This directory contains the build system. In consists mainly of makefile templates for different directory roles. :'global.mk': This file contains global variables, for example the definitions of the tools to use. :'generic.mk': Generic rules for creating file types from others. :'prg.mk': This file represents the target binary role of a directory. It must be included by all makefiles that build programs. :'lib.mk': This file represents a library role. It is never used from within the 'src/' directory but only from the <libname>.mk files in 'lib/mk/'.