BuildingForAndroid - akuporos/openvino GitHub Wiki

Build on Android* Systems

This section describes how to build Inference Engine for Android operating systems.

Table of content

Software Requirements

  • CMake* 3.13 or higher
  • Android NDK (this guide has been validated with r20 release)

Build Steps

  1. Download and unpack Android NDK: https://developer.android.com/ndk/downloads. Let's assume that ~/Downloads is used as a working folder.
cd ~/Downloads
wget https://dl.google.com/android/repository/android-ndk-r20-linux-x86_64.zip

unzip android-ndk-r20-linux-x86_64.zip
mv android-ndk-r20 android-ndk
  1. Clone submodules
cd openvino
git submodule update --init --recursive
  1. Create a build folder:
  mkdir build
  1. Change working directory to build and run cmake to create makefiles. Then run make.
cd build

cmake .. \
  -DCMAKE_TOOLCHAIN_FILE=~/Downloads/android-ndk/build/cmake/android.toolchain.cmake \
  -DANDROID_ABI=x86_64 \
  -DANDROID_PLATFORM=21 \
  -DANDROID_STL=c++_shared \
  -DENABLE_OPENCV=OFF

make --jobs=$(nproc --all)
  • ANDROID_ABI specifies target architecture:
    • x86_64 for x64 build
    • armeabi-v7a with NEON for ARM with NEON support
    • arm64-v8a for ARM 64 bits
  • ANDROID_PLATFORM - Android API version
  • ANDROID_STL specifies that shared C++ runtime is used. Copy ~/Downloads/android-ndk/sources/cxx-stl/llvm-libc++/libs/x86_64/libc++_shared.so from Android NDK along with built binaries
  1. To reduce the binaries size, use strip tool from NDK:
~/Downloads/android-ndk/toolchains/llvm/prebuilt/linux-x86_64/x86_64-linux-android/bin/strip openvino/bin/intel64/Release/lib/*.so