| # Copyright 2020 The Pigweed Authors |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| # use this file except in compliance with the License. You may obtain a copy of |
| # the License at |
| # |
| # https://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| # License for the specific language governing permissions and limitations under |
| # the License. |
| |
| import("//build_overrides/pigweed.gni") |
| |
| import("$dir_pw_build/error.gni") |
| import("$dir_pw_build/input_group.gni") |
| import("$dir_pw_build/mirror_tree.gni") |
| import("$dir_pw_build/python.gni") |
| import("$dir_pw_build/python_action.gni") |
| import("$dir_pw_build/target_types.gni") |
| import("$dir_pw_third_party/nanopb/nanopb.gni") |
| import("toolchain.gni") |
| |
| # Variables forwarded from the public pw_proto_library template to the final |
| # pw_source_set. |
| _forwarded_vars = [ |
| "testonly", |
| "visibility", |
| ] |
| |
| # Internal template that invokes protoc with a pw_python_action. This should not |
| # be used outside of this file; use pw_proto_library instead. |
| # |
| # This creates the internal GN target $target_name.$language._gen that compiles |
| # proto files with protoc. |
| template("_pw_invoke_protoc") { |
| if (current_toolchain == pw_protobuf_compiler_TOOLCHAIN) { |
| if (defined(invoker.out_dir)) { |
| _out_dir = invoker.out_dir |
| } else { |
| _out_dir = "${invoker.base_out_dir}/${invoker.language}" |
| if (defined(invoker.module_as_package) && |
| invoker.module_as_package != "") { |
| assert(invoker.language == "python") |
| _out_dir = "$_out_dir/${invoker.module_as_package}" |
| } |
| } |
| |
| _includes = |
| rebase_path(get_target_outputs(":${invoker.base_target}._includes"), |
| root_build_dir) |
| |
| pw_python_action("$target_name._gen") { |
| script = |
| "$dir_pw_protobuf_compiler/py/pw_protobuf_compiler/generate_protos.py" |
| |
| python_deps = [ "$dir_pw_protobuf_compiler/py" ] |
| if (defined(invoker.python_deps)) { |
| python_deps += invoker.python_deps |
| } |
| |
| deps = [ |
| ":${invoker.base_target}._includes", |
| ":${invoker.base_target}._sources", |
| ] |
| |
| foreach(dep, invoker.deps) { |
| deps += [ get_label_info(dep, "label_no_toolchain") + "._gen" ] |
| } |
| |
| if (defined(invoker.other_deps)) { |
| deps += invoker.other_deps |
| } |
| |
| args = [ |
| "--language", |
| invoker.language, |
| "--include-file", |
| _includes[0], |
| "--compile-dir", |
| rebase_path(invoker.compile_dir, root_build_dir), |
| "--out-dir", |
| rebase_path(_out_dir, root_build_dir), |
| "--sources", |
| ] + rebase_path(invoker.sources, root_build_dir) |
| |
| if (defined(invoker.plugin)) { |
| inputs = [ invoker.plugin ] |
| args += |
| [ "--plugin-path=" + rebase_path(invoker.plugin, root_build_dir) ] |
| } |
| |
| if (defined(invoker.outputs)) { |
| outputs = invoker.outputs |
| } else { |
| stamp = true |
| } |
| |
| if (defined(invoker.metadata)) { |
| metadata = invoker.metadata |
| } |
| } |
| |
| # Output a .json file with information about this proto library. |
| _proto_info = { |
| label = get_label_info(":${invoker.target_name}", "label_no_toolchain") |
| protoc_outputs = |
| rebase_path(get_target_outputs(":$target_name._gen"), root_build_dir) |
| root = rebase_path(_out_dir, root_build_dir) |
| package = invoker.package |
| |
| nested_in_python_package = "" |
| if (defined(invoker.python_package)) { |
| nested_in_python_package = |
| get_label_info(invoker.python_package, "label_no_toolchain") |
| } |
| |
| dependencies = [] |
| foreach(dep, invoker.deps) { |
| dependencies += |
| rebase_path([ get_label_info(dep, "target_gen_dir") + "/" + |
| get_label_info(dep, "name") + ".json" ], |
| root_build_dir) |
| } |
| } |
| write_file("$target_gen_dir/$target_name.json", _proto_info, "json") |
