xref: /aosp_15_r20/external/grpc-grpc/src/csharp/Grpc.Tools/build/_protobuf/Google.Protobuf.Tools.targets (revision cc02d7e222339f7a4f6ba5f422e6413f4bd931f2)
1<?xml version="1.0"?>
2<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
3  <PropertyGroup>
4    <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
5    <!-- We allow a non-C# generator be set by the user, but skip adding outputs to Compile in this case. -->
6    <Protobuf_Generator Condition=" '$(Protobuf_Generator)' == '' and '$(Language)' == 'C#' ">CSharp</Protobuf_Generator>
7    <!-- Configuration is passing the smoke test. -->
8    <Protobuf_ProjectSupported Condition=" '$(Protobuf_Generator)' != '' ">true</Protobuf_ProjectSupported>
9    <!-- Allow assembly file to be specified externally for testing by setting property _Protobuf_MsBuildAssembly -->
10    <_Protobuf_MsBuildAssembly Condition=" '$(_Protobuf_MsBuildAssembly)' == '' and '$(MSBuildRuntimeType)' == 'Core' ">netstandard1.3\Protobuf.MSBuild.dll</_Protobuf_MsBuildAssembly>
11    <_Protobuf_MsBuildAssembly Condition=" '$(_Protobuf_MsBuildAssembly)' == '' and '$(MSBuildRuntimeType)' != 'Core' ">net45\Protobuf.MSBuild.dll</_Protobuf_MsBuildAssembly>
12  </PropertyGroup>
13
14  <UsingTask AssemblyFile="$(_Protobuf_MsBuildAssembly)" TaskName="Grpc.Tools.ProtoToolsPlatform" />
15  <UsingTask AssemblyFile="$(_Protobuf_MsBuildAssembly)" TaskName="Grpc.Tools.ProtoCompilerOutputs" />
16  <UsingTask AssemblyFile="$(_Protobuf_MsBuildAssembly)" TaskName="Grpc.Tools.ProtoReadDependencies" />
17  <UsingTask AssemblyFile="$(_Protobuf_MsBuildAssembly)" TaskName="Grpc.Tools.ProtoCompile" />
18
19  <PropertyGroup Condition=" '$(Protobuf_ProjectSupported)' == 'true' ">
20    <Protobuf_IntermediatePath Condition=" '$(Protobuf_IntermediatePath)' == '' ">$(IntermediateOutputPath)</Protobuf_IntermediatePath>
21    <Protobuf_OutputPath Condition=" '$(Protobuf_OutputPath)' == '' ">$(Protobuf_IntermediatePath)</Protobuf_OutputPath>
22    <Protobuf_DepFilesPath Condition=" '$(Protobuf_DepFilesPath)' == '' ">$(Protobuf_IntermediatePath)</Protobuf_DepFilesPath>
23  </PropertyGroup>
24
25  <ItemDefinitionGroup Condition=" '$(Protobuf_ProjectSupported)' == 'true' and '$(Language)' == 'C#' ">
26    <Protobuf>
27      <Access Condition="'%(Protobuf.Access)' == '' ">Public</Access>
28      <ProtoCompile Condition="'%(Protobuf.ProtoCompile)' == '' ">True</ProtoCompile>
29      <ProtoRoot Condition="'%(Protobuf.ProtoRoot)' == '' " />
30      <CompileOutputs Condition="'%(Protobuf.CompileOutputs)' == ''">True</CompileOutputs>
31      <OutputDir Condition="'%(Protobuf.OutputDir)' == '' ">$(Protobuf_OutputPath)</OutputDir>
32      <Generator Condition="'%(Protobuf.Generator)' == '' and '$(DisableProtobufDesignTimeBuild)' != 'true' " >MSBuild:Compile</Generator>
33    </Protobuf>
34  </ItemDefinitionGroup>
35
36  <ItemGroup Condition=" '$(Protobuf_ProjectSupported)' == 'true' and '$(Language)' == 'C#' ">
37    <PropertyPageSchema Include="$(MSBuildThisFileDirectory)Protobuf.CSharp.xml">
38      <Context>File;BrowseObject</Context>
39    </PropertyPageSchema>
40    <AvailableItemName Include="Protobuf" />
41  </ItemGroup>
42
43  <PropertyGroup>
44    <!-- NET SDK: by default, do not include proto files in the directory.
