Protocol Buffers - Google's data interchange format (grpc依赖) https://developers.google.com/protocol-buffers/

History

Adam Cozzette a7b0421c78 Breaking change: make protobuf comply with the C++ layering check This check enforces that each C++ build target has the correct dependencies for all headers that it includes. We have many targets that were not correct with respect to this check, so I fixed them up. I also cleaned up the C++ targets related to the well-known types. I created a cc_proto_library() target for each one and removed the :wkt_cc_protos target, since this was necessary to satisfy the layering check. I deleted the //src/google/protobuf:protobuf_nowkt target and deprecated :protobuf_nowkt, because the distinction between the :protobuf and :protobuf_nowkt targets was not really correct. Neither one exposed the headers for the well-known types in a way that was valid with respect to the layering check, and the idea of bundling all the well-known types together is not idiomatic in Bazel anyway. This is a breaking change, because the //:protobuf target no longer bundles the well-known types. From now on they should be accessed through the new //:*_cc_proto aliases in our top-level package. I renamed the :port_def target to :port, which simplifies things a bit by matching our internal name. The original motivation for this change was that to move utf8_range onto our CI infrastructure, we needed to make its dependency rules_fuzzing compatible with Bazel 6. The rules_fuzzing project builds with the layering check, and I found that the process of upgrading it to Bazel 6 made it take a dependency on protobuf, which caused it to break due to layering violations. I was able to work around this, but it would still be nice to comply with the layering check so that we don't have to worry about this kind of thing in the future. PiperOrigin-RevId: 595516736		11 months ago
..
test	Shorten our license headers into an abbreviated form that references LICENSE instead of including it in full.	1 year ago
BUILD.bazel	Breaking change: make protobuf comply with the C++ layering check	11 months ago
README.md	Add source distribution packaging rules (#9835 )	3 years ago
build_systems.bzl	Check-in bootstrapped Java features for Bazel and CMake	1 year ago
cc_dist_library.bzl	Move utf8_range into the protobuf repo	1 year ago

README.md

Protobuf packaging

This directory contains Bazel rules for building packaging and distribution artifacts.

Everything in this directory should be considered internal and subject to change.

Protocol compiler binary packaging

The protocol compiler is used in binary form in various places. There are rules which package it, along with commonly used .proto files, for distribution.

Source distribution packaging

Protobuf releases include source distributions, sliced by target language (C++, Java, etc.). There are rules in this package to define those source archives. These depend upon pkg_files rules elsewhere in the repo to get the contents.

The source distribution files should include the outputs from autogen.sh, but this isn't something we can reliably do from Bazel. To produce fully functioning source distributions, run autogen.sh before building the archives (this populates the necessary files directly into the source tree).

C++ runtime binary distribution

The cc_dist_library rule creates composite libraries from several other cc_library targets. Bazel uses a "fine-grained" library model, where each cc_library produces its own library artifacts, without transitive dependencies. The cc_dist_library rule combines several other libraries together, creating a single library that may be suitable for distribution.