I recently found a nice emacs-mode, [irony-mode], which can be used with [company-mode], [flycheck-mode], and [eldoc-mode]. It works nicely with CMake-based projects. The document contains a list of instructions for setting things up. I assume that you're using a fresh-installed Ubuntu-12.04.5 (64-bit). It uses [Lean theorem prover][lean] as an example project.
- Rails: https://github.com/rails/pjax_rails
- Django: https://github.com/jacobian/django-pjax
- Asp.Net MVC3: http://biasecurities.com/blog/2011/using-pjax-with-asp-net-mvc3/
- FuelPHP: https://github.com/rcrowe/fuel-pjax
- Grails: http://www.bobbywarner.com/2012/04/23/add-some-pjax-to-grails/
- Express: https://github.com/abdelsaid/express-pjax-demo