cmake - 我在 ubuntu 18.04 中安装 root (cern) 时遇到问题

Question

我按照此页面中描述的步骤操作：https ://techforcurious.website/cern-root-installation-ubuntu-18-04-enabling-libraries/但是当我放置时cmake ../root-6.10.04/ -Dall=ON出现下一个错误：

CMake Error at cmake/modules/SearchInstalledSoftware.cmake:825 (message):
  The Alien plugin requires option 'xrootd' to be enabled.  Re-run the
  configuration with 'xrootd=ON'

我重新运行配置xrootd=ON并出现：

 Set environment variable XRDSYS to point to your XROOTD installation
 Alternatively, you can also enable the option 'builtin_xrootd' to build XROOTD internally.

请帮帮我。

标签： cmakeroot-framework