45         Current Microsoft's recommendation is against globbing:
46         https://docs.microsoft.com/en-us/dotnet/core/tools/csproj#recommendation -->
47    <EnableDefaultProtobufItems Condition=" '$(EnableDefaultProtobufItems)' == '' ">false</EnableDefaultProtobufItems>
48  </PropertyGroup>
49
50  <!-- Check configuration sanity before build. -->
51  <Target Name="_Protobuf_SanityCheck" BeforeTargets="PrepareForBuild">
52    <Error
53      Condition=" '$(Protobuf_ProjectSupported)' != 'true' "
54      Text="Google.Protobuf.Tools proto compilation is only supported by default in a C# project (extension .csproj)" />
55  </Target>
56
57  <!--================================================================================
58                                     Tool path resolution
59   =================================================================================-->
60
61  <!-- Extension point for plugin packages: use Protobuf_ToolsOs and Protobuf_ToolsCpu
62       to resolve executable. Either or both may be blank, however, if resolution
63       fails; do check them before using. -->
64  <Target Name="Protobuf_ResolvePlatform">
65    <ProtoToolsPlatform>
66      <Output TaskParameter="Os" PropertyName="_Protobuf_ToolsOs"/>
67      <Output TaskParameter="Cpu" PropertyName="_Protobuf_ToolsCpu"/>
68    </ProtoToolsPlatform>
69
70    <PropertyGroup>
71      <!-- First try environment variable. -->
72      <Protobuf_ToolsOs Condition=" '$(Protobuf_ToolsOs)' == '' ">$(PROTOBUF_TOOLS_OS)</Protobuf_ToolsOs>
73      <Protobuf_ToolsCpu Condition=" '$(Protobuf_ToolsCpu)' == '' ">$(PROTOBUF_TOOLS_CPU)</Protobuf_ToolsCpu>
74      <Protobuf_ProtocFullPath Condition=" '$(Protobuf_ProtocFullPath)' == '' ">$(PROTOBUF_PROTOC)</Protobuf_ProtocFullPath>
75
76      <!-- Next try OS and CPU resolved by ProtoToolsPlatform. -->
77      <Protobuf_ToolsOs Condition=" '$(Protobuf_ToolsOs)' == '' ">$(_Protobuf_ToolsOs)</Protobuf_ToolsOs>
78      <Protobuf_ToolsCpu Condition=" '$(Protobuf_ToolsCpu)' == '' ">$(_Protobuf_ToolsCpu)</Protobuf_ToolsCpu>
79      <Protobuf_ProtocFullPath Condition=" '$(Protobuf_ProtocFullPath)' == '' and '$(Protobuf_ToolsOs)' == 'windows' "
80           >$(Protobuf_PackagedToolsPath)\$(Protobuf_ToolsOs)_$(Protobuf_ToolsCpu)\protoc.exe</Protobuf_ProtocFullPath>
81      <Protobuf_ProtocFullPath Condition=" '$(Protobuf_ProtocFullPath)' == '' "
82           >$(Protobuf_PackagedToolsPath)/$(Protobuf_ToolsOs)_$(Protobuf_ToolsCpu)/protoc</Protobuf_ProtocFullPath>
83    </PropertyGroup>
84
85    <Error Condition=" '$(DisableProtobufDesignTimeBuild)' != 'true' and '$(PROTOBUF_PROTOC)' == ''
86                        and ( '$(Protobuf_ToolsOs)' == '' or '$(Protobuf_ToolsCpu)' == '' ) "
87      Text="Google.Protobuf.Tools cannot determine host OS and CPU.&#10;Use environment variables PROTOBUF_TOOLS_OS={linux|macosx|windows} and PROTOBUF_TOOLS_CPU={x86|x64|arm64} to try the closest match to your system.&#10;You may also set PROTOBUF_PROTOC to specify full path to the host-provided compiler (v3.5+ is required)." />
88  </Target>
89
90  <!--================================================================================
91                                     Proto compilation
92   =================================================================================-->
93
94  <!-- Extension points. -->
95  <Target Name="Protobuf_BeforeCompile" />
96  <Target Name="Protobuf_AfterCompile" />
97
98  <!-- Main compile sequence. Certain steps are gated by the value $(DisableProtobufDesignTimeBuild),
