ubuntu中使用cmake编译报错No CMAKE_CXX_COMPILER could be found.的解决方法

No CMAKE_CXX_COMPILER could be found.

ubuntu编译的时候出现以下报错：

CMake Error at CMakeLists.txt:3 (project):No CMAKE_CXX_COMPILER could be found.Tell CMake where to find the compiler by setting either the environmentvariable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full pathto the compiler, or to the compiler name if it is in the PATH.

解决办法如下：

1. 确保安装了C++编译器：

• 对于 Windows，你可能需要安装 Visual Studio，并确保选择了 Desktop development with C++ 选项，这样才能安装C++编译器（如 cl.exe）。
• 对于 Linux 和 macOS，你需要安装 g++ 或者 clang：
  Ubuntu: 你可以通过以下命令安装：

	sudo apt updatesudo apt install build-essential

安装过程

重新编译，成功。报cuda错误

Could NOT find CUDA (missing: CUDA_NVCC_EXECUTABLE CUDA_CUDART_LIBRARY)

1. 检查环境变量， ls /usr/local/cuda/bin，如果已安装，运行下面的代码，否则会提示没路径

export PATH=/usr/local/cuda/bin:$PATH
export LD_LIBRARY_PATH=/usr/local/cuda/lib64:$LD_LIBRARY_PATH

然后运行 source ~/.bashrc 使配置生效。再试运行 nvcc --version。

2. 否则安装CUDA开发包在这里插入代码片

sudo apt-get install nvidia-cuda-toolkit

Could not find a package configuration file provided by “OpenCV” with any

cmake出现以下报错

CMake Warning at CMakeLists.txt:28 (find_package):By not providing "FindOpenCV.cmake" in CMAKE_MODULE_PATH this project hasasked CMake to find a package configuration file provided by "OpenCV", butCMake did not find one.Could not find a package configuration file provided by "OpenCV" with anyof the following names:OpenCVConfig.cmakeopencv-config.cmakeAdd the installation prefix of "OpenCV" to CMAKE_PREFIX_PATH or set"OpenCV_DIR" to a directory containing one of the above files.  If "OpenCV"provides a separate development package or SDK, be sure it has beeninstalled.

输入这个指令

sudo apt-get install libopencv-dev python3-opencv