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# Use the default kernel version if the Makefile doesn't override it

LINUX_RELEASE?=1

ifeq ($(LINUX_VERSION),3.3.8)
  LINUX_KERNEL_MD5SUM:=21068f0fd262b9b3670947f7892e1d6b
endif
ifeq ($(LINUX_VERSION),3.6.7)
  LINUX_KERNEL_MD5SUM:=7c959e3e0b6559ca3f1b7bf86fdc6370
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