在ArceOS上运行 OpenCV

  1. 下载编译

下载，操作请注意路径

starry/python-lab/build$ git clone https://github.com/opencv/opencv.git --depth 1
  1. 编译环境 Ubuntu 24.04( 22.04 应该也可以) 请下载好 aarch64-linux-musl-cross，并设置好可以执行路径

https://musl.cc/aarch64-linux-musl-cross.tgz

解压缩后，将 aarch64-linux-musl-cross/bin 添加到PATH里面

输入 下面命令检查 编译器路径是否设置成功:

aarch64-linux-musl-gcc

安装 cmake，make

sudo aptitude install cmake make
  1. 建立编译脚本文件
starry/python-lab/build/opencv$ touch aarch64_musl.cmake

内容如下：

# CMakeToolchainFile.cmake
cmake_minimum_required(VERSION 3.16)
# 设置目标系统
set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_SYSTEM_PROCESSOR aarch64)
# 定义工具链前缀
set(CMAKE_AR aarch64-linux-musl-ar)
set(CMAKE_RANLIB aarch64-linux-musl-ranlib)
set(CMAKE_NM aarch64-linux-musl-nm)
set(CMAKE_STRIP aarch64-linux-musl-strip)
set(CMAKE_OBJCOPY aarch64-linux-musl-objcopy)
set(CMAKE_SIZE aarch64-linux-musl-size)
set(CMAKE_C_COMPILER aarch64-linux-musl-gcc)
set(CMAKE_CXX_COMPILER aarch64-linux-musl-g++)
set(CMAKE_ASM_COMPILER aarch64-linux-musl-gcc)
# 设置编译器标志
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Werror")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Werror")
set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -Wall -Werror")
# 设置链接器静态编译标志
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static")
# 设置 CMake 寻找库文件的路径
set(CMAKE_FIND_ROOT_PATH "/home/debin/toolchain/aarch64-linux-muslcross/aarch64-linux-musl")
# 配置 CMake 如何查找库文件
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) # 不搜索宿主系统的程序
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) # 只搜索 sysroot
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY) # 只搜索 sysroot
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY) # 只搜索 sysroot
# 设置 CMake sysroot路径
set(CMAKE_SYSROOT "/home/debin/toolchain/aarch64-linux-muslcross/aarch64-linux-musl")
set(CMAKE_FIND_ROOT_PATH "${CMAKE_SYSROOT}")

建立 build和install目录

starry/python-lab/build/opencv$ mkdir build install

生成编译环境：

starry/python-lab/build/opencv/build$ cmake -DCMAKE_TOOLCHAIN_FILE=../aarch64_musl.cmake -DBUILD_SHARED_LIBS=OFF -DINSTALL_TESTS=ON -DOPENCV_ENABLE_NONFREE=ON ..

编译

make -j16