mkdir -p build && cd build && cmake .. -- The C compiler identification is GNU 9.3.0 -- The CXX compiler identification is unknown -- Check for working C compiler: /work/bsp/rk356x/buildroot/output/rockchip_rk3568/host/bin/aarch64-buildroot-linux-gnu-gcc -- Check for working C compiler: /work/bsp/rk356x/buildroot/output/rockchip_rk3568/host/bin/aarch64-buildroot-linux-gnu-gcc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done CMake Error in CMakeLists.txt: No CMAKE_CXX_COMPILER could be found. Tell CMake where to find the compiler by setting either the environment variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path to the compiler, or to the compiler name if it is in the PATH. CMake Warning (dev) in CMakeLists.txt: No cmake_minimum_required command is present. A line of code such as cmake_minimum_required(VERSION 3.10) should be added at the top of the file. The version specified may be lower if you wish to support older CMake versions for this project. For more information run "cmake --help-policy CMP0000". This warning is for project developers. Use -Wno-dev to suppress it. -- Configuring incomplete, errors occurred! See also "/home/edu/workplace/yuenki/ykrecovery/build/CMakeFiles/CMakeOutput.log". See also "/home/edu/workplace/yuenki/ykrecovery/build/CMakeFiles/CMakeError.log". Makefile:7: recipe for target 'configure' failed make: *** [configure] Error 1

这是一个CMake的错误，它提示找不到C++编译器。建议你检查一下你的系统中是否安装了C++编译器，并确认它的路径是否正确。同时，你也可以通过设置环境变量CXX或者CMake缓存条目CMAKE_CXX_COMPILER来告诉CMake编译器的路径或者编译器名称。另外，CMakeLists.txt文件中还缺少cmake_minimum_required命令，你需要在文件的开头添加这个命令，以指定CMake的最低版本要求。