This linter plugin for Linter provides an interface to clang. It will be used with files that have the "C++", "C", "Objective-C" and "Objective-C++" syntax.
Install from the Settings pane of Atom by searching for and installing both the linter and linter-clang packages.
Or install from your Command Prompt by running:
$ apm install linter
$ apm install linter-clang
If your project has some extra include directories, put them in a file called ".clang_complete" and list them line by line. The linter will open the file and use the specified paths when linting in your project.
As well the Clang JSON Compilation Database is a supported format for project specific settings.