From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: Bug: kbuild always rebuilds compressed images on ARM
Date: Sat, 5 Oct 2013 14:17:06 +0100 [thread overview]
Message-ID: <20131005131706.GY12758@n2100.arm.linux.org.uk> (raw)
Hi,
I've noticed that kbuild always rebuilds the compressed piggy image
on ARM. Here's the output from running make with V=2:
CALL /home/rmk/git/linux-rmk/scripts/checksyscalls.sh - due to target missing
CHK include/generated/compile.h
Kernel: arch/arm/boot/Image is ready
Building modules, stage 2.
LZO arch/arm/boot/compressed/piggy.lzo - due to command line change
MODPOST 17 modules - due to target is PHONY
AS arch/arm/boot/compressed/piggy.lzo.o - due to: arch/arm/boot/compressed/piggy.lzo
LD arch/arm/boot/compressed/vmlinux - due to: arch/arm/boot/compressed/piggy.lzo.o
OBJCOPY arch/arm/boot/zImage - due to: arch/arm/boot/compressed/vmlinux
Kernel: arch/arm/boot/zImage is ready
and with V=1:
...
make -f /home/rmk/git/linux-rmk/scripts/Makefile.build obj=arch/arm/boot/compressed arch/arm/boot/compressed/vmlinux
make -f /home/rmk/git/linux-rmk/scripts/Makefile.modpost
find .tmp_versions -name '*.mod' | xargs -r grep -h '\.ko$' | sort -u | sed 's/\.ko$/.o/' | scripts/mod/modpost -m -a -o /home/rmk/git/build/imx6/Module.symvers -S -s -T -
(cat arch/arm/boot/compressed/../Image | lzop -9 && printf \\010\\224\\034\\002) > arch/arm/boot/compressed/piggy.lzo || (rm -f arch/arm/boot/compressed/piggy.lzo ; false)
make -f /home/rmk/git/linux-rmk/scripts/Makefile.fwinst obj=firmware __fw_modbuild
...
The arch/arm/boot/compressed/.piggy.lzo.cmd file contains this:
cmd_arch/arm/boot/compressed/piggy.lzo := (cat arch/arm/boot/compressed/../Image | lzop -9 && printf \\\\010\\\\224\\\\034\\\\002) > arch/arm/boot/compressed/piggy.lzo || (rm -f arch/arm/boot/compressed/piggy.lzo ; false)
Any ideas why it thinks that the command has changed?
Thanks.
next reply other threads:[~2013-10-05 13:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-05 13:17 Russell King - ARM Linux [this message]
2013-10-07 20:03 ` Bug: kbuild always rebuilds compressed images on ARM Stephen Boyd
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