99       so the sequence is good for either design time or build time. -->
100  <Target Name="Protobuf_Compile"
101          Condition=" '@(Protobuf)' != '' "
102          DependsOnTargets=" Protobuf_BeforeCompile;
103                             Protobuf_ResolvePlatform;
104                             _Protobuf_SelectFiles;
105                             Protobuf_PrepareCompile;
106                             _Protobuf_AugmentLanguageCompile;
107                             _Protobuf_CoreCompile;
108                             Protobuf_ReconcileOutputs;
109                             Protobuf_AfterCompile" />
110
111  <!-- Do proto compilation by default in a C# project. In other types, the user invoke
112       Protobuf_Compile directly where required. -->
113  <Target Name="_Protobuf_Compile_BeforeCsCompile"
114          BeforeTargets="BeforeCompile"
115          DependsOnTargets="Protobuf_Compile"
116          Condition=" '$(Language)' == 'C#' " />
117
118  <Target Name="_Protobuf_SetProtoRoot">
119    <!-- Guess .proto root for the files. Whenever the root is set for a file explicitly,
120         leave it as is. Otherwise, for files under the project directory, set the root
121         to "." for the project's directory, as it is the current when compiling; for the
122         files outside of project directory, use each .proto file's directory as the root. -->
123    <FindUnderPath Path="$(MSBuildProjectDirectory)"
124                   Files="@(Protobuf->WithMetadataValue('ProtoRoot',''))">
125      <Output TaskParameter="InPath" ItemName="_Protobuf_NoRootInProject"/>
126      <Output TaskParameter="OutOfPath" ItemName="_Protobuf_NoRootElsewhere"/>
127    </FindUnderPath>
128    <ItemGroup>
129      <!-- Files with explicit metadata. -->
130      <Protobuf_Rooted Include="@(Protobuf->HasMetadata('ProtoRoot'))" />
131      <!-- In-project files will have ProtoRoot='.'. -->
132      <Protobuf_Rooted Include="@(_Protobuf_NoRootInProject)">
133        <ProtoRoot>.</ProtoRoot>
134      </Protobuf_Rooted>
135      <!-- Out-of-project files will have respective ProtoRoot='%(RelativeDir)'. -->
136      <Protobuf_Rooted Include="@(_Protobuf_NoRootElsewhere)">
137        <ProtoRoot>%(RelativeDir)</ProtoRoot>
138        <ProtoRoot Condition=" '$(Protobuf_ProtoRoot)' != '' ">$(Protobuf_ProtoRoot)</ProtoRoot>
139      </Protobuf_Rooted>
140    </ItemGroup>
141  </Target>
142
143  <!-- Select files that should be compiled. -->
144  <Target Name="_Protobuf_SelectFiles"
145          DependsOnTargets=" _Protobuf_SetProtoRoot">
146    <ItemGroup>
147      <!-- Files with explicit metadata. -->
148      <Protobuf_Compile Include="@(Protobuf_Rooted)" />
149      <!-- Remove files not for compile. -->
150      <Protobuf_Compile Remove="@(Protobuf_Compile)" Condition=" '%(ProtoCompile)' != 'true' " />
151      <!-- Ensure invariant Source=%(Identity). -->
152      <!-- Need to Unescape otherwise errors with characters such as '@' in paths
153          See https://github.com/grpc/grpc/issues/30746
154          and https://github.com/dotnet/msbuild/issues/8104
155      -->
156      <Protobuf_Compile>
157        <Source>$([MSBuild]::Unescape(%(Identity)))</Source>
158      </Protobuf_Compile>
159    </ItemGroup>
160  </Target>
161
162  <!-- Extension point for non-C# project. Protobuf_Generator should be supported
163       by the ProtoCompile task, but we skip inferring expected outputs. All proto
164       files will be always recompiled with a warning, unless you add expectations
165       to the Protobuf_ExpectedOutputs collection.
