[PATCH] kbuild: show warning for 'make headers_check'

[PATCH] kbuild: show warning for 'make headers_check'

[Masahiro Yamada]

Since commit 7ecaf069da52 ("kbuild: move headers_check rule to
usr/include/Makefile"), the headers_check target is no-op.

This stub target is remaining here in case some scripts still invoke
'make headers_check'. In order to prompt people to remove stale code,
show a noisy warning message if used. The stub will be really removed
after the Linux 5.15 release.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 Makefile | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index f9b54da2fca0..a3336d9b4a22 100644
--- a/Makefile
+++ b/Makefile
@@ -1339,7 +1339,11 @@ headers: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts
 # Deprecated. It is no-op now.
 PHONY += headers_check
 headers_check:
-	@:
+	@echo >&2 "=================== WARNING ==================="
+	@echo >&2 "Since Linux 5.5, 'make headers_check' is no-op,"
+	@echo >&2 "and will be removed after Linux 5.15 release."
+	@echo >&2 "Please remove headers_check from your scripts."
+	@echo >&2 "==============================================="
 
 ifdef CONFIG_HEADERS_INSTALL
 prepare: headers
-- 
2.27.0

Re: [PATCH] kbuild: show warning for 'make headers_check'

[Masahiro Yamada]

On Tue, Mar 2, 2021 at 11:26 PM Masahiro Yamada <masahiroy@kernel.org> wrote:
>
> Since commit 7ecaf069da52 ("kbuild: move headers_check rule to
> usr/include/Makefile"), the headers_check target is no-op.
>
> This stub target is remaining here in case some scripts still invoke
> 'make headers_check'. In order to prompt people to remove stale code,
> show a noisy warning message if used. The stub will be really removed
> after the Linux 5.15 release.
>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ---

Applied to linux-kbuild.



>
>  Makefile | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/Makefile b/Makefile
> index f9b54da2fca0..a3336d9b4a22 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1339,7 +1339,11 @@ headers: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts
>  # Deprecated. It is no-op now.
>  PHONY += headers_check
>  headers_check:
> -       @:
> +       @echo >&2 "=================== WARNING ==================="
> +       @echo >&2 "Since Linux 5.5, 'make headers_check' is no-op,"
> +       @echo >&2 "and will be removed after Linux 5.15 release."
> +       @echo >&2 "Please remove headers_check from your scripts."
> +       @echo >&2 "==============================================="
>
>  ifdef CONFIG_HEADERS_INSTALL
>  prepare: headers
> --
> 2.27.0
>


-- 
Best Regards
Masahiro Yamada