linux-kernel - Re: [PATCH v3] kbuild: use -fmacro-prefix-map for .S sources

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Message-ID: <1604929732138.17256@cisco.com>
Date:   Mon, 9 Nov 2020 13:48:52 +0000
From:   "Denys Zagorui -X (dzagorui - GLOBALLOGIC INC at Cisco)" 
        <dzagorui@...co.com>
To:     "masahiroy@...nel.org" <masahiroy@...nel.org>
CC:     "michal.lkml@...kovi.net" <michal.lkml@...kovi.net>,
        "linux-kbuild@...r.kernel.org" <linux-kbuild@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] kbuild: use -fmacro-prefix-map for .S sources

> Follow-up to a73619a845d5 ("kbuild: use -fmacro-prefix-map to make
> __FILE__ a relative path") commit. Assembler sources also use __FILE__
> macro so this flag should be also apllied to that sources.
>
> Signed-off-by: Denys Zagorui <dzagorui