Download and Integrate Prebuilt LiteRT C++ Binary

You can use prebuilt C++ libraries in your applications without building the entire LiteRT source tree. The integration can be done with CMake.

The following shows basic steps to use LiteRT CompiledModel API in your C++ code.

Download prebuilt LiteRT runtime shared library

Download the LiteRT runtime shared library by following the links:

Download prebuilt GPU Accelerators

If you need GPU acceleration, you can download the prebuilt GPU Accelerators below, or build the Android GPU Accelerator from source following the GPU Accelerator Build Instructions.

Here are available GPU Accelerators.

Prepare prebuilt LiteRT C++ library

Choose a folder to host LiteRT C++ SDK. We'll refer to it as <litert_cc_sdk_location>.

1. Download C++ SDK

   You need to prepare the necessary files (CMakeLists.txt, source and header files) from LiteRT C++ SDK zip file under <litert_cc_sdk_location>.

   wget https://github.com/google-ai-edge/LiteRT/releases/<litert_version>/download/litert_cc_sdk.zip
   unzip litert_cc_sdk.zip -d <litert_cc_sdk_location>
   

2. Place the downloaded libLiteRt.so under <litert_cc_sdk_location>. If you use an accelerator, place supporting library in the same directory.

   cp <path_to_prebuilt_lib>/libLiteRt.so <litert_cc_sdk_location>/litert_cc_sdk/
   

3. Build library and run_model_simple tool.

   LiteRT needs clang to build. Configure C++ SDK and build tools as the following:

   cd <litert_cc_sdk_location>
   cmake -S litert_cc_sdk -B litert_cc_sdk_build -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++
   cmake --build litert_cc_sdk_build -j
   

Integrate prebuilt LiteRT C++ library

1. Update your CMakeLists.txt to use LiteRT API.

   add_subdirectory("<litert_cc_sdk_location>" "<litert_cc_sdk_location>/build")
   include_directories("<litert_cc_sdk_location>")
   
   target_link_libraries(${CMAKE_PROJECT_NAME}
           # Use `litert_cc_api` for LiteRT C++ SDK
           litert_cc_api
           android
           log)