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. -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html