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98 lines
3.4 KiB
Markdown
98 lines
3.4 KiB
Markdown
# Android部署库编译
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FastDeploy当前在Android仅支持Paddle-Lite后端推理，支持armeabi-v7a和arm64-v8a两种cpu架构，在armv8.2架构的arm设备支持fp16精度推理。相关编译选项说明如下：
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|编译选项|默认值|说明|备注|
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|ENABLE_LITE_BACKEND|OFF|编译Android库时需要设置为ON| - |
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|WITH_OPENCV_STATIC|OFF|是否使用OpenCV静态库| - |
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|WITH_LITE_STATIC|OFF|是否使用Lite静态库| 暂不支持使用Lite静态库 |
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更多编译选项请参考[FastDeploy编译选项说明](./README.md)
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## Android C++ SDK 编译安装
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编译需要满足：
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- Android SDK API >= 21
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- Android NDK >= 20 (当前仅支持clang编译工具链)
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- cmake >= 3.10.0
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编译前请先检查您的Android SDK 和 NDK 是否已经配置，如：
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```bash
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➜ echo $ANDROID_SDK
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/Users/xxx/Library/Android/sdk
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➜ echo $ANDROID_NDK
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/Users/xxx/Library/Android/sdk/ndk/25.1.8937393
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```
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推荐使用 NDK>=20 进行交叉编译，编译命令如下：
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```bash
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# Download the latest source code
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git clone https://github.com/PaddlePaddle/FastDeploy.git
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cd FastDeploy
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# Setting up Android toolchanin
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ANDROID_ABI=arm64-v8a # 'arm64-v8a', 'armeabi-v7a'
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ANDROID_PLATFORM="android-21" # API >= 21
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ANDROID_STL=c++_shared # 'c++_shared', 'c++_static'
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ANDROID_TOOLCHAIN=clang # 'clang' only
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TOOLCHAIN_FILE=${ANDROID_NDK}/build/cmake/android.toolchain.cmake
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# Create build directory
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BUILD_ROOT=build/Android
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BUILD_DIR=${BUILD_ROOT}/${ANDROID_ABI}-api-21
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FASDEPLOY_INSTALL_DIR="${BUILD_DIR}/install"
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mkdir build && mkdir ${BUILD_ROOT} && mkdir ${BUILD_DIR}
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cd ${BUILD_DIR}
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# CMake configuration with Android toolchain
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cmake -DCMAKE_TOOLCHAIN_FILE=${TOOLCHAIN_FILE} \
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-DCMAKE_BUILD_TYPE=MinSizeRel \
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-DANDROID_ABI=${ANDROID_ABI} \
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-DANDROID_NDK=${ANDROID_NDK} \
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-DANDROID_PLATFORM=${ANDROID_PLATFORM} \
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-DANDROID_STL=${ANDROID_STL} \
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-DANDROID_TOOLCHAIN=${ANDROID_TOOLCHAIN} \
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-DENABLE_LITE_BACKEND=ON \
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-DENABLE_VISION=ON \
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-DCMAKE_INSTALL_PREFIX=${FASDEPLOY_INSTALL_DIR} \
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-Wno-dev ../../..
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# Build FastDeploy Android C++ SDK
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make -j8
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make install
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```
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编译完成后，Android C++ SDK 保存在 `build/Android/arm64-v8a-api-21/install` 目录下，目录结构如下：
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```bash
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➜ tree . -d -L 3
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.
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├── examples
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├── include
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│ └── fastdeploy # FastDeploy 头文件
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├── lib
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│ └── arm64-v8a # FastDeploy Android 动态库
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└── third_libs # 第三方依赖库
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└── install
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├── opencv
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├── flycv
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└── paddlelite
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```
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在examples/vision目录下可查看Android C++ SDK 使用案例：
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```bash
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.
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├── classification
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│ ├── paddleclas
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│ │ ├── android # 图像分类Android使用案例
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│ │ ├── cpp
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...
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├── detection
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│ ├── paddledetection
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│ │ ├── android # 目标检测Android使用案例
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│ │ ├── cpp
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...
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```
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如何使用FastDeploy Android C++ SDK 请参考使用案例文档：
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- [图像分类Android使用文档](../../../examples/vision/classification/paddleclas/android/README.md)
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- [目标检测Android使用文档](../../../examples/vision/detection/paddledetection/android/README.md)
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- [在 Android 通过 JNI 中使用 FastDeploy C++ SDK](../../cn/faq/use_cpp_sdk_on_android.md)
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