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# Copyright 2019 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
template("proto_library") {
assert(defined(invoker.sources), "Need sources for proto_library")
proto_sources = invoker.sources
proto_in_dir = rebase_path(get_path_info(proto_sources[0], "dir"), ".")
if (defined(invoker.proto_out_dir)) {
proto_out_dir = rebase_path(invoker.proto_out_dir, "//")
} else {
# Absolute path to the directory of current BUILD.gn file excluding "//".
proto_out_dir = rebase_path(".", "//")
if (proto_in_dir != ".") {
proto_out_dir += "/$proto_in_dir"
}
}
cc_out_dir = "$root_gen_dir/" + proto_out_dir
rel_cc_out_dir = rebase_path(cc_out_dir, root_build_dir)
protos = rebase_path(invoker.sources, proto_in_dir)
protogens_cc = []
# List output files.
foreach(proto, protos) {
proto_dir = get_path_info(proto, "dir")
proto_name = get_path_info(proto, "name")
proto_path = proto_dir + "/" + proto_name
protogens_cc += [
"$cc_out_dir/$proto_path.pb.h",
"$cc_out_dir/$proto_path.pb.cc",
]
}
action_name = "${target_name}_gen"
source_set_name = "$target_name"
action(action_name) {
visibility = [ ":$source_set_name" ]
script = "//third_party/protobuf/protoc_wrapper.py"
sources = proto_sources
outputs = get_path_info(protogens_cc, "abspath")
args = protos
protoc_label = "//third_party/protobuf:protoc($host_toolchain)"
protoc_path = get_label_info(protoc_label, "root_out_dir") + "/protoc"
args += [
# Wrapper should never pick a system protoc.
# Path should be rebased because |root_build_dir| for current toolchain
# may be different from |root_out_dir| of protoc built on host toolchain.
"--protoc",
"./" + rebase_path(protoc_path, root_build_dir),
"--proto-in-dir",
rebase_path(proto_in_dir, root_build_dir),
"--cc-out-dir",
rel_cc_out_dir,
]
if (defined(invoker.cc_generator_options)) {
args += [
"--cc-options",
invoker.cc_generator_options,
]
}
inputs = [ protoc_path ]
deps = [ protoc_label ]
}
config_name = "${target_name}_config"
config(config_name) {
include_dirs = []
}
source_set(source_set_name) {
forward_variables_from(invoker,
[
"defines",
"testonly",
"visibility",
])
sources = get_path_info(protogens_cc, "abspath")
public_configs = [
"//third_party/protobuf:using_proto",
":$config_name",
]
public_deps = [ ":$action_name" ]
if (defined(invoker.use_protobuf_full) &&
invoker.use_protobuf_full == true) {
public_deps += [ "//third_party/protobuf:protobuf_full" ]
} else {
public_deps += [ "//third_party/protobuf:protobuf_lite" ]
}
deps = []
if (defined(invoker.deps)) {
deps += invoker.deps
}
if (defined(invoker.removed_configs)) {
configs -= invoker.removed_configs
}
if (defined(invoker.extra_configs)) {
configs += invoker.extra_configs
}
}
}
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