Access build information from skylark rule/macro?

[Ming Zhao]

Hi,

I'm writing a skylark rule to allow me to generate deb package using bazel.
Like stamping when linking cc_binary, I would like to encode some
build information into the debian package, is there any API/document
talking about what kind information can be presented in the build info
and how to access them within skylark rules?

Thanks!

[Han-Wen Nienhuys]

Unfortunately, there is no documentation. Lukacs teased it apart from
the original google code, so he might know better.

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Han-Wen Nienhuys
Google Munich
han...@google.com

[Lukács T. Berki]

Bazel currently does not output anything else in the build stamp files than the value of --embed_label:

https://github.com/google/bazel/blob/master/src/main/java/com/google/devtools/build/lib/bazel/BazelWorkspaceStatusModule.java#L195

During the build, it's theoretically written into stable-status.txt and volatile-status.txt (the latter contains data that is usually different in every build, e.g. the current time, currently empty in Bazel), but I don't think it's available from Skylark at the moment. I think (paging Laurent!) it could be pretty easily made available, though.

For the time being, I filed https://github.com/google/bazel/issues/210 to track this.

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Lukács T. Berki | Software Engineer | lbe...@google.com | 

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