additionalClasspaths - AtomLinter/linter-javac GitHub Wiki

Default: <<empty>>
Type: string

With this setting you're able to add extra Java-Classpaths to the call of javac. You may add multiple paths, separated by the path-delimiter of your platform (; for win32 and : for *ix). These Classpath-settings are used to build the -cp-option of javac in conjunction with the CLASSPATH-environment-variable and optional classpath-files (which are not compatible with the Eclipse based classpath-files).

For example, you're the -d option to cache the class-files in C:\class-cache then you might use:

C:\class-cache

as additional Classpath-setting. This example fits to the win32-platform.

Please notice that placeholders (like ~) may not work, you need to use absolute and full paths.