| } else { |
| # protoc is only ever invoked from pw_protobuf_compiler_TOOLCHAIN. |
| not_needed([ "target_name" ]) |
| not_needed(invoker, "*") |
| } |
| } |
| |
| # Generates pw_protobuf C++ code for proto files, creating a source_set of the |
| # generated files. This is internal and should not be used outside of this file. |
| # Use pw_proto_library instead. |
| template("_pw_pwpb_proto_library") { |
| _pw_invoke_protoc(target_name) { |
| forward_variables_from(invoker, "*", _forwarded_vars) |
| language = "pwpb" |
| plugin = "$dir_pw_protobuf/py/pw_protobuf/plugin.py" |
| python_deps = [ "$dir_pw_protobuf/py" ] |
| } |
| |
| # Create a library with the generated source files. |
| config("$target_name._include_path") { |
| include_dirs = [ "${invoker.base_out_dir}/pwpb" ] |
| visibility = [ ":*" ] |
| } |
| |
| pw_source_set(target_name) { |
| forward_variables_from(invoker, _forwarded_vars) |
| public_configs = [ ":$target_name._include_path" ] |
| deps = [ ":$target_name._gen($pw_protobuf_compiler_TOOLCHAIN)" ] |
| public_deps = [ dir_pw_protobuf ] + invoker.deps |
| sources = invoker.outputs |
| public = filter_include(sources, [ "*.pwpb.h" ]) |
| } |
| } |
| |
| # Generates nanopb RPC code for proto files, creating a source_set of the |
| # generated files. This is internal and should not be used outside of this file. |
| # Use pw_proto_library instead. |
| template("_pw_nanopb_rpc_proto_library") { |
| # Create a target which runs protoc configured with the nanopb_rpc plugin to |
| # generate the C++ proto RPC headers. |
| _pw_invoke_protoc(target_name) { |
| forward_variables_from(invoker, "*", _forwarded_vars) |
| language = "nanopb_rpc" |
| plugin = "$dir_pw_rpc/py/pw_rpc/plugin_nanopb.py" |
| python_deps = [ "$dir_pw_rpc/py" ] |
| } |
| |
| # Create a library with the generated source files. |
| config("$target_name._include_path") { |
| include_dirs = [ "${invoker.base_out_dir}/nanopb_rpc" ] |
| visibility = [ ":*" ] |
| } |
| |
| pw_source_set(target_name) { |
| forward_variables_from(invoker, _forwarded_vars) |
| public_configs = [ ":$target_name._include_path" ] |
| deps = [ ":$target_name._gen($pw_protobuf_compiler_TOOLCHAIN)" ] |
| public_deps = [ |
| ":${invoker.base_target}.nanopb", |
| "$dir_pw_rpc:server", |
| "$dir_pw_rpc/nanopb:client", |
| "$dir_pw_rpc/nanopb:method_union", |
| "$dir_pw_third_party/nanopb", |
| ] + invoker.deps |
| public = invoker.outputs |
| check_includes = false |
| } |
| } |
| |
| # Generates nanopb code for proto files, creating a source_set of the generated |
| # files. This is internal and should not be used outside of this file. Use |
| # pw_proto_library instead. |
| template("_pw_nanopb_proto_library") { |
| # When compiling with the Nanopb plugin, the nanopb.proto file is already |
| # compiled internally, so skip recompiling it with protoc. |
| if (rebase_path(invoker.sources, invoker.compile_dir) == [ "nanopb.proto" ]) { |
| group("$target_name._gen") { |
| deps = [ |
| ":${invoker.base_target}._sources($pw_protobuf_compiler_TOOLCHAIN)", |
| ] |
| } |
| |
| group("$target_name") { |
| deps = invoker.deps + |
| [ ":$target_name._gen($pw_protobuf_compiler_TOOLCHAIN)" ] |
| } |
| } else { |
| # Create a target which runs protoc configured with the nanopb plugin to |
| # generate the C proto sources. |
| _pw_invoke_protoc(target_name) { |
| forward_variables_from(invoker, "*", _forwarded_vars) |
| language = "nanopb" |
| plugin = "$dir_pw_third_party_nanopb/generator/protoc-gen-nanopb" |
| other_deps = [ "$dir_pw_third_party/nanopb:generate_nanopb_proto.action" ] |
| } |
| |
| # Create a library with the generated source files. |
| config("$target_name._include_path") { |
| include_dirs = [ "${invoker.base_out_dir}/nanopb" ] |
| visibility = [ ":*" ] |
| } |
| |
| pw_source_set(target_name) { |
