This package provides a company-mode asynchronous completion backend for the C, C++ and Objective-C languages.
The recommended way to install
company-irony and its dependencies is through a
M-x package-install RET company-irony RET
M-x el-get-install RET company-irony RET
company-irony to your company backends.
(eval-after-load 'company '(add-to-list 'company-backends 'company-irony))