a problem about .travis.yml file

[walterzhaoJR]

[KayEss]

I don't think Travis uses Ansible. Travis is a CI system. In the files you should find some commands that, when run on an Ubuntu system, should allow you to do a build. You may have to adjust some commands depending on exactly which version you're using and what compilers etc. you already have installed. The travis cmake file should give you an idea of the sort of thing you'd need to use in your project.