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kbuild: do not create built-in objects for external module builds 

'make M=/path/to/your/external/module' creates a pointless built-in.a
in the top of the external module directory because KBUILD_BUILTIN is
set to 1.

Clear KBUILD_BUILTIN when we are building external modules so that
'make M=...' and 'make M=... modules' work equivalently.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This commit is contained in:
Masahiro Yamada 2020-09-09 05:55:57 +09:00
parent 596b0474d3
commit 6212804f2d
1 changed files with 2 additions and 1 deletions
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Makefile
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@ -1702,7 +1702,8 @@ else # KBUILD_EXTMOD
# Install the modules built in the module directory
# Assumes install directory is already created
# We are always building modules
# We are always building only modules.
KBUILD_BUILTIN :=
KBUILD_MODULES := 1
build-dirs := $(KBUILD_EXTMOD)