| forward_variables_from(invoker, _forwarded_vars) |
| public_configs = [ ":$target_name._include_path" ] |
| deps = [ ":$target_name._gen($pw_protobuf_compiler_TOOLCHAIN)" ] |
| public_deps = [ "$dir_pw_third_party/nanopb" ] + invoker.deps |
| sources = invoker.outputs |
| public = filter_include(sources, [ "*.pb.h" ]) |
| } |
| } |
| } |
| |
| # Generates raw RPC code for proto files, creating a source_set of the generated |
| # files. This is internal and should not be used outside of this file. Use |
| # pw_proto_library instead. |
| template("_pw_raw_rpc_proto_library") { |
| # Create a target which runs protoc configured with the nanopb_rpc plugin to |
| # generate the C++ proto RPC headers. |
| _pw_invoke_protoc(target_name) { |
| forward_variables_from(invoker, "*", _forwarded_vars) |
| language = "raw_rpc" |
| plugin = "$dir_pw_rpc/py/pw_rpc/plugin_raw.py" |
| python_deps = [ "$dir_pw_rpc/py" ] |
| } |
| |
| # Create a library with the generated source files. |
| config("$target_name._include_path") { |
| include_dirs = [ "${invoker.base_out_dir}/raw_rpc" ] |
| visibility = [ ":*" ] |
| } |
| |
| pw_source_set(target_name) { |
| forward_variables_from(invoker, _forwarded_vars) |
| public_configs = [ ":$target_name._include_path" ] |
| deps = [ ":$target_name._gen($pw_protobuf_compiler_TOOLCHAIN)" ] |
| public_deps = [ |
| "$dir_pw_rpc:server", |
| "$dir_pw_rpc/raw:method_union", |
| ] + invoker.deps |
| public = invoker.outputs |
| check_includes = false |
| } |
| } |
| |
| # Generates Go code for proto files, listing the proto output directory in the |
| # metadata variable GOPATH. Internal use only. |
| template("_pw_go_proto_library") { |
| _proto_gopath = "$root_gen_dir/go" |
| |
| _pw_invoke_protoc(target_name) { |
| forward_variables_from(invoker, "*") |
| language = "go" |
| metadata = { |
| gopath = [ "GOPATH+=" + rebase_path(_proto_gopath) ] |
| external_deps = [ |
| "github.com/golang/protobuf/proto", |
| "google.golang.org/grpc", |
| ] |
| } |
| |
| # Override the default "$base_out_dir/$language" output path. |
| out_dir = "$_proto_gopath/src" |
| } |
| |
| group(target_name) { |
| deps = |
| invoker.deps + [ ":$target_name._gen($pw_protobuf_compiler_TOOLCHAIN)" ] |
| } |
| } |
| |
| # Generates Python code for proto files, creating a pw_python_package containing |
| # the generated files. This is internal and should not be used outside of this |
| # file. Use pw_proto_library instead. |
| template("_pw_python_proto_library") { |
| _pw_invoke_protoc(target_name) { |
| forward_variables_from(invoker, "*", _forwarded_vars + [ "python_package" ]) |
| language = "python" |
| python_deps = [ "$dir_pw_protobuf_compiler:protobuf_requirements" ] |
| |
| if (defined(invoker.python_package)) { |
| python_package = invoker.python_package |
| } |
| } |
| |
| if (defined(invoker.python_package) && invoker.python_package != "") { |
| # This package is nested in another Python package. Depending on this |
| # its python subtarget is equivalent to depending on the Python package it |
| # is nested in. |
| pw_python_group(target_name) { |
| python_deps = [ invoker.python_package ] |
| } |
| |
| # This proto library is merged into another package, but create a target to |
| # collect its dependencies that the other package can depend on. |
| pw_python_group(target_name + "._deps") { |
| python_deps = invoker.deps |
| other_deps = |
| [ ":${invoker.target_name}._gen($pw_protobuf_compiler_TOOLCHAIN)" ] |
| } |
| } else { |
| # Create a Python package with the generated source files. |
| pw_python_package(target_name) { |
| forward_variables_from(invoker, _forwarded_vars) |
| generate_setup = { |
| name = invoker._package_dir |
| version = "0.0.1" # TODO(hepler): Need to be able to set this verison. |
| } |
