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-rw-r--r--Makefile74
1 files changed, 3 insertions, 71 deletions
diff --git a/Makefile b/Makefile
index ea5f0bee1934..a86ac8c4798e 100644
--- a/Makefile
+++ b/Makefile
@@ -883,80 +883,12 @@ PHONY += $(vmlinux-dirs)
883$(vmlinux-dirs): prepare scripts 883$(vmlinux-dirs): prepare scripts
884 $(Q)$(MAKE) $(build)=$@ 884 $(Q)$(MAKE) $(build)=$@
885 885
886# Build the kernel release string
887#
888# The KERNELRELEASE value built here is stored in the file
889# include/config/kernel.release, and is used when executing several
890# make targets, such as "make install" or "make modules_install."
891#
892# The eventual kernel release string consists of the following fields,
893# shown in a hierarchical format to show how smaller parts are concatenated
894# to form the larger and final value, with values coming from places like
895# the Makefile, kernel config options, make command line options and/or
896# SCM tag information.
897#
898# $(KERNELVERSION)
899# $(VERSION) eg, 2
900# $(PATCHLEVEL) eg, 6
901# $(SUBLEVEL) eg, 18
902# $(EXTRAVERSION) eg, -rc6
903# $(localver-full)
904# $(localver)
905# localversion* (files without backups, containing '~')
906# $(CONFIG_LOCALVERSION) (from kernel config setting)
907# $(LOCALVERSION) (from make command line, if provided)
908# $(localver-extra)
909# $(scm-identifier) (unique SCM tag, if one exists)
910# ./scripts/setlocalversion (only with CONFIG_LOCALVERSION_AUTO)
911# .scmversion (only with CONFIG_LOCALVERSION_AUTO)
912# + (only without CONFIG_LOCALVERSION_AUTO
913# and without LOCALVERSION= and
914# repository is at non-tagged commit)
915#
916# For kernels without CONFIG_LOCALVERSION_AUTO compiled from an SCM that has
917# been revised beyond a tagged commit, `+' is appended to the version string
918# when not overridden by using "make LOCALVERSION=". This indicates that the
919# kernel is not a vanilla release version and has been modified.
920
921pattern = ".*/localversion[^~]*"
922string = $(shell cat /dev/null \
923 `find $(objtree) $(srctree) -maxdepth 1 -regex $(pattern) | sort -u`)
924
925localver = $(subst $(space),, $(string) \
926 $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
927
928# scripts/setlocalversion is called to create a unique identifier if the source
929# is managed by a known SCM and the repository has been revised since the last
930# tagged (release) commit. The format of the identifier is determined by the
931# SCM's implementation.
932#
933# .scmversion is used when generating rpm packages so we do not loose
934# the version information from the SCM when we do the build of the kernel
935# from the copied source
936ifeq ($(wildcard .scmversion),)
937 scm-identifier = $(shell $(CONFIG_SHELL) \
938 $(srctree)/scripts/setlocalversion $(srctree))
939else
940 scm-identifier = $(shell cat .scmversion 2> /dev/null)
941endif
942
943ifdef CONFIG_LOCALVERSION_AUTO
944 localver-extra = $(scm-identifier)
945else
946 ifneq ($(scm-identifier),)
947 ifeq ($(LOCALVERSION),)
948 localver-extra = +
949 endif
950 endif
951endif
952
953localver-full = $(localver)$(LOCALVERSION)$(localver-extra)
954
955# Store (new) KERNELRELASE string in include/config/kernel.release 886# Store (new) KERNELRELASE string in include/config/kernel.release
956kernelrelease = $(KERNELVERSION)$(localver-full) 887localversion = $(shell $(CONFIG_SHELL) \
888 $(srctree)/scripts/setlocalversion $(srctree))
957include/config/kernel.release: include/config/auto.conf FORCE 889include/config/kernel.release: include/config/auto.conf FORCE
958 $(Q)rm -f $@ 890 $(Q)rm -f $@
959 $(Q)echo $(kernelrelease) > $@ 891 $(Q)echo $(KERNELVERSION)$(localversion) > $@
960 892
961 893
962# Things we need to do before we recursively start building the kernel 894# Things we need to do before we recursively start building the kernel