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Re: asynchronous make(1), anyone?
On Wed, Apr 11, 2012 at 05:01:34PM -0500, David Young wrote:
> You can save a programmer who is in an edit-compile-test loop some
> effort at the keyboard if, as soon as they write a new version of some
> source file, the computer automatically recompiles their program.
> One way to automate that is to run make(1) in a tight loop,
> while true; do
> make <targets>
> but I think that to do that fast enough that the programmer does not
> have to wait very often for the computer, you would have to be very
> fast, and the computer will waste a lot of energy re-running make(1).
> How hard would it be to make make(1) sleep until any one of its targets
> was older than its sources, build out-of-date targets, and repeat? This
> may be a good application for kqueue(2)'s EVFILT_VNODE filter?
> Any volunteers to make it so?
Yes, I've been looking for such a tool for some time, and finally wrote
such utility to do just this:
Event Notify Test Runner
entr - a utility for running arbitrary commands when files change.
Uses kqueue(2) to avoid polling.
Feedback is welcome!
Eric Radman | http://eradman.com
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