| sources = invoker.outputs |
| strip_prefix = "${invoker.base_out_dir}/python" |
| python_deps = invoker.deps |
| other_deps = [ ":$target_name._gen($pw_protobuf_compiler_TOOLCHAIN)" ] |
| static_analysis = [] |
| |
| _pw_module_as_package = invoker.module_as_package != "" |
| } |
| } |
| } |
| |
| # Generates protobuf code from .proto definitions for various languages. |
| # For each supported generator, creates a sub-target named: |
| # |
| # <target_name>.<generator> |
| # |
| # GN permits using abbreviated labels when the target name matches the directory |
| # name (e.g. //foo for //foo:foo). For consistency with this, the sub-targets |
| # for each generator are aliased to the directory when the target name is the |
| # same. For example, these two labels are equivalent: |
| # |
| # //path/to/my_protos:my_protos.pwpb |
| # //path/to/my_protos:pwpb |
| # |
| # pw_protobuf_library targets generate Python packages. As such, they must have |
| # globally unique package names. The first directory of the prefix or the first |
| # common directory of the sources is used as the Python package. |
| # |
| # Args: |
| # sources: List of input .proto files. |
| # deps: List of other pw_proto_library dependencies. |
| # inputs: Other files on which the protos depend (e.g. nanopb .options files). |
| # prefix: A prefix to add to the source protos prior to compilation. For |
| # example, a source called "foo.proto" with prefix = "nested" will be |
| # compiled with protoc as "nested/foo.proto". |
| # strip_prefix: Remove this prefix from the source protos. All source and |
| # input files must be nested under this path. |
| # python_package: Label of Python package to which to add the proto modules. |
| # The .python subtarget will redirect to this package. |
| # |
| template("pw_proto_library") { |
| assert(defined(invoker.sources) && invoker.sources != [], |
| "pw_proto_library requires .proto source files") |
| |
| if (defined(invoker.python_module_as_package)) { |
| _module_as_package = invoker.python_module_as_package |
| |
| _must_be_one_source = invoker.sources |
| assert([ _must_be_one_source[0] ] == _must_be_one_source, |
| "'python_module_as_package' requires exactly one source file") |
| assert(_module_as_package != "", |
| "'python_module_as_package' cannot be be empty") |
| assert(string_split(_module_as_package, "/") == [ _module_as_package ], |
| "'python_module_as_package' cannot contain slashes") |
| assert(!defined(invoker.prefix), |
| "'prefix' cannot be provided with 'python_module_as_package'") |
| } else { |
| _module_as_package = "" |
| } |
| |
| if (defined(invoker.strip_prefix)) { |
| _source_root = get_path_info(invoker.strip_prefix, "abspath") |
| } else { |
| _source_root = get_path_info(".", "abspath") |
| } |
| |
| if (defined(invoker.prefix)) { |
| _prefix = invoker.prefix |
| } else { |
| _prefix = "" |
| } |
| |
| _package_dir = "" |
| _source_names = [] |
| |
| # Determine the Python package name to use for these protos. If there is no |
| # prefix, the first directory the sources are nested under is used. |
| foreach(source, rebase_path(invoker.sources, _source_root)) { |
| _path_components = [] |
| _path_components = string_split(source, "/") |
| |
| if (_package_dir == "") { |
| _package_dir = _path_components[0] |
| } else { |
| assert(_prefix != "" || _path_components[0] == _package_dir, |
| "Unless 'prefix' is supplied, all .proto sources in a " + |
| "pw_proto_library must be in the same directory tree") |
| } |
| |
| _source_names += |
| [ get_path_info(source, "dir") + "/" + get_path_info(source, "name") ] |
| } |
| |
| # If the 'prefix' was supplied, use that for the package directory. |
| if (_prefix != "") { |
| _prefix_path_components = string_split(_prefix, "/") |
| _package_dir = _prefix_path_components[0] |
