C#

Rules for generating C protobuf .c & .h files and libraries using upb. Libraries are created with the Bazel native cc_library

Rules#

Rule

Description

c_proto_compile

Generates C protobuf .h & .c files

c_proto_library

Generates a C protobuf library using cc_library, with dependencies linked

c_proto_compile#

Warning

This rule is experimental. It may not work correctly or may change in future releases!

Generates C protobuf .h & .c files

Example#

Full example project can be found here

BUILD.bazel#

load("@rules_proto_grpc_c//:defs.bzl", "c_proto_compile")

c_proto_compile(
    name = "person_c_proto",
    protos = ["@rules_proto_grpc_example_protos//:person_proto"],
)

c_proto_compile(
    name = "place_c_proto",
    protos = ["@rules_proto_grpc_example_protos//:place_proto"],
)

c_proto_compile(
    name = "thing_c_proto",
    protos = ["@rules_proto_grpc_example_protos//:thing_proto"],
)

Attributes#

Attributes for c_proto_compile#

Name

Type

Mandatory

Default

Description

protos

label_list

true

List of labels that provide the ProtoInfo provider (such as proto_library from rules_proto)

options

string_list_dict

false

[]

Extra options to pass to plugins, as a dict of plugin label -> list of strings. The key * can be used exclusively to apply to all plugins

verbose

int

false

0

The verbosity level. Supported values and results are 0: Show nothing, 1: Show command, 2: Show command and sandbox after running protoc, 3: Show command and sandbox before and after running protoc, 4. Show env, command, expected outputs and sandbox before and after running protoc

prefix_path

string

false

""

Path to prefix to the generated files in the output directory

extra_protoc_args

string_list

false

[]

A list of extra command line arguments to pass directly to protoc, not as plugin options

extra_protoc_files

label_list

false

[]

List of labels that provide extra files to be available during protoc execution

output_mode

string

false

PREFIXED

The output mode for the target. PREFIXED (the default) will output to a directory named by the target within the current package root, NO_PREFIX will output directly to the current package. Using NO_PREFIX may lead to conflicting writes

Plugins#

c_proto_library#

Warning

This rule is experimental. It may not work correctly or may change in future releases!

Generates a C protobuf library using cc_library, with dependencies linked

Example#

Full example project can be found here

BUILD.bazel#

load("@rules_proto_grpc_c//:defs.bzl", "c_proto_library")

c_proto_library(
    name = "proto_c_proto",
    protos = [
        "@protobuf//:any_proto",
        "@rules_proto_grpc_example_protos//:person_proto",
        "@rules_proto_grpc_example_protos//:place_proto",
        "@rules_proto_grpc_example_protos//:thing_proto",
    ],
)

Attributes#

Attributes for c_proto_library#

Name

Type

Mandatory

Default

Description

protos

label_list

true

List of labels that provide the ProtoInfo provider (such as proto_library from rules_proto)

options

string_list_dict

false

[]

Extra options to pass to plugins, as a dict of plugin label -> list of strings. The key * can be used exclusively to apply to all plugins

verbose

int

false

0

The verbosity level. Supported values and results are 0: Show nothing, 1: Show command, 2: Show command and sandbox after running protoc, 3: Show command and sandbox before and after running protoc, 4. Show env, command, expected outputs and sandbox before and after running protoc

prefix_path

string

false

""

Path to prefix to the generated files in the output directory

extra_protoc_args

string_list

false

[]

A list of extra command line arguments to pass directly to protoc, not as plugin options

extra_protoc_files

label_list

false

[]

List of labels that provide extra files to be available during protoc execution

output_mode

string

false

PREFIXED

The output mode for the target. PREFIXED (the default) will output to a directory named by the target within the current package root, NO_PREFIX will output directly to the current package. Using NO_PREFIX may lead to conflicting writes

deps

label_list

false

[]

List of labels to pass as deps attr to underlying lang_library rule

alwayslink

bool

false

None

Passed to the alwayslink attribute of cc_library.

copts

string_list

false

None

Passed to the opts attribute of cc_library.

defines

string_list

false

None

Passed to the defines attribute of cc_library.

include_prefix

string

false

None

Passed to the include_prefix attribute of cc_library.

linkopts

string_list

false

None

Passed to the linkopts attribute of cc_library.

linkstatic

bool

false

None

Passed to the linkstatic attribute of cc_library.

local_defines

string_list

false

None

Passed to the local_defines attribute of cc_library.

nocopts

string

false

None

Passed to the nocopts attribute of cc_library.

strip_include_prefix

string

false

None

Passed to the strip_include_prefix attribute of cc_library.