166
167       All inferred ExpectedOutputs will be added to code compile (C#) in a C# project
168       by default. This is controlled per-proto by the CompileOutputs metadata. -->
169  <Target Name="Protobuf_PrepareCompile" Condition=" '@(Protobuf_Compile)' != '' ">
170    <!-- Predict expected names. -->
171    <ProtoCompilerOutputs Condition=" '$(Language)' == 'C#' "
172                          Protobuf="@(Protobuf_Compile)"
173                          Generator="$(Protobuf_Generator)">
174      <Output TaskParameter="PossibleOutputs" ItemName="Protobuf_ExpectedOutputs" />
175      <Output TaskParameter="PatchedProtobuf" ItemName="_PatchedProtobuf" />
176    </ProtoCompilerOutputs>
177    <!-- Replace Protobuf_Compile with PatchedProtobuf. -->
178    <ItemGroup>
179       <Protobuf_Compile Remove="@(_PatchedProtobuf)"/>
180       <Protobuf_Compile Include ="@(_PatchedProtobuf)"/>
181    </ItemGroup>
182    <!-- Read any dependency files from previous compiles. -->
183    <ProtoReadDependencies Condition=" '$(Protobuf_DepFilesPath)' != '' and '$(DisableProtobufDesignTimeBuild)' != 'true' "
184                           Protobuf="@(Protobuf_Compile)"
185                           ProtoDepDir="$(Protobuf_DepFilesPath)" >
186      <Output TaskParameter="Dependencies" ItemName="Protobuf_Dependencies" />
187    </ProtoReadDependencies>
188  </Target>
189
190  <!-- Add all expected outputs, and only these, to language compile.  -->
191  <Target Name="_Protobuf_AugmentLanguageCompile"
192          DependsOnTargets="_Protobuf_EnforceInvariants"
193          Condition=" '$(Language)' == 'C#' ">
194    <ItemGroup>
195      <_Protobuf_CodeCompile Include="@(Protobuf_ExpectedOutputs->Distinct())"
196         Condition=" '%(Source)' != '' and '@(Protobuf_Compile->WithMetadataValue('CompileOutputs', 'true'))' != '' " />
197      <!-- Adding Distinct() is just a precaution as the CSC compiler complains if there are
198           duplicate source files
199      -->
200      <Compile Include="@(_Protobuf_CodeCompile->Distinct())" />
201    </ItemGroup>
202  </Target>
203
204  <!-- These invariants must be kept for compile up-to-date check to work. -->
205  <Target Name="_Protobuf_EnforceInvariants">
206    <!-- Enforce Source=Identity on proto files. The 'Source' metadata is used as a common
207         key to match dependencies/expected outputs in the lists for up-to-date checks. -->
208    <!--  Need to Unescape otherwise errors with characters such as '@' in paths
209          See https://github.com/grpc/grpc/issues/30746
210          and https://github.com/dotnet/msbuild/issues/8104
211      -->
212    <ItemGroup>
213      <Protobuf_Compile>
214        <Source>$([MSBuild]::Unescape(%(Identity)))</Source>
215      </Protobuf_Compile>
216    </ItemGroup>
217
218    <!-- Remove possible output and dependency declarations that have no Source set, or those
219         not matching any proto marked for compilation. -->
220    <ItemGroup>
221      <Protobuf_ExpectedOutputs Remove="@(Protobuf_ExpectedOutputs)" Condition=" '%(Protobuf_ExpectedOutputs.Source)' == '' " />