| } |
| |
| assert(_package_dir != "" && _package_dir != "." && _package_dir != "..", |
| "Either a 'prefix' must be specified or all sources must be nested " + |
| "under a common directory") |
| |
| # Define an action that is never executed to prevent duplicate proto packages |
| # from being declared. The target name and the output file include only the |
| # package directory, so different targets that use the same proto package name |
| # will conflict. |
| action("pw_proto_library.$_package_dir") { |
| script = "$dir_pw_build/py/pw_build/nop.py" |
| visibility = [] |
| |
| # Place an error message in the output path (which is never created). If the |
| # package name conflicts occur in different BUILD.gn files, this results in |
| # an otherwise cryptic Ninja error, rather than a GN error. |
| outputs = [ "$root_out_dir/ " + |
| "ERROR - Multiple pw_proto_library targets create the " + |
| "'$_package_dir' package. Change the package name by setting " + |
| "the \"prefix\" arg or move the protos to a different " + |
| "directory, then re-run gn gen." ] |
| } |
| |
| if (defined(invoker.deps)) { |
| _deps = invoker.deps |
| } else { |
| _deps = [] |
| } |
| |
| _common = { |
| base_target = target_name |
| |
| # This is the output directory for all files related to this proto library. |
| # Sources are mirrored to "$base_out_dir/sources" and protoc puts outputs in |
| # "$base_out_dir/$language" by default. |
| base_out_dir = |
| get_label_info(":$target_name($pw_protobuf_compiler_TOOLCHAIN)", |
| "target_gen_dir") + "/$target_name.proto_library" |
| |
| compile_dir = "$base_out_dir/sources" |
| |
| # Refer to the source files as the are mirrored to the output directory. |
| sources = [] |
| foreach(file, rebase_path(invoker.sources, _source_root)) { |
| sources += [ "$compile_dir/$_prefix/$file" ] |
| } |
| |
| package = _package_dir |
| } |
| |
| # For each proto target, create a file which collects the base directories of |
| # all of its dependencies to list as include paths to protoc. |
| generated_file("$target_name._includes") { |
| # Collect metadata from the include path files of each dependency. |
| |
| deps = [] |
| foreach(dep, _deps) { |
| _base = get_label_info(dep, "label_no_toolchain") |
| deps += [ "$_base._includes(" + get_label_info(dep, "toolchain") + ")" ] |
| } |
| |
| data_keys = [ "protoc_includes" ] |
| outputs = [ "${_common.base_out_dir}/includes.txt" ] |
| |
| # Indicate this library's base directory for its dependents. |
| metadata = { |
| protoc_includes = [ rebase_path(_common.compile_dir, root_build_dir) ] |
| } |
| } |
| |
| # Mirror the proto sources to the output directory with the prefix added. |
| if (current_toolchain == pw_protobuf_compiler_TOOLCHAIN) { |
| pw_mirror_tree("$target_name._sources") { |
| source_root = _source_root |
| sources = invoker.sources |
| |
| if (defined(invoker.inputs)) { |
| sources += invoker.inputs |
| } |
| |
| directory = "${_common.compile_dir}/$_prefix" |
| } |
| } else { |
| not_needed(invoker, [ "inputs" ]) |
| } |
| |
| # Enumerate all of the protobuf generator targets. |
| |
| _pw_pwpb_proto_library("$target_name.pwpb") { |
| forward_variables_from(invoker, _forwarded_vars) |
| forward_variables_from(_common, "*") |
| |
| deps = [] |
| foreach(dep, _deps) { |
| _base = get_label_info(dep, "label_no_toolchain") |
| deps += [ "$_base.pwpb(" + get_label_info(dep, "toolchain") + ")" ] |
| } |
| |
| outputs = [] |
| foreach(name, _source_names) { |
| outputs += [ "$base_out_dir/pwpb/$_prefix/${name}.pwpb.h" ] |
| } |
| } |
| |
| if (dir_pw_third_party_nanopb != "") { |
| _pw_nanopb_rpc_proto_library("$target_name.nanopb_rpc") { |
| forward_variables_from(invoker, _forwarded_vars) |
| forward_variables_from(_common, "*") |
| |
| deps = [] |
| foreach(dep, _deps) { |
