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| author |   Masahiro Yamada <masahiroy@kernel.org> | 2025-06-03 03:12:53 +0900 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2025-06-07 14:37:50 +0900 |
| commit | 1bf807b8f7e0eada62007f9f1966f3d22329eef9 (patch) | |
| tree | e61387c6b92f9bd9631b881d26a2684da1b05f6c /Documentation | |
| parent | efi/libstub: use 'targets' instead of extra-y in Makefile (diff) | |
| download | linux-rng-1bf807b8f7e0eada62007f9f1966f3d22329eef9.tar.xz linux-rng-1bf807b8f7e0eada62007f9f1966f3d22329eef9.zip | |
kbuild: set y instead of 1 to KBUILD_{BUILTIN,MODULES}
KBUILD_BUILTIN is set to 1 unless you are building only modules.
KBUILD_MODULES is set to 1 when you are building only modules
(a typical use case is "make modules").
It is more useful to set them to 'y' instead, so we can do
something like:
always-$(KBUILD_BUILTIN) += vmlinux.lds
This works equivalently to:
extra-y += vmlinux.lds
This allows us to deprecate extra-y. extra-y and always-y are quite
similar, and we do not need both.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/kbuild/makefiles.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/kbuild/makefiles.rst b/Documentation/kbuild/makefiles.rst index 3b9a8bc671e2..18ef339f687b 100644 --- a/Documentation/kbuild/makefiles.rst +++ b/Documentation/kbuild/makefiles.rst @@ -291,6 +291,10 @@ Example:: # arch/x86/kernel/Makefile extra-y += vmlinux.lds +extra-y is now deprecated because this is equivalent to: + + always-$(KBUILD_BUILTIN) += vmlinux.lds + $(extra-y) should only contain targets needed for vmlinux. Kbuild skips extra-y when vmlinux is apparently not a final goal. |