222      <Protobuf_ExpectedOutputs Remove="@(Protobuf_ExpectedOutputs)" Condition=" '%(Source)' != '' and '@(Protobuf_Compile)' == '' " />
223      <Protobuf_Dependencies Remove="@(Protobuf_Dependencies)" Condition=" '%(Protobuf_Dependencies.Source)' == '' " />
224      <Protobuf_Dependencies Remove="@(Protobuf_Dependencies)" Condition=" '%(Source)' != '' and '@(Protobuf_Compile)' == '' " />
225    </ItemGroup>
226  </Target>
227
228  <!-- Gather files with and without known outputs, separately. -->
229  <Target Name="_Protobuf_GatherStaleFiles"
230          Condition=" '@(Protobuf_Compile)' != '' "
231          DependsOnTargets="_Protobuf_EnforceInvariants; _Protobuf_GatherStaleSimple; _Protobuf_GatherStaleBatched">
232    <ItemGroup>
233      <!-- Drop outputs from MSBuild inference (they won't have the '_Exec' metadata).  -->
234      <_Protobuf_OutOfDateProto Remove="@(_Protobuf_OutOfDateProto->WithMetadataValue('_Exec',''))" />
235    </ItemGroup>
236  </Target>
237
238  <Target Name="_Protobuf_GatherStaleSimple">
239    <!-- Simple selection: always compile files that have no declared outputs (but warn below). -->
240    <ItemGroup>
241      <_Protobuf_OutOfDateProto Include="@(Protobuf_Compile)"
242                                Condition = " '%(Source)' != '' and '@(Protobuf_ExpectedOutputs)' == '' ">
243        <_Exec>true</_Exec>
244      </_Protobuf_OutOfDateProto>
245    </ItemGroup>
246
247    <!-- You are seeing this warning because there was no Protobuf_ExpectedOutputs items with
248         their Source attribute pointing to the proto files listed in the warning. Such files
249         will be recompiled on every build, as there is nothing to run up-to-date check against.
250         Set Protobuf_NoOrphanWarning to 'true' to suppress if this is what you want. -->
251    <Warning Condition=" '@(_Protobuf_OutOfDateProto)' != '' and '$(Protobuf_NoOrphanWarning)' != 'true' "
252             Text="The following files have no known outputs, and will be always recompiled as if out-of-date:&#10;@(_Protobuf_Orphans->'&#10;    %(Identity)', '')" />
253  </Target>
254
255  <Target Name="_Protobuf_GatherStaleBatched"
256          Inputs="@(Protobuf_Compile);%(Source);@(Protobuf_Dependencies);$(MSBuildAllProjects)"
257          Outputs="@(Protobuf_ExpectedOutputs)" >
258    <!-- The '_Exec' metadatum is set to distinguish really executed items from those MSBuild so
259         "helpfully" infers in a bucketed task. For the same reason, cannot use the intrinsic
260         ItemGroup task here. -->
261    <CreateItem Include="@(Protobuf_Compile)" AdditionalMetadata="_Exec=true">
262      <Output TaskParameter="Include" ItemName="_Protobuf_OutOfDateProto"/>
263    </CreateItem>
264  </Target>
265
266  <!-- Extension point: Plugins massage metadata into recognized metadata
267       values passed to the ProtoCompile task. -->
268  <Target Name="Protobuf_PrepareCompileOptions" Condition=" '@(Protobuf_Compile)' != '' ">
269    <ItemGroup>
270      <Protobuf_Compile>
