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libtorch-cpu.proj
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<Project>
<Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
<PropertyGroup>
<TargetFramework>netstandard2.0</TargetFramework>
<!-- see https://pytorch.org/get-started/locally/ for download links -->
<!-- For example Linux, LibTorch 1.9.0 https://download.pytorch.org/libtorch/cpu/libtorch-shared-with-deps-1.9.0%2Bcpu.zip -->
<!-- note the very odd characters %2Bcpu in the LibTorch download name. The % is encoded via %25 -->
<LocalBaseName>$(LibTorchCpuLocalBase)</LocalBaseName>
<ArchiveBaseName>$(LibTorchCpuArchiveBase)</ArchiveBaseName>
<ArchiveSource>$(LibTorchArchiveSource)</ArchiveSource>
<ArchiveExtension>.zip</ArchiveExtension>
<ArchiveUrl>https://download.pytorch.org/libtorch/cpu/$(ArchiveBaseName)$(ArchiveExtension)</ArchiveUrl>
<ArchiveExtension Condition="'$(ArchiveSource)' == 'conda'">.tar.bz2</ArchiveExtension>
<ArchiveUrl Condition="'$(ArchiveSource)' == 'conda'">
https://conda.anaconda.org/pytorch/$(CondaArchivePlatformName)/$(ArchiveBaseName)$(ArchiveExtension)
</ArchiveUrl>
<DownloadedArchiveFolder>$(MassiveDownloadRoot)$(MSBuildProjectName)\</DownloadedArchiveFolder>
<DownloadedArchiveFileName>$(ArchiveBaseName)$(ArchiveExtension)</DownloadedArchiveFileName>
<DownloadedArchive>$(DownloadedArchiveFolder)$(DownloadedArchiveFileName)</DownloadedArchive>
<ArchiveShaFile>$(IntermediateOutputPath)$(ArchiveBaseName)$(ArchiveExtension).sha</ArchiveShaFile>
<ExtractDirectory>$(IntermediateOutputPath)$(LocalBaseName)</ExtractDirectory>
<ExtractSemaphore>$(ExtractDirectory)\.extracted</ExtractSemaphore>
<LocalShaFile>$(MSBuildProjectDirectory)\$(ArchiveBaseName)$(ArchiveExtension).sha</LocalShaFile>
<LicenseUrl>https://raw.githubusercontent.com/pytorch/pytorch/master/LICENSE</LicenseUrl>
<DownloadedLicenseFolder>$(IntermediateOutputPath)</DownloadedLicenseFolder>
<DownloadedLicenseFileName>LICENSE-LIBTORCH</DownloadedLicenseFileName>
<DownloadedLicenseFile>$(DownloadedLicenseFolder)$(DownloadedLicenseFileName)</DownloadedLicenseFile>
<MainPackageFolder>$(PackagePreparationPath)$(MSBuildProjectName)-$(TargetRuntimeID)</MainPackageFolder>
<CopyToPackageSemaphore>$(MainPackageFolder)\.copied.SkipTests.$(SkipTests).IncludeLibTorchCpuPackages.$(IncludeLibTorchCpuPackages)</CopyToPackageSemaphore>
</PropertyGroup>
<ItemGroup Condition="'$(TargetOS)' == 'windows'">
<File Include="libtorch\lib\asmjit.dll" />
<File Include="libtorch\lib\c10.dll" />
<File Include="libtorch\lib\fbgemm.dll" />
<File Include="libtorch\lib\libiomp5md.dll" />
<File Include="libtorch\lib\libiompstubs5md.dll" />
<File Include="libtorch\lib\torch.dll" />
<File Include="libtorch\lib\torch_cpu.dll" />
<File Include="libtorch\lib\torch_global_deps.dll" />
<File Include="libtorch\lib\uv.dll" />
</ItemGroup>
<ItemGroup Condition="'$(NativeTargetArchitecture)' == 'arm64' and '$(TargetOS)' == 'mac'">
<File Include="libtorch\lib\libc10.dylib" />
<File Include="libtorch\lib\libshm.dylib" />
<!-- libomp.dylib is required for libtorch, but it is only bundled with libtorch 2.4.0 and above. -->
<File Include="libtorch\lib\libomp.dylib"/>
<File Include="libtorch\lib\libtorch.dylib" />
<File Include="libtorch\lib\libtorch_cpu.dylib" />
<File Include="libtorch\lib\libtorch_global_deps.dylib" />
<File Include="libtorch\lib\libtorch_python.dylib" />
</ItemGroup>
<ItemGroup Condition="'$(TargetOS)' == 'linux'">
<File Include= "libtorch\lib\libaoti_custom_ops.so" />
<File Include="libtorch\lib\libbackend_with_compiler.so"/>
<File Include="libtorch\lib\libc10.so"/>
<File Include="libtorch\lib\libgomp-98b21ff3.so.1"/>
<File Include="libtorch\lib\libjitbackend_test.so"/>
<File Include="libtorch\lib\libnnapi_backend.so"/>
<File Include="libtorch\lib\libshm.so"/>
<File Include="libtorch\lib\libtorch.so"/>
<File Include="libtorch\lib\libtorchbind_test.so"/>
<File Include="libtorch\lib\libtorch_global_deps.so"/>
