How to rebuild only changed files?

[Jean-Philippe Brucker]

On Thu, Apr 23, 2020 at 07:42:13AM +0200, Tito wrote:
> > I would also add that for example my own autoconf-based projects have no
> > issue tracking the dependencies and rebuild just changed files. If you
> > claim that just doing make should work, I will try experimenting on few
> 
> Yes I have experienced it that way all this years, only the
> changed files are rebuild most of the times unless (if I recall
> correctly) you touch some upper level header files.

Note that with recent versions of make (4.3), the whole of busybox is
rebuilt every time. I sent a patch last month to fix it:

https://www.mail-archive.com/busybox@busybox.net/msg26520.html

Thanks,
Jean

> 
> > other machines I have access to in order to see if there is something
> > weird with my laptop.
> > 
> > W.
> > 
> 
> Ciao,
> Tito
> 




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