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# Use the default kernel version if the Makefile doesn't override it
LINUX_RELEASE?=1
ifeq ($(LINUX_VERSION),3.3.8)
LINUX_KERNEL_MD5SUM:=f1058f64eed085deb44f10cee8541d50
endif
ifeq ($(LINUX_VERSION),3.6.11)
LINUX_KERNEL_MD5SUM:=3d602ad7f7984509c3e923a5ae90bc54
endif
ifeq ($(LINUX_VERSION),3.7)
LINUX_KERNEL_MD5SUM:=21223369d682bcf44bcdfe1521095983
endif
# disable the md5sum check for unknown kernel versions
LINUX_KERNEL_MD5SUM?=x
split_version=$(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))))
ifeq ($(firstword $(call split_version,$(KERNEL_BASE))),2)
KERNEL_PATCHVER=$(call merge_version,$(wordlist 1,3,$(call split_version,$(KERNEL_BASE))))
else
KERNEL_PATCHVER=$(KERNEL)
endif
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