buildroot/package/ .mk config.in

.buildroot.mk:

This file contains the main configuration variables and settings for Buildroot. It is read by the build process and used to determine which packages to build and how to build them.

.packages.mk:

This file contains the list of packages that Buildroot should build. It also specifies the dependencies between packages.

.config.in:

This is the configuration interface file. It defines the configuration options that are presented to the user during the configuration process. The options are grouped into sections, and each option has a description and a default value.

Each option can also have dependencies on other options. When an option is selected, its dependencies are automatically selected as well.

The .config.in file is used by the menuconfig tool to generate the configuration interface.