<File Include="libtorch\lib\libtorch_python.so"/>
<File Include= "libtorch\lib\libtorch_cpu.so" />
</ItemGroup>
<Target Name="DownloadArchive" Inputs="..\..\..\LICENSE" Outputs="$(DownloadedArchive);$(DownloadedLicenseFile)">
<MakeDir Directories="$(DownloadedArchiveFolder)" />
<MakeDir Directories="$(DownloadedLicenseFolder)" />
<DownloadFile SourceUrl="$(ArchiveUrl)" DestinationFolder="$(DownloadedArchiveFolder)" DestinationFileName="$(DownloadedArchiveFileName)" Condition="!Exists('$(DownloadedArchive)')" />
<DownloadFile SourceUrl="$(LicenseUrl)" DestinationFolder="$(DownloadedLicenseFolder)" DestinationFileName="$(DownloadedLicenseFileName)" Condition="!Exists('$(DownloadedLicense)')" />
</Target>
<!-- Validate and extract Archive for Libtorch -->
<Target Name="ValidateAndExtractArchives" DependsOnTargets="DownloadArchive" Inputs="$(DownloadedArchive)" Outputs="$(ExtractSemaphore)">
<Message Importance="High" Text="GetFileHash $(DownloadedArchive)" />
<GetFileHash Files="$(DownloadedArchive)"> <Output TaskParameter="Hash" PropertyName="DownloadedArchiveHash" /> </GetFileHash>
<WriteLinesToFile File="$(ArchiveShaFile)" Lines="$(DownloadedArchiveHash)" Overwrite="true" />
<!-- If specified we'll update the checked in SHAs with the downloaded ones. -->
<Copy Condition="'$(UpdateSHA)' == 'true'" SourceFiles="$(ArchiveShaFile)" DestinationFiles="$(LocalShaFile)" />
<Error Condition="!Exists('$(LocalShaFile)')" Text="SHA file '$(LocalShaFile)' does not exist. Build with /p:UpdateSHA=true to save it." />
<!-- Read in the SHAs as metadata on the archive items -->
<ItemGroup>
<Archive>
<LocalSha>$([System.IO.File]::ReadAllText('$(LocalShaFile)'))</LocalSha>
<DownloadSha>$([System.IO.File]::ReadAllText('$(ArchiveShaFile)'))</DownloadSha>
</Archive>
</ItemGroup>
<!-- Validate that the downloaded SHAs match the expected checked in SHAs -->
<Error Condition="'%(Archive.LocalSha)' != '%(Archive.DownloadSha)'" Text="Downloaded file '$(DownloadedArchive)' has unexpected SHA.%0A expected: %(Archive.LocalSha)%0A actual: %(Archive.DownloadSha)%0ABuild with /p:UpdateSHA=true if you intentionally changed the URL and wish to update the SHAs, otherwise this could indicate an incomplete download or intercerpted URL and should be examined." />
<!-- The archives are valid, lets extract them, ensuring an empty directory -->
<RemoveDir Directories="$(ExtractDirectory)" />
<MakeDir Directories="$(ExtractDirectory)" />
<Message Importance="High" Text="Unzip $(DownloadedArchive) --> $(ExtractDirectory)" />
<Unzip Condition="'$(ArchiveExtension)' == '.zip'" SourceFiles="$(DownloadedArchive)" DestinationFolder="$(ExtractDirectory)" OverwriteReadOnlyFiles="true" />
<Exec Condition="'$(ArchiveExtension)' == '.tar.gz'"
WorkingDirectory="$(ExtractDirectory)"
Command="tar -xzmf "$([MSBuild]::MakeRelative('$(ExtractDirectory)', '$(DownloadedArchive)'))"" />
<Exec Condition="'$(ArchiveExtension)' == '.tar.bz2'"
WorkingDirectory="$(ExtractDirectory)"
Command="tar -xf "$([MSBuild]::MakeRelative('$(ExtractDirectory)', '$(DownloadedArchive)'))"" />
<WriteLinesToFile File="$(ExtractSemaphore)" Lines="done" Overwrite="true" />
<!-- delete the archive files when running on CI -->
<Message Importance="High" Text="Deleting '$(DownloadedArchive)' to free up space." Condition="'$(TF_BUILD)' != ''" />
<Delete Files="$(DownloadedArchive)" Condition="'$(TF_BUILD)' != ''" />
<!-- If we downloaded from conda instead of pytorch, we need to move it's torch folder to libtorch -->
<Exec Condition="'$(ArchiveSource)' == 'conda'"
WorkingDirectory="$(ExtractDirectory)"
Command="mv lib/python3.10/site-packages/torch libtorch" />
</Target>
<!-- Hack vast files into separate pieces so we can place them in separate nuget packages. -->
<UsingTask
TaskName="FileUnstitch"
TaskFactory="RoslynCodeTaskFactory"
AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.Core.dll" >
<ParameterGroup>
<SourceFile ParameterType="System.String" Required="true" />
