Ard Biesheuvel reports bindeb-pkg with O= option is broken in the
following way:

  ...
    LD [M]  sound/soc/rockchip/snd-soc-rk3399-gru-sound.ko
    LD [M]  sound/soc/rockchip/snd-soc-rockchip-pcm.ko
    LD [M]  sound/soc/rockchip/snd-soc-rockchip-rt5645.ko
    LD [M]  sound/soc/rockchip/snd-soc-rockchip-spdif.ko
    LD [M]  sound/soc/sh/rcar/snd-soc-rcar.ko
   fakeroot -u debian/rules binary
  make KERNELRELEASE=4.19.0-12677-g19beffaf7a99-dirty ARCH=arm64 KBUILD_SRC= 
intdeb-pkg
  /bin/bash /home/ard/linux/scripts/package/builddeb
  Makefile:600: include/config/auto.conf: No such file or directory
  ***
  *** Configuration file ".config" not found!
  ***
  *** Please run some configurator (e.g. "make oldconfig" or
  *** "make menuconfig" or "make xconfig").
  ***
  make[12]: *** [syncconfig] Error 1
  make[11]: *** [syncconfig] Error 2
  make[10]: *** [include/config/auto.conf] Error 2
  make[9]: *** [__sub-make] Error 2
  ...

Prior to commit 80463f1b7bf9 ("kbuild: add --include-dir flag only
for out-of-tree build"), both objtree and srctree were added to
--include-dir, and the wrong code '$MAKE image_name' was working
relying on that. Now, the potential issue that had previously been
hidden just showed up.

'$MAKE image_name' recurses to the generated $(objtree)/Makefile and
ends up with running in srctree, which is incorrect. It should be
invoked with '-f $srctree/Makefile' (or KBUILD_SRC=) to be executed
in objtree.

Fixes: 80463f1b7bf9 ("kbuild: add --include-dir flag only for out-of-tree 
build")
Reported-by: Ard Biesheuvel <ard.biesheu...@linaro.org>
Signed-off-by: Masahiro Yamada <yamada.masah...@socionext.com>
---

 scripts/package/builddeb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/package/builddeb b/scripts/package/builddeb
index 90c9a8a..0b31f4f 100755
--- a/scripts/package/builddeb
+++ b/scripts/package/builddeb
@@ -81,7 +81,7 @@ else
        cp System.map "$tmpdir/boot/System.map-$version"
        cp $KCONFIG_CONFIG "$tmpdir/boot/config-$version"
 fi
-cp "$($MAKE -s image_name)" "$tmpdir/$installed_image_path"
+cp "$($MAKE -s -f $srctree/Makefile image_name)" 
"$tmpdir/$installed_image_path"
 
 if grep -q "^CONFIG_OF=y" $KCONFIG_CONFIG ; then
        # Only some architectures with OF support have this target
-- 
2.7.4

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