arm_dnn_library

arm_dnn_library is a Arm NEON accelerated library for neural network inference for Paddle and Paddle-Lite.

Supported platforms

Armv7 and Armv8 on Android, iOS, macOS, Linux and Windows.

Supported operators

relu
concat

How to build ?

For Android,

Preparing build environment.

On x86+Linux,

1) Install build-essentials.
  $ apt update
  $ apt-get install -y --no-install-recommends gcc g++ git make wget python unzip adb curl

2) Install CMake 3.10.3.
  $ wget -c https://mms-res.cdn.bcebos.com/cmake-3.10.3-Linux-x86_64.tar.gz && \
    tar xzf cmake-3.10.3-Linux-x86_64.tar.gz && \
    mv cmake-3.10.3-Linux-x86_64 /opt/cmake-3.10 &&
    ln -s /opt/cmake-3.10/bin/cmake /usr/bin/cmake && \
    ln -s /opt/cmake-3.10/bin/ccmake /usr/bin/ccmake

3) Install Android NDK.
  $ cd /tmp && curl -O https://dl.google.com/android/repository/android-ndk-r17c-linux-x86_64.zip
  $ cd /opt && unzip /tmp/android-ndk-r17c-linux-x86_64.zip
  $ echo "export ANDROID_NDK=/opt/android-ndk-r17c" >> ~/.bashrc
  $ source ~/.bashrc

4) Remove debug flags in android.toolchain.cmake, please refer to https://github.com/android/ndk/issues/243.
  Edit $ANDROID_NDK/build/cmake/android.toolchain.cmake or $ANDROID_NDK/build/cmake/android-legacy.toolchain.cmake after Android NDK r23c.
  list(APPEND ANDROID_COMPILER_FLAGS
    # Remove debug flags -g
    -DANDROID
    ...

On x86+macOS,

1) Install build-essentials.
  $ brew install curl gcc git make unzip wget

2) Install CMake 3.10.3.
  $ mkdir /usr/local/Cellar/cmake/ && cd /usr/local/Cellar/cmake/
  $ wget https://cmake.org/files/v3.10/cmake-3.10.2-Darwin-x86_64.tar.gz
  $ tar zxf ./cmake-3.10.2-Darwin-x86_64.tar.gz
  $ mv cmake-3.10.2-Darwin-x86_64/CMake.app/Contents/ ./3.10.2
  $ ln -s /usr/local/Cellar/cmake/3.10.2/bin/cmake /usr/local/bin/cmake

3) Install Android NDK.
  $ cd ~/Documents && curl -O https://dl.google.com/android/repository/android-ndk-r17c-darwin-x86_64.zip
  $ cd ~/Library && unzip ~/Documents/android-ndk-r17c-darwin-x86_64.zip
  $ echo "export ANDROID_NDK=~/Library/android-ndk-r17c" >> ~/.bash_profile
  $ source ~/.bash_profile

4) Remove debug flags in android.toolchain.cmake, please refer to https://github.com/android/ndk/issues/243.
  Edit $ANDROID_NDK/build/cmake/android.toolchain.cmake or $ANDROID_NDK/build/cmake/android-legacy.toolchain.cmake after Android NDK r23c.
  list(APPEND ANDROID_COMPILER_FLAGS
    # Remove debug flags -g
    -DANDROID
    ...

Build for armeabi-v7a,

$ ./scripts/build_android.sh --arch=armv7

Build for arm64-v8a,
```
$ ./scripts/build_android.sh
```

For Linux,

Preparing build environment.

On x86+Linux,

1) Install build-essentials.
  $ apt update
  $ apt-get install -y --no-install-recommends gcc g++ git make wget python unzip g++-arm-linux-gnueabi gcc-arm-linux-gnueabi g++-arm-linux-gnueabihf gcc-arm-linux-gnueabihf gcc-aarch64-linux-gnu g++-aarch64-linux-gnu

2) Install CMake 3.10.3.
  $ wget -c https://mms-res.cdn.bcebos.com/cmake-3.10.3-Linux-x86_64.tar.gz && \
    tar xzf cmake-3.10.3-Linux-x86_64.tar.gz && \
    mv cmake-3.10.3-Linux-x86_64 /opt/cmake-3.10 &&
    ln -s /opt/cmake-3.10/bin/cmake /usr/bin/cmake && \
    ln -s /opt/cmake-3.10/bin/ccmake /usr/bin/ccmake

on Arm+Linux,

1) Install build-essentials.
  $ apt update
  $ apt-get install -y --no-install-recommends gcc g++ make wget python unzip patchelf

2) Install CMake 3.10.3 or above.
  $ wget https://www.cmake.org/files/v3.10/cmake-3.10.3.tar.gz
  $ tar -zxvf cmake-3.10.3.tar.gz
  $ cd cmake-3.10.3
  $ ./configure
  $ make
  $ sudo make install

Build for armhf,

$ ./scripts/build_linux.sh --arch=armv7

Build for arm64,
```
$ ./scripts/build_linux.sh
```