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

Message ID 20200908205557.2746352-1-masahiroy@kernel.org
State New
Headers show
Series kbuild: do not create built-in objects for external module builds | expand

Commit Message

Masahiro Yamada Sept. 8, 2020, 8:55 p.m. UTC
'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>
---

 Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/Makefile b/Makefile
index ec2330ce0fc5..29878033f9d6 100644
--- a/Makefile
+++ b/Makefile
@@ -1692,7 +1692,8 @@  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)