tree 08baa34f65a0c8d8aa3c137ccd724b5f8659ffe2
parent 8d8ccd3bc97e547f4719a2d112408b9e11d14193
author Primiano Tucci <primiano@google.com> 1511799920 +0000
committer Primiano Tucci <primiano@google.com> 1511799920 +0000

Split proto zero/lite/full generation

Different targets require different proto variants. Specifically:
- Writers of trace data (e.g., the code that reads the raw ftrace
  buffer and generates proto) require protozero, for fast writing.
- Readers of trace data (e.g., the tracing service) require
  protobuf lite, for safe decoding.
- Tests occasionally require protobuf full, for introspection.

This CL separates the output directory of these proto targets into
out/gen/protos_{zero,lite,full} so different targets can include
different proto variants.

Also it makes it so that the protozero_library doesn't implicitly
generate also the lite .pb.{cc,h} protos, in order to avoid mixing
different proto variants in different folders.

Furthermore, from now on, proto_out_dir must be explicitly set to
either "protos_full", "protos_lite" or "protos_zero" for each
proto target.

Change-Id: Ieb51f36bb3f7c42b6ebc1f2feb29c6247de1e070