如何将目录添加到 PKG_CONFIG_PATH 环境变量中？

Question

我是Ubuntu新手，问题是我想安装opencv，然后我想用这句话查看已安装程序的版本

pkg-config --modversion opencv

然后终端向我显示这种类型的“错误”

Package opencv was not found in the pkg-config search path.
Perhaps you should add the directory containing `opencv.pc'
to the PKG_CONFIG_PATH environment variable
No package 'opencv' found

我尝试了所有方法，但都不起作用，有人知道如何解决吗？

Answer 1

安装开发包如下：

apt install libopencv-dev