| _lbl = get_label_info(dep, "label_no_toolchain") |
| deps += [ "$_lbl.nanopb_rpc(" + get_label_info(dep, "toolchain") + ")" ] |
| } |
| |
| outputs = [] |
| foreach(name, _source_names) { |
| outputs += [ "$base_out_dir/nanopb_rpc/$_prefix/${name}.rpc.pb.h" ] |
| } |
| } |
| |
| _pw_nanopb_proto_library("$target_name.nanopb") { |
| forward_variables_from(invoker, _forwarded_vars) |
| forward_variables_from(_common, "*") |
| |
| deps = [] |
| foreach(dep, _deps) { |
| _base = get_label_info(dep, "label_no_toolchain") |
| deps += [ "$_base.nanopb(" + get_label_info(dep, "toolchain") + ")" ] |
| } |
| |
| outputs = [] |
| foreach(name, _source_names) { |
| outputs += [ |
| "$base_out_dir/nanopb/$_prefix/${name}.pb.h", |
| "$base_out_dir/nanopb/$_prefix/${name}.pb.c", |
| ] |
| } |
| } |
| } else { |
| pw_error("$target_name.nanopb_rpc") { |
| message = |
| "\$dir_pw_third_party_nanopb must be set to generate nanopb RPC code." |
| } |
| |
| pw_error("$target_name.nanopb") { |
| message = |
| "\$dir_pw_third_party_nanopb must be set to compile nanopb protobufs." |
| } |
| } |
| |
| _pw_raw_rpc_proto_library("$target_name.raw_rpc") { |
| forward_variables_from(invoker, _forwarded_vars) |
| forward_variables_from(_common, "*") |
| |
| deps = [] |
| foreach(dep, _deps) { |
| _base = get_label_info(dep, "label_no_toolchain") |
| deps += [ "$_base.raw_rpc(" + get_label_info(dep, "toolchain") + ")" ] |
| } |
| |
| outputs = [] |
| foreach(name, _source_names) { |
| outputs += [ "$base_out_dir/raw_rpc/$_prefix/${name}.raw_rpc.pb.h" ] |
| } |
| } |
| |
| _pw_go_proto_library("$target_name.go") { |
| sources = _common.sources |
| |
| deps = [] |
| foreach(dep, _deps) { |
| _base = get_label_info(dep, "label_no_toolchain") |
| deps += [ "$_base.go(" + get_label_info(dep, "toolchain") + ")" ] |
| } |
| |
| forward_variables_from(_common, "*") |
| } |
| |
| _pw_python_proto_library("$target_name.python") { |
| forward_variables_from(_common, "*") |
| forward_variables_from(invoker, [ "python_package" ]) |
| module_as_package = _module_as_package |
| |
| deps = [] |
| foreach(dep, _deps) { |
| _base = get_label_info(dep, "label_no_toolchain") |
| deps += [ "$_base.python(" + get_label_info(dep, "toolchain") + ")" ] |
| } |
| |
| if (module_as_package == "") { |
| _python_prefix = "$base_out_dir/python/$_prefix" |
| } else { |
| _python_prefix = "$base_out_dir/python/$module_as_package" |
| } |
| |
| outputs = [] |
| foreach(name, _source_names) { |
| outputs += [ |
| "$_python_prefix/${name}_pb2.py", |
| "$_python_prefix/${name}_pb2.pyi", |
| ] |
| } |
| } |
| |
| # All supported pw_protobuf generators. |
| _protobuf_generators = [ |
| "pwpb", |
| "nanopb", |
| "nanopb_rpc", |
| "raw_rpc", |
| "go", |
| "python", |
| ] |
| |
| # If the label matches the directory name, alias the subtargets to the |
| # directory (e.g. //foo:nanopb is an alias for //foo:foo.nanopb). |
| if (get_label_info(":$target_name", "name") == |
| get_path_info(get_label_info(":$target_name", "dir"), "name")) { |
| foreach(_generator, _protobuf_generators - [ "python" ]) { |
| group(_generator) { |
| public_deps = [ ":${invoker.target_name}.$_generator" ] |
| } |
| } |
| |
| pw_python_group("python") { |
| python_deps = [ ":${invoker.target_name}.python" ] |
| } |
| } |
| |
| # If the user attempts to use the target directly instead of one of the |
| # generator targets, run a script which prints a nice error message. |
| pw_python_action(target_name) { |
| script = string_join("/", |
| [ |
| dir_pw_protobuf_compiler, |
| "py", |
| "pw_protobuf_compiler", |
| "proto_target_invalid.py", |
| ]) |
| args = [ |
| "--target", |
| target_name, |
| "--dir", |
| get_path_info(".", "abspath"), |
| "--root", |
| "//", |
| ] + _protobuf_generators |
| stamp = true |
| } |
| } |