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# Use the default kernel version if the Makefile doesn't override it
LINUX_RELEASE?=1
LINUX_VERSION-3.18 = .132
LINUX_VERSION-4.9 = .150
LINUX_VERSION-4.14 = .93
LINUX_VERSION-4.19 = .16
LINUX_KERNEL_HASH-3.18.132 = c187bd0322372bd34c862cbb06a1996a63524ccb401466362b57ede45901a879
LINUX_KERNEL_HASH-4.9.150 = 94cc177ba2b433e4e30fefef38de33248ba1e2499ebda905096a8822097117e4
LINUX_KERNEL_HASH-4.14.93 = bb125fb204f7089782e179126121dd0f0aad9f02b7517ce3744982254c221bad
LINUX_KERNEL_HASH-4.19.16 = d8a088381fe3e7e5484c060dabcdda4b053ef7114f91cfd56db003a89bb11bdf
remove_uri_prefix=$(subst git://,,$(subst http://,,$(subst https://,,$(1))))
sanitize_uri=$(call qstrip,$(subst @,_,$(subst :,_,$(subst .,_,$(subst -,_,$(subst /,_,$(1)))))))
ifneq ($(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
LINUX_VERSION:=$(call sanitize_uri,$(call remove_uri_prefix,$(CONFIG_KERNEL_GIT_CLONE_URI)))
ifeq ($(call qstrip,$(CONFIG_KERNEL_GIT_REF)),)
CONFIG_KERNEL_GIT_REF:=HEAD
endif
LINUX_VERSION:=$(LINUX_VERSION)-$(call sanitize_uri,$(CONFIG_KERNEL_GIT_REF))
else
ifdef KERNEL_PATCHVER
LINUX_VERSION:=$(KERNEL_PATCHVER)$(strip $(LINUX_VERSION-$(KERNEL_PATCHVER)))
endif
endif
split_version=$(subst ., ,$(1))
merge_version=$(subst $(space),.,$(1))
KERNEL_BASE=$(firstword $(subst -, ,$(LINUX_VERSION)))
KERNEL=$(call merge_version,$(wordlist 1,2,$(call split_version,$(KERNEL_BASE))))
KERNEL_PATCHVER ?= $(KERNEL)
# disable the md5sum check for unknown kernel versions
LINUX_KERNEL_HASH:=$(LINUX_KERNEL_HASH-$(strip $(LINUX_VERSION)))
LINUX_KERNEL_HASH?=x
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