Build Dlib C++ for Android

Nhan Cao

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3 min read

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Apr 7, 2019

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• Prepare Android SDK

• Run script below

git clone https://github.com/davisking/dlib.git dlib-19.17
cd dlib-19.17
git checkout tags/v19.17
cd dlibexport ANDROID_HOME=$HOME/Library/Android/sdk
export ANDROID_NDK=$ANDROID_HOME/ndk-bundle
export CMAKE_HOME=$ANDROID_HOME/cmake/3.6.4111459/bin
export CMAKE=$CMAKE_HOME/cmake
export NINJA=$CMAKE_HOME//ninja
export CMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake
export DLIB_PATH=`pwd`
$CMAKE -GNinja \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_TOOLCHAIN_FILE=$CMAKE_TOOLCHAIN_FILE \
    -DCMAKE_INSTALL_PREFIX=$DLIB_PATH/dlib_native \
    -DANDROID_NDK=$ANDROID_NDK \
    -DANDROID_TOOLCHAIN=clang \
    -DCMAKE_ANDROID_ARCH_ABI=armeabi-v7a \
    -DANDROID_ABI=armeabi-v7a \
    -DANDROID_LINKER_FLAGS="-landroid -llog" \
    -DANDROID_NATIVE_API_LEVEL=27 \
    -DANDROID_STL=c++_static \
    -DDLIB_PNG_SUPPORT=ON \
    -DDLIB_JPEG_SUPPORT=ON \
    -DDLIB_NO_GUI_SUPPORT=TRUE \
    -DDLIB_USE_BLAS=FALSE \
    -DDLIB_USE_LAPACK=FALSE \
    -DANDROID_CPP_FEATURES="rtti exceptions" \
    -DCMAKE_MAKE_PROGRAM=$NINJA \
    ..$NINJA
$NINJA install

• After build successfully, we get “dlib_native” folder