Config.uk

The Config.uk file stores all the config variables, which will be visible in make menuconfig. These variables can be accessed from Makefile.uk or even from C sources, by including "uk/config.h", using the prefix CONFIG_.

For example, in the configuration file of lib-libhogweed, libhogweed/Config.uk, we have:

1. The main variable of the library which acts as an identifier for it:

   config LIBHOGWEED
   	bool "libhogweed - Public-key algorithms"
   	default n
   

2. We can also set another library’s main variable, in this case newlib, which involves including it in the build process:

   select LIBNEWLIBC
   

3. Creating an auxiliary menu, containing all the test cases:

   menuconfig TESTSUITE
   		bool "testsuite - tests for libhogweed"
   		default n
   		if TESTSUITE
   			config TEST_X
   				bool "test x functionality"
   				default y
   		endif
   

   Each test case has its own variable in order to allow testing just some tests from the whole suite.