The all Makefile Target and Component Dependency

Each component implements the component.all rule, which is defined in the component's Makefile.src file. This rule tells you what other components this component is dependent upon. The component.all rule in the Makefile.src implements the rule, building the component in its own build directory. If this first component depends on a second component, the dependency rule is expressed in the Makefile.src file of the first component, as shown below:

component1.all :: component2.all

If the dependency is valid only for the build process, the dependency rule is expressed in the Makefile.src file.