271        <_OutputOptions Condition=" '%(Protobuf_Compile.Access)' == 'Internal' ">%(Protobuf_Compile._OutputOptions);internal_access</_OutputOptions>
272      </Protobuf_Compile>
273    </ItemGroup>
274  </Target>
275
276  <Target Name="_Protobuf_CoreCompile"
277          Condition=" '$(DisableProtobufDesignTimeBuild)' != 'true' "
278          DependsOnTargets="Protobuf_PrepareCompileOptions;_Protobuf_GatherStaleFiles">
279    <!-- Ensure output directories. -->
280    <MakeDir Directories="%(_Protobuf_OutOfDateProto.OutputDir)" />
281    <MakeDir Directories="%(_Protobuf_OutOfDateProto.GrpcOutputDir)" />
282    <MakeDir Directories="$(Protobuf_DepFilesPath)" />
283
284    <!-- Force output to the current directory if the user has set it to empty. -->
285    <ItemGroup>
286      <_Protobuf_OutOfDateProto>
287        <OutputDir Condition=" '%(OutputDir)' == '' ">.</OutputDir>
288      </_Protobuf_OutOfDateProto>
289    </ItemGroup>
290
291    <ProtoCompile Condition=" '@(_Protobuf_OutOfDateProto)' != '' "
292      ToolExe="$(Protobuf_ProtocFullPath)"
293      Generator="$(Protobuf_Generator)"
294      Protobuf="%(_Protobuf_OutOfDateProto.Source)"
295      ProtoPath="%(_Protobuf_OutOfDateProto.AdditionalImportDirs);$(Protobuf_StandardImportsPath);%(_Protobuf_OutOfDateProto.ProtoRoot)"
296      ProtoDepDir="$(Protobuf_DepFilesPath)"
297      OutputDir="%(_Protobuf_OutOfDateProto.OutputDir)"
298      OutputOptions="%(_Protobuf_OutOfDateProto.OutputOptions);%(_Protobuf_OutOfDateProto._OutputOptions)"
299      GrpcPluginExe="%(_Protobuf_OutOfDateProto.GrpcPluginExe)"
300      GrpcOutputDir="%(_Protobuf_OutOfDateProto.GrpcOutputDir)"
301      GrpcOutputOptions="%(_Protobuf_OutOfDateProto.GrpcOutputOptions);%(_Protobuf_OutOfDateProto._GrpcOutputOptions)"
302      AdditionalProtocArguments="%(_Protobuf_OutOfDateProto.AdditionalProtocArguments)"
303    >
304      <Output TaskParameter="GeneratedFiles" ItemName="_Protobuf_GeneratedFiles"/>
305    </ProtoCompile>
306
307    <!-- Compute files expected but not in fact produced by protoc. -->
308    <ItemGroup Condition=" '@(_Protobuf_OutOfDateProto)' != '' ">
309      <Protobuf_ExpectedNotGenerated Include="@(Protobuf_ExpectedOutputs)"
310                                     Condition=" '%(Source)' != '' and '@(_Protobuf_OutOfDateProto)' != '' " />
311      <Protobuf_ExpectedNotGenerated Remove="@(_Protobuf_GeneratedFiles)" />
312    </ItemGroup>
313  </Target>
314
315  <!-- Extension point. Plugins and/or unsupported projects may take special care of the
316       Protobuf_ExpectedNotGenerated list in BeforeTargets. We just silently create the
317       missing outputs so that out-of-date checks work (we do not add them to language
318       compile though). You can empty this collection in your Before targets to do nothing.
319       The target is not executed if the proto compiler is not executed. -->
320  <Target Name="Protobuf_ReconcileOutputs"
321          Condition=" '$(DisableProtobufDesignTimeBuild)' != 'true' ">
322    <!-- Warn about unexpected/missing files outside object file directory only.
