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-rw-r--r--Documentation/kbuild/makefiles.rst4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/kbuild/makefiles.rst b/Documentation/kbuild/makefiles.rst
index 38cc656fac20..8aef3650c1f3 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.