Commit 1ef98856 authored by Robert P. J. Day's avatar Robert P. J. Day Committed by Sam Ravnborg

kbuild: correct and clarify versioning info in Makefile

The attached patch clarifies the creation of KERNELRELEASE and
corrects an error regarding the use of $(LOCALVERSION).
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
parent 2e99f319
......@@ -760,12 +760,34 @@ $(vmlinux-dirs): prepare scripts
$(Q)$(MAKE) $(build)=$@
# Build the kernel release string
# The KERNELRELEASE is stored in a file named include/config/kernel.release
# to be used when executing for example make install or make modules_install
#
# Take the contents of any files called localversion* and the config
# variable CONFIG_LOCALVERSION and append them to KERNELRELEASE.
# LOCALVERSION from the command line override all of this
# The KERNELRELEASE value built here is stored in the file
# include/config/kernel.release, and is used when executing several
# make targets, such as "make install" or "make modules_install."
#
# The eventual kernel release string consists of the following fields,
# shown in a hierarchical format to show how smaller parts are concatenated
# to form the larger and final value, with values coming from places like
# the Makefile, kernel config options, make command line options and/or
# SCM tag information.
#
# $(KERNELVERSION)
# $(VERSION) eg, 2
# $(PATCHLEVEL) eg, 6
# $(SUBLEVEL) eg, 18
# $(EXTRAVERSION) eg, -rc6
# $(localver-full)
# $(localver)
# localversion* (all localversion* files)
# $(CONFIG_LOCALVERSION) (from kernel config setting)
# $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set)
# ./scripts/setlocalversion (SCM tag, if one exists)
# $(LOCALVERSION) (from make command line if provided)
#
# Note how the final $(localver-auto) string is included *only* if the
# kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the
# moment, only git is supported but other SCMs can edit the script
# scripts/setlocalversion and add the appropriate checks as needed.
nullstring :=
space := $(nullstring) # end of line
......
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