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1 # Copyright 2014 The Chromium Authors. All rights reserved. | 1 # Copyright 2014 The Chromium Authors. All rights reserved. |
2 # Use of this source code is governed by a BSD-style license that can be | 2 # Use of this source code is governed by a BSD-style license that can be |
3 # found in the LICENSE file. | 3 # found in the LICENSE file. |
4 | 4 |
5 # Compile a protocol buffer. | 5 # Compile a protocol buffer. |
6 # | 6 # |
7 # Protobuf parameters: | 7 # Protobuf parameters: |
8 # | 8 # |
9 # proto_in_dir (optional) | 9 # proto_in_dir (optional) |
10 # Specifies the path relative to the current BUILD.gn file where | 10 # Specifies the path relative to the current BUILD.gn file where |
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36 # component_build_force_source_set = true. | 36 # component_build_force_source_set = true. |
37 # | 37 # |
38 # cc_include (optional) | 38 # cc_include (optional) |
39 # String listing an extra include that should be passed. | 39 # String listing an extra include that should be passed. |
40 # Example: cc_include = "foo/bar.h" | 40 # Example: cc_include = "foo/bar.h" |
41 # | 41 # |
42 # generator_plugin_label (optional) | 42 # generator_plugin_label (optional) |
43 # GN label for plugin executable which generates custom cc stubs. | 43 # GN label for plugin executable which generates custom cc stubs. |
44 # Don't specify a toolchain, host toolchain is assumed. | 44 # Don't specify a toolchain, host toolchain is assumed. |
45 # | 45 # |
46 # generator_plugin_suffix (required if |generator_plugin_label| set) | 46 # generator_plugin_script (optional) |
47 # Suffix (before extension) for generated .cc and .h files. | 47 # Path to plugin script. Mutually exclusive with |generator_plugin_label|. |
| 48 # |
| 49 # generator_plugin_script_deps (optional) |
| 50 # List of additional files required for generator plugin script. |
| 51 # |
| 52 # generator_plugin_suffix[es] (required if using a plugin) |
| 53 # Suffix (before extension) for generated .cc and .h files |
| 54 # or list of suffixes for all files (with extensions). |
48 # | 55 # |
49 # generator_plugin_options (optional) | 56 # generator_plugin_options (optional) |
50 # Extra flags passed to the plugin. See cc_generator_options. | 57 # Extra flags passed to the plugin. See cc_generator_options. |
51 # | 58 # |
52 # deps (optional) | 59 # deps (optional) |
53 # Additional dependencies. | 60 # Additional dependencies. |
54 # | 61 # |
55 # Parameters for compiling the generated code: | 62 # Parameters for compiling the generated code: |
56 # | 63 # |
57 # component_build_force_source_set (Default=false) | 64 # component_build_force_source_set (Default=false) |
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92 generate_cc = true | 99 generate_cc = true |
93 } | 100 } |
94 | 101 |
95 if (defined(invoker.generate_python)) { | 102 if (defined(invoker.generate_python)) { |
96 generate_python = invoker.generate_python | 103 generate_python = invoker.generate_python |
97 } else { | 104 } else { |
98 generate_python = true | 105 generate_python = true |
99 } | 106 } |
100 | 107 |
101 if (defined(invoker.generator_plugin_label)) { | 108 if (defined(invoker.generator_plugin_label)) { |
102 generator_plugin_label = invoker.generator_plugin_label | |
103 generator_plugin_suffix = invoker.generator_plugin_suffix | |
104 generate_with_plugin = true | |
105 | |
106 # Straightforward way to get the name of executable doesn't work because | 109 # Straightforward way to get the name of executable doesn't work because |
107 # |root_out_dir| and |root_build_dir| may differ in cross-compilation and | 110 # |root_out_dir| and |root_build_dir| may differ in cross-compilation and |
108 # also Windows executables have .exe at the end. | 111 # also Windows executables have .exe at the end. |
109 | 112 |
110 plugin_host_label = generator_plugin_label + "($host_toolchain)" | 113 plugin_host_label = invoker.generator_plugin_label + "($host_toolchain)" |
111 plugin_path = get_label_info(plugin_host_label, "root_out_dir") + "/" + | 114 plugin_path = get_label_info(plugin_host_label, "root_out_dir") + "/" + |
112 get_label_info(plugin_host_label, "name") | 115 get_label_info(plugin_host_label, "name") |
113 if (host_os == "win") { | 116 if (host_os == "win") { |
114 plugin_path += ".exe" | 117 plugin_path += ".exe" |
115 } | 118 } |
116 plugin_path = rebase_path(plugin_path, root_build_dir) | 119 generate_with_plugin = true |
| 120 } else if (defined(invoker.generator_plugin_script)) { |
| 121 plugin_path = invoker.generator_plugin_script |
| 122 generate_with_plugin = true |
117 } else { | 123 } else { |
118 generate_with_plugin = false | 124 generate_with_plugin = false |
119 } | 125 } |
120 | 126 |
121 # TODO(kraynov): Remove (in the next CL) merge conflict temporary workaround. | 127 if (generate_with_plugin) { |
122 # This option along with |inputs| would be replaced by the following pattern: | 128 if (defined(invoker.generator_plugin_suffix)) { |
