Setting Up Environment To Debug In To onnxruntime.dll

1. Checkout a copy of the onnxruntime repository.

   git clone --recursive https://github.com/Microsoft/onnxruntime

2. Open an instance of VS2017 Developer Command Prompt.

3. Make sure that cmake>=3.13 and python>=3.6 is in the path.

4. If required, checkout a specific tagged version of onnxruntime.

   git checkout -b v1.0.0 v1.0.0

5. Build the core code base.

   cd onnxruntime
   build.bat --config Debug --build_shared_lib --build_csharp --skip_onnx_tests --skip-keras-test

6. Build the Microsoft.ML.OnnxRuntime nuget package.

   cd csharp
   msbuild OnnxRuntime.csharp.proj
   msbuild /t:CreatePackage OnnxRuntime.csharp.proj

   The nuget package should be located in [YOUR_ONNXRUNTIME_REPO_ROOT]\csharp\src\Microsoft.ML.OnnxRuntime\bin\Debug. Note, the version of the nuget package (ie. "1.0.0-dev-20200131-1133-b783805f").

7. Open [YOUR_MLNET_REPO_ROOT]\build\Dependencies.props and update the ONNX version to the version of the nuget package file created in the previous step.

   <MicrosoftMLOnnxRuntimePackageVersion>1.0.0-dev-20200131-1133-b783805f</MicrosoftMLOnnxRuntimePackageVersion>

8. Open [YOUR_MLNET_REPO_ROOT]\Directory.Build.props and add the new nuget source location to the RestoreSources section.

   <PropertyGroup>
       <RestoreSources>
             https://api.nuget.org/v3/index.json;
             https://dotnetfeed.blob.core.windows.net/dotnet-core/index.json;
             https://dotnet.myget.org/F/dotnet-core/api/v3/index.json;
             https://dotnet.myget.org/F/roslyn-analyzers/api/v3/index.json;
             https://pkgs.dev.azure.com/dnceng/public/_packaging/MachineLearning/nuget/v3/index.json;
             [YOUR_ONNXRUNTIME_REPO_ROOT]\csharp\src\Microsoft.ML.OnnxRuntime\bin\Debug;
       </RestoreSources>
   </PropertyGroup>

9. In a new cmd window, rebuild ML.Net and create new custom nuget packages.

   cd [YOUR_MLNET_REPO_ROOT]
   git clean -fxd
   build -debug
   build -debug -buildPackages

10. Update the NimbusML nuget.config file to include both the ML.Net and onnxruntime package source directories.

    <packageSources>
        <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
        <add key="local_mlnet" value="[YOUR_MLNET_REPO_ROOT]\bin\packages" />
        <add key="local_onnxruntime" value="[YOUR_ONNXRUNTIME_REPO_ROOT]\csharp\src\Microsoft.ML.OnnxRuntime\bin\Debug" />
        <!-- <add key="MlNet_Daily" value="https://dotnet.myget.org/F/dotnet-core/api/v3/index.json" /> -->
    </packageSources>

11. Remove the local nuget cache and clean the NimbusML source directory.

    rmdir %USERPROFILE%\.nuget
    cd [YOUR_NIMBUSML_REPO_ROOT]
    git clean -fxd

12. Build NimbusML using the remaining instructions found here.