<div dir="ltr">Afaik Bitbake does not currently have that capability. It's a feature I've wanted to add for a long time, but it hasn't been a priority for us up to now. I believe patches to add such a feature would be welcomed. I'd suggest opening a bug in bugzilla for tracking potential future development of such a feature.</div><br><div class="gmail_quote"><div dir="ltr">On Mon, Apr 2, 2018 at 3:23 PM Daniel Levin <<a href="mailto:dendy.ua@gmail.com">dendy.ua@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">In short: does bitbake support dependency graph recalculation at build time?<div><br></div><div>I am looking for a dependency resolution similar to BYPRODUCTS in CMake and restat in Ninja.</div><div><br></div><div>In other words when task _after_ execution might tell that output did not actually change. So all dependencies of that target should not be updated. Even when initially they were treated as (potentially) to be updated.</div><div><br></div><div>Usually in CMake that results in remaining task count decreased instantly during build time, because in fact they must not be running.</div><div><br></div><div>I found documentation in bitbake about task _input_ checksum, which is used to evaluate whether task need to be executed.</div><div>So I am looking for the similar checksum for the task _output_. And when task does not change that output checksum means that dependencies of that output does not need to be triggered.</div><div><br></div><div>If this topic is well known and documented then could you please point me to the appropriate section in the documentation?</div><div><br></div><div>Thanks,</div><div>Daniel</div></div>
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