ChorusOS Configuration

ChorusOS 4.0 Introduction explains how to configure the ChorusOS operating system with the configurator command, or by using the ews graphical tool. With both configuration tools, you can statically configure the features, tunables and environment variables. Once the system configuration has been altered, rebuild a new system image.

It is strongly advised that you use the ews graphical tool, particularly if you are not familiar with the configurator command, as the ews graphical tool ensures the ChorusOS system integrity.

This chapter explains how to implement the features and tunables managed by the mkmk tool.

• Features control the list of modules linked to build an actor. The list of object files used to link an actor is calculated from the values of the features values.

• Tunables provide a way of changing the values of integers used in the actor. There is no recompilation of the source files. Values are taken into account when the actor is linked.

Only components built with the mkmk tool can implement features and tunables. Features and tunables apply to configurable actors in which the ChorusOS kernel itself is included.

Configuration files are all expressed in eXtensible Markup Language (XML). This provides a structured and organized view of the various configuration options of the ChorusOS system. See ChorusOS 4.0 Introduction for a description of the XML configuration language, as used in the ChorusOS system.