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kbuild: cancel sub_make_done for the install target to fix DKMS 

Since commit bcf637f54f ("kbuild: parse C= and M= before changing the
working directory"), external module builds invoked by DKMS fail because
M= option is not parsed.

I wanted to add 'unset sub_make_done' in install.sh but similar scripts,
arch/*/boot/install.sh, are duplicated, so I set sub_make_done empty in
the top Makefile.

Fixes: bcf637f54f ("kbuild: parse C= and M= before changing the working directory")
Reported-by: John S Gruber <johnsgruber@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: John S Gruber <johnsgruber@gmail.com>
This commit is contained in:
Masahiro Yamada 2021-07-29 09:12:54 +09:00
parent 54eacba0e3
commit 14ccc638b0
1 changed files with 10 additions and 0 deletions
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10
Makefile
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@ -1317,6 +1317,16 @@ PHONY += scripts_unifdef
scripts_unifdef: scripts_basic
$(Q)$(MAKE) $(build)=scripts scripts/unifdef
# ---------------------------------------------------------------------------
# Install
# Many distributions have the custom install script, /sbin/installkernel.
# If DKMS is installed, 'make install' will eventually recuses back
# to the this Makefile to build and install external modules.
# Cancel sub_make_done so that options such as M=, V=, etc. are parsed.
install: sub_make_done :=
# ---------------------------------------------------------------------------
# Tools