systems recently.

On Wed, 2013-12-18 at 13:28 +0200, Eddy Petrișor wrote:

> Thanks for clarifying this. Could you please confirm if the general
> direction of the the is OK in the latest patch I sent?

I will take a look.

> What it is in scope and what I would need help with is adding relative
> time stamp support in the profiling info instead of absolute time
> stamps. When analyzing the 'simple' output I realised the graphs
> looked awful because there was such such a scale difference between
> the time stamp and duration.
> The absolute time stamp also doesn't fit well worth the scope of the
> 'simple' output.

Does it have to be relative to the start of the entire build (user's
invocation of make)?

I understand the interest in the amount of time a given job takes to
run, but I guess I don't understand the need for a "start time offset"
at all.  Isn't it sufficient to record the start time of a job, then
when it's complete show the elapsed time for that job?  Or recipe?  Or

> I tried to pass down a reference time stamp through an environment
> variable, but I am missing something from the processing since
> submakes don't see the variable I defined. 

I'll take a look.

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