flutter报错:xcode-select: note: No developer tools were found, requesting install.

一，报错信息：

% flutter --version
xcode-select: note: No developer tools were found, requesting install.
If developer tools are located at a non-default location on disk, use `sudo xcode-select --switch path/to/Xcode.app` to specify the Xcode that you wish to use for command line developer tools, and cancel the installation dialog.
See `man xcode-select` for more details.
xcode-select: note: No developer tools were found, requesting install.
If developer tools are located at a non-default location on disk, use `sudo xcode-select --switch path/to/Xcode.app` to specify the Xcode that you wish to use for command line developer tools, and cancel the installation dialog.
See `man xcode-select` for more details.

二，解决:

如果 命令行开发者工具安装程序 没有自动启动，可以手动执行

% xcode-select --install

三，查看效果：

% xcode-select -p       
/Library/Developer/CommandLineTools

可以看到命令行开发者工具安装到了/Library/Developer/CommandLineTools