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kbuild: Do not overwrite include/config/kernel.release needlessly

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Use filechk to detect if the content changed or not.

Signed-off-by: Michal Marek <mmarek@suse.cz>
This commit is contained in:
Michal Marek 2013-07-11 15:34:51 +02:00
parent 4f9879f6c6
commit 0d0e7718a9
1 changed files with 5 additions and 2 deletions
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7
Makefile
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@ -794,10 +794,13 @@ PHONY += $(vmlinux-dirs)
$(vmlinux-dirs): prepare scripts
$(Q)$(MAKE) $(build)=$@
define filechk_kernel.release
echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
endef
# Store (new) KERNELRELEASE string in include/config/kernel.release
include/config/kernel.release: include/config/auto.conf FORCE
$(Q)rm -f $@
$(Q)echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" > $@
$(call filechk,kernel.release)
# Things we need to do before we recursively start building the kernel