Default for building ONOS will be switching to Bazel

[Thomas Vachuska]

Hi everyone,

This is a heads up that in preparation for the upcoming release of ONOS 1.14.0 (Owl), we are switching to using Bazel as the default (and official) means of building ONOS. This means that a number of developer aliases and release scripts that help us manage the release build will start to refer to Bazel rather than to Buck.

To prepare for this change, developers should install Bazel 0.15.2 on their developer machines. (Note that Bazel 0.16.0 and above will not work for ONOS until the next release when we tackle building ONOS with the most recent versions of Java compiler.) Buck build will continue to work, but increasing number of the aliases and scripts will no longer refer to it. The dev environment already knows how to give priority to Bazel built bits when invoking STC.

To install Bazel, please consult documentation here: https://docs.bazel.build/versions/master/install.html

Information on how to import Bazel projects into various IDEs is here: https://docs.bazel.build/versions/master/ide.html

Some basics for building with ONOS are covered here: https://docs.google.com/presentation/d/1ghc1kGIwdkah6nACFofm3s5e731CZmmBPM-V21b_1Bc/edit?usp=sharing 

Expect various changes in this vein to start appearing in the code-base over the course of the next view days. Also, Bazel validation job will be setup on Jenkins very shortly. ONOS 1.14.0-rc1 build will be run early next week.

As usual, please do not hesitate to contact the onos-dev list if you have any issues, questions or suggestions regarding this.

Cheers...

Thomas

[Thomas Vachuska]

One thing I should add is that in order to run Bazel or Buck builds, their counterpart’s cache directories need to be removed. So, in order to run Bazel build, one must first remove the buck-out directory, and conversely, to run Buck build, one must first remove the bazel-* directories from the top of the ONOS workspace.

Failure to do this, will likely result in either build breaking as both Bazel and Buck will mistakenly find build targets in the caches where they should not even be looking.

Thomas

[Andrea Campanella]

Hi All,

I’ve also updated the wiki page here:

https://wiki.onosproject.org/display/ONOS/Building+ONOS+and+executing+unit+tests

To reflect some of these changes and to have a fixed point for tracking the presentation that was linked by Tom.

Thanks, 

Andrea Campanella

Member of Technical Staff at ONF
Member of ONOS Technical Steering Team
Member of Ambassador Steering Team, ONOS and CORD Community

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[mxiaon...@gmail.com]

Can you tell me why used Bazel instead of Buck?Does this changed has any promote to build work?Thanks.

在 2018年8月8日星期三 UTC+8上午1:35:55，tom写道：

在 2018年8月8日星期三 UTC+8上午1:35:55，tom写道：

[laszl...@hubersuhner.com]

The things that I have heard (neglecting cons and my opinions)

1) More reliable builds

2) Faster incremental builds

3) More vanilla code



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________________________________________
From: mxiaon...@gmail.com [mxiaon...@gmail.com]
Sent: 20 December 2018 09:23
To: ONOS Developers
Cc: onos...@onosproject.org
Subject: [onos-dev] Re: Default for building ONOS will be switching to Bazel

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[马肖男]

hi,developer

 I get you point ,thanks.
在 2018年12月20日星期四 UTC+8下午5:33:35，laszlo.papp写道：

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