<DestinationFolder ParameterType="System.String" Required="true" />
<Start ParameterType="System.Int64" Required="true" />
<Size ParameterType="System.Int64" Required="true" />
<Index ParameterType="System.String" Required="true" />
</ParameterGroup>
<Task>
<Using Namespace="System"/>
<Using Namespace="System.IO"/>
<Using Namespace="System.IO.MemoryMappedFiles"/>
<Code Type="Fragment" Language="cs">
<![CDATA[
{
string name = Path.GetFileName(SourceFile) + ((Start == 0) ? "" : ".fragment" + Index);
if (Size == -1)
Size = Int32.MaxValue;
var fi = new FileInfo(SourceFile);
Console.WriteLine($"Opening source {SourceFile} for fragment {Index}...");
using (var mmf = MemoryMappedFile.CreateFromFile(SourceFile))
{
long totSize = fi.Length;
if (Start != 0)
DestinationFolder = DestinationFolder.Replace("runtimes", "fragments");
Directory.CreateDirectory(DestinationFolder);
string outfile = Path.Combine(DestinationFolder, name);
Size = Math.Max(Math.Min(Size, totSize - Start), 0);
Console.WriteLine($"Reading fragment {Index} ({Start}..{Start + Size - 1}) from {SourceFile}...");
var outBytes = new byte[Size];
using (var accessor = mmf.CreateViewAccessor(Start, Size))
{
accessor.ReadArray<byte>(0, outBytes, 0, (int)Size);
}
Console.WriteLine($"Writing fragment to {outfile}...");
File.WriteAllBytes(outfile, outBytes);
}
}
if (Start == 0)
{
using (var sha256Hash = System.Security.Cryptography.SHA256.Create())
{
using (FileStream stream = File.OpenRead(SourceFile))
{
Console.WriteLine("Computing SHA...");
byte[] bytes = sha256Hash.ComputeHash(stream);
var builder = new System.Text.StringBuilder();
for (int i = 0; i < bytes.Length; i++)
{
builder.Append(bytes[i].ToString("x2"));
}
var sha = builder.ToString();
string shaFileName = Path.Combine(DestinationFolder, Path.GetFileName(SourceFile) + ".sha");
File.WriteAllText(shaFileName, sha);
Console.WriteLine($"Computed SHA {sha}...");
}
}
}
]]>
</Code>
</Task>
</UsingTask>
<Target Name="CopyFilesFromArchive" DependsOnTargets="ValidateAndExtractArchives" Inputs="$(ExtractSemaphore)" Outputs="$(CopyToPackageSemaphore)">
<Message Importance="High" Text="Copy @(File) -> $(MainPackageFolder)\runtimes\$(TargetRuntimeID)\native\" />
<!-- Copy to MainPackageFolder to use in libtorch-cpu package build -->
<Copy SourceFiles="$(ExtractDirectory)\%(File.Identity)" DestinationFolder="$(MainPackageFolder)\runtimes\$(TargetRuntimeID)\native\" SkipUnchangedFiles="true" Condition="'$(IncludeLibTorchCpuPackages)' == 'true' AND '%(File.PackageSuffix)' == ''"/>
<Copy SourceFiles="$(ExtractDirectory)\%(File.Identity)" DestinationFolder="$(MainPackageFolder)-%(File.PackageSuffix)\runtimes\$(TargetRuntimeID)\native\" SkipUnchangedFiles="true" Condition="'%(File.FileUnstitchStart)' == '' AND '%(File.PackageSuffix)' != ''"/>
<FileUnstitch SourceFile="$(ExtractDirectory)\%(File.Identity)" DestinationFolder="$(MainPackageFolder)-%(File.PackageSuffix)\runtimes\$(TargetRuntimeID)\native\" Start="%(File.FileUnstitchStart)" Size="%(File.FileUnstitchSize)" Index="%(File.FileUnstitchIndex)" Condition="'%(File.FileUnstitchStart)' != ''" />
<!-- Copy license to MainPackageFolder to use in libtorch-cpu packages build -->
<Copy SourceFiles="$(DownloadedLicenseFile)" DestinationFolder="$(MainPackageFolder)\" SkipUnchangedFiles="true" Condition="'$(IncludeLibTorchCpuPackages)' == 'true'" />
<!-- Copy to NativeOutputPath to use in tests (headers, lib etc.) -->
<MakeDir Directories="$(NativeOutputPath)" Condition="'$(SkipTests)' != 'true'" />
<Copy SourceFiles="$(ExtractDirectory)\%(File.Identity)" DestinationFolder="$(NativeOutputPath)" SkipUnchangedFiles="true" Condition="'$(SkipTests)' != 'true'" />
<WriteLinesToFile File="$(CopyToPackageSemaphore)" Lines="done" Overwrite="true" />
</Target>
<!-- Define Build to do the work of downloading and copying assets -->
<Target Name="Build" DependsOnTargets="CopyFilesFromArchive" />
<Target Name="Clean">
<RemoveDir Directories="$(IntermediateOutputPath)" />
</Target>
</Project>