bazel query for sources includes proto target

[brice.r...@gmail.com]

I'm querying for the list of c++ sources in my project, to build the project description for my IDE (QtCreator). I'm using the following query:

bazel query 'labels(srcs, kind("cc_.* rule", ...)) union labels(hdrs, kind("cc_.* rule", ...))'

unfortunately it also returns the protobuf "target", such as:
//vehicle/common/roads:rn2_proto
for file
vehicle/common/roads/rn2.proto

Is my query wrong? Or is it a bug in bazel query? Or is it the proto rule that list the wrong item in its srcs field?

[Alex Humesky]

It's probably better to put the protos in the deps attribute. I'm a little surprised bazel didn't complain about the proto being in the srcs attr. Which proto rules are you using?

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[Brice Rebsamen]

seems like one of my colleagues cobbled the rule together from some reference... Is there a standard protobuf bazel rule that one should use?

[Alex Humesky]

Ah, I see, then it could be doing anything.

It's probably generating cc files from the protocol buffer compiler, so those cc files will need to go into a cc_library at some point.

Bazel query can be kind of a fiddly thing. You might try using the "source file" and "generated file" patterns for kind. For example, if you have a single cc_binary that everything goes into, you could try 'kind("source file", //my/package/my_cc_binary) union kind("generated file", //my/package/my_cc_binary)'

There's cc_proto_library here from the protobuf library itself: https://github.com/google/protobuf/blob/master/protobuf.bzl

I've never used it though.