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The top Makefile is divided into some sections such as mixed targets, config targets, build targets, etc. When we build mixed targets, Kbuild just invokes submake to process them one by one. In this case, compiler-related variables like CC, KBUILD_CFLAGS, etc. are unneeded. Check what kind of targets we are building first, and parse variables for building only when necessary. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.