323         This should have happened because build was incorrectly customized. -->
324    <FindUnderPath Path="$(BaseIntermediateOutputPath)" Files="@(Protobuf_ExpectedNotGenerated)">
325      <Output TaskParameter="InPath" ItemName="_Protobuf_ExpectedNotGeneratedInTemp"/>
326      <Output TaskParameter="OutOfPath" ItemName="_Protobuf_ExpectedNotGeneratedElsewhere"/>
327    </FindUnderPath>
328
329    <!-- Prevent unnecessary recompilation by silently creating empty files. This probably
330         has happened because a proto file with an rpc service was processed by the gRPC
331         plugin, and the user did not set GrpcOutput to None. When we treat outputs as
332         transient, we can do it permissively. -->
333    <Touch Files="@(_Protobuf_ExpectedNotGeneratedInTemp)" AlwaysCreate="true" />
334
335    <!-- Also create empty files outside of the intermediate directory, if the user wants so. -->
336    <Touch Files="@(_Protobuf_ExpectedNotGeneratedElsewhere)" AlwaysCreate="true"
337           Condition=" '$(Protobuf_TouchMissingExpected)' == 'true' "/>
338
339    <!-- You are seeing this warning because there were some Protobuf_ExpectedOutputs items
340         (outside of the transient directory under obj/) not in fact produced by protoc. -->
341    <Warning Condition=" '@(_Protobuf_ExpectedNotGeneratedElsewhere)' != '' and $(Protobuf_NoWarnMissingExpected) != 'true' "
342             Text="Some expected protoc outputs were not generated.&#10;@(_Protobuf_ExpectedNotGeneratedElsewhere->'&#10;    %(Identity)', '')" />
343  </Target>
344
345  <!--================================================================================
346                                   Proto cleanup
347   =================================================================================-->
348
349  <!-- We fully support cleanup only in a C# project. If extending the build for other
350       generators/plugins, then mostly roll your own. -->
351
352  <!-- Extension points. -->
353  <Target Name="Protobuf_BeforeClean" />
354  <Target Name="Protobuf_AfterClean" />
355
356  <!-- Main cleanup sequence. -->
357  <Target Name="Protobuf_Clean"
358          Condition=" '@(Protobuf)' != '' "
359          DependsOnTargets=" Protobuf_BeforeClean;
360                             _Protobuf_SetProtoRoot;
361                             Protobuf_PrepareClean;
362                             _Protobuf_CoreClean;
363                             Protobuf_AfterClean" />
364
365  <!-- Do proto cleanup by default in a C# project. In other types, the user should
366       invoke Protobuf_Clean directly if required. -->
367  <Target Name="_Protobuf_Clean_AfterCsClean"
368          AfterTargets="CoreClean"
369          DependsOnTargets="Protobuf_Clean"
370          Condition=" '$(Protobuf_ProjectSupported)' == 'true' and '$(Language)' == 'C#' " />
371
372  <!-- Extension point for non-C# project. ProtoCompilerOutputs is not invoked for
373       non-C# projects, since inferring protoc outputs is required, so this is a
374       no-op in other project types. In your extension target populate the
375       Protobuf_ExpectedOutputs with all possible output. An option is to include
376       all existing outputs using Include with a wildcard, if you know where to look.
377
378       Note this is like Protobuf_PrepareCompile, but uses @(Protobuf_Rooted) regardless
379       of the Compile metadata, to remove all possible outputs. Plugins should err
380       on the side of overextending the Protobuf_ExpectedOutputs here.
381
382       All ExpectedOutputs will be removed. -->
383  <Target Name="Protobuf_PrepareClean" Condition=" '@(Protobuf_Rooted)' != '' ">
384    <!-- Predict expected names. -->
385    <ProtoCompilerOutputs Condition=" '$(Language)' == 'C#' "
386                          Protobuf="@(Protobuf_Rooted)"
387                          Generator="$(Protobuf_Generator)">
388      <Output TaskParameter="PossibleOutputs" ItemName="Protobuf_ExpectedOutputs" />
389    </ProtoCompilerOutputs>
390  </Target>
391
392  <Target Name="_Protobuf_CoreClean">
393    <ItemGroup>
394      <_Protobuf_Protodep Include="$(Protobuf_DepFilesPath)*.protodep" />
395    </ItemGroup>
396    <Delete Files="@(Protobuf_ExpectedOutputs);@(_Protobuf_Protodep)" TreatErrorsAsWarnings="true" />
397  </Target>
398
399  <!--================================================================================
400                                  Design-time support
401   =================================================================================-->
402
403  <!-- Add all .proto files to the SourceFilesProjectOutputGroupOutput, so that:
404       * Visual Studio triggers a build when any of them changed;
405       * The Pack target includes .proto files into the source package.  -->
406  <Target Name="_Protobuf_SourceFilesProjectOutputGroup"
407          BeforeTargets="SourceFilesProjectOutputGroup"
408          Condition=" '@(Protobuf)' != '' " >
409    <ItemGroup>
410      <SourceFilesProjectOutputGroupOutput Include="@(Protobuf->'%(FullPath)')" />
411    </ItemGroup>
412  </Target>
413</Project>
414