123 # source_set("some_python_plugin") { | 129 generator_plugin_suffixes = [ |
124 # sources = [ | 130 "${invoker.generator_plugin_suffix}.h", |
125 # "bar.py", | 131 "${invoker.generator_plugin_suffix}.cc", |
126 # ... | 132 ] |
127 # ] | 133 } else { |
128 # } | 134 generator_plugin_suffixes = invoker.generator_plugin_suffixes |
129 # proto_library("some_proto_lib") { | 135 } |
130 # generator_plugin_label = ":some_python_plugin" | 136 plugin_path = rebase_path(plugin_path, root_build_dir) |
131 # generator_plugin_suffix = ".pb.foo" | |
132 # generator_plugin_script = "bar.py" | |
133 # } | |
134 if (defined(invoker.json_converter)) { | |
135 generator_plugin_suffix = "_json_converter" | |
136 plugin_path = rebase_path(invoker.json_converter) | |
137 invoker.generator_plugin_options = "output_dir=:" | |
138 generate_with_plugin = true | |
139 } | 137 } |
140 | 138 |
141 if (defined(invoker.proto_in_dir)) { | 139 if (defined(invoker.proto_in_dir)) { |
142 proto_in_dir = invoker.proto_in_dir | 140 proto_in_dir = invoker.proto_in_dir |
143 has_nested_dirs = false | 141 has_nested_dirs = false |
144 foreach(proto_source, proto_sources) { | 142 foreach(proto_source, proto_sources) { |
145 if (get_path_info(proto_source, "dir") != proto_in_dir) { | 143 if (get_path_info(proto_source, "dir") != proto_in_dir) { |
146 has_nested_dirs = true | 144 has_nested_dirs = true |
147 } | 145 } |
148 } | 146 } |
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194 if (generate_cc) { | 192 if (generate_cc) { |
195 protogens += [ | 193 protogens += [ |
196 "$cc_out_dir/$proto_path.pb.h", | 194 "$cc_out_dir/$proto_path.pb.h", |
197 "$cc_out_dir/$proto_path.pb.cc", | 195 "$cc_out_dir/$proto_path.pb.cc", |
198 ] | 196 ] |
199 } | 197 } |
200 if (generate_python) { | 198 if (generate_python) { |
201 protogens += [ "$py_out_dir/${proto_path}_pb2.py" ] | 199 protogens += [ "$py_out_dir/${proto_path}_pb2.py" ] |
202 } | 200 } |
203 if (generate_with_plugin) { | 201 if (generate_with_plugin) { |
204 # TODO(kraynov): Remove merge conflict temporary workaround. | 202 foreach(suffix, generator_plugin_suffixes) { |
205 if (defined(invoker.json_converter)) { | 203 protogens += [ "$cc_out_dir/${proto_path}${suffix}" ] |
206 protogens += [ "$cc_out_dir/${proto_path}$generator_plugin_suffix.h" ] | |
207 } else { | |
208 protogens += [ | |
209 "$cc_out_dir/${proto_path}$generator_plugin_suffix.h", | |
210 "$cc_out_dir/${proto_path}$generator_plugin_suffix.cc", | |
211 ] | |
212 } | 204 } |
213 } | 205 } |
214 } | 206 } |
215 | 207 |
216 action_name = "${target_name}_gen" | 208 action_name = "${target_name}_gen" |
217 source_set_name = target_name | 209 source_set_name = target_name |
218 | 210 |
219 # Generate protobuf stubs. | 211 # Generate protobuf stubs. |
220 action(action_name) { | 212 action(action_name) { |
221 visibility = [ ":$source_set_name" ] | 213 visibility = [ ":$source_set_name" ] |
222 script = "//tools/protoc_wrapper/protoc_wrapper.py" | 214 script = "//tools/protoc_wrapper/protoc_wrapper.py" |
223 sources = proto_sources | 215 sources = proto_sources |
224 outputs = get_path_info(protogens, "abspath") | 216 outputs = get_path_info(protogens, "abspath") |
225 args = protos | 217 args = protos |
226 | 218 |
227 if (defined(invoker.inputs)) { | 219 if (defined(invoker.generator_plugin_script)) { |
228 inputs = invoker.inputs | 220 inputs = [ |
| 221 invoker.generator_plugin_script, |
| 222 ] |
| 223 } |
| 224 if (defined(invoker.generator_plugin_script_deps)) { |
| 225 inputs += invoker.generator_plugin_script_deps |
229 } | 226 } |
230 | 227 |
231 protoc_label = "//third_party/protobuf:protoc($host_toolchain)" | 228 protoc_label = "//third_party/protobuf:protoc($host_toolchain)" |
232 protoc_out_dir = get_label_info(protoc_label, "root_out_dir") | 229 protoc_out_dir = get_label_info(protoc_label, "root_out_dir") |
233 args += [ | 230 args += [ |
234 # Wrapper should never pick a system protoc. | 231 # Wrapper should never pick a system protoc. |
235 # Path should be rebased because |root_build_dir| for current toolchain | 232 # Path should be rebased because |root_build_dir| for current toolchain |
236 # may be different from |root_out_dir| of protoc built on host toolchain. | 233 # may be different from |root_out_dir| of protoc built on host toolchain. |
237 "--protoc", | 234 "--protoc", |
238 "./" + rebase_path(protoc_out_dir, root_build_dir) + "/protoc", | 235 "./" + rebase_path(protoc_out_dir, root_build_dir) + "/protoc", |
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354 ":$action_name", | 351 ":$action_name", |
355 ] | 352 ] |
356 | 353 |
357 # This will link any libraries in the deps (the use of invoker.deps in the | 354 # This will link any libraries in the deps (the use of invoker.deps in the |
358 # action won't link it). | 355 # action won't link it). |
359 if (defined(invoker.deps)) { | 356 if (defined(invoker.deps)) { |
360 deps += invoker.deps | 357 deps += invoker.deps |
361 } | 358 } |
362 } | 359 } |
363 } | 360 } |
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