#Letter#
#Open-source components
(from http, ftp, git, svn, etc.)#
#In-house components
(from http, ftp, git, svn, etc.)#
#Buildroot#
#Makefiles
build
procedures#
#Config.in
configuration
options#
#.config
your configuration#
#root filesystem
image#
#kernel image#
#bootloader
image(s)#
#toolchain#