make[2]: *** No rule to make target 'arch/sh/boot/dts/.dtb.o', needed by 'arch/sh/boot/dts/built-in.a'.

[kbuild test robot]

Hi Masahiro,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   f17b5f06cb92ef2250513a1e154c47b78df07d40
commit: 8e9b61b293d98f878cf1e6d1ae164e41c0219959 kbuild: move .SECONDARY special target to Kbuild.include
date:   10 weeks ago
config: sh-j2_defconfig (attached as .config)
compiler: sh4-linux-gnu-gcc (Debian 8.2.0-11) 8.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 8e9b61b293d98f878cf1e6d1ae164e41c0219959
        # save the attached .config to linux build tree
        GCC_VERSION=8.2.0 make.cross ARCH=sh 

All errors (new ones prefixed by >>):

>> make[2]: *** No rule to make target 'arch/sh/boot/dts/.dtb.o', needed by 'arch/sh/boot/dts/built-in.a'.
   make[2]: Target '__build' not remade because of errors.

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