我的macos是Mojave，10.14.4，Xcode已经全面更新。我今天早上完成了任务。另外，在我通过 App Store 下载 Xcode 后，弹出一个提示
安装额外的必需组件？Xcode 需要额外的组件来支持运行和调试。选择安装以添加所需的组件。
我完全遵守了。最后我能够打开 Xcode 并且版本是
Xcode 10.2.1 (10E1001)
为了采取额外措施，我重新启动了计算机。但是 fink 仍然无法运行；见下文。
> fink install jhead
Password:
Use 'fink reinstall fink' to switch distributions
from 10.13 to 10.14.
'install' operation not permitted.
> fink reinstall fink
Use 'fink reinstall fink' to switch distributions
from 10.13 to 10.14.
Information about 11530 packages read in 2 seconds.
Failed:
The Xcode Command Line Tools need to be (re)installed.
Execute 'sudo xcode-select --install' to obtain them.
Or you can get them via direct download from developer.apple.com
(free registration required) if you don't want to install Xcode.app.
> sudo xcode-select --install
xcode-select: error: command line tools are already installed, use "Software Update" to install updates
> fink -V
Package manager version: 0.43.1
Distribution version: selfupdate-git Fri May 10 17:37:58 2019, 10.13, x86_64
Trees: local/main stable/main
Copyright (c) 2001 Christoph Pfisterer
Copyright (c) 2001-2016 The Fink Package Manager Team
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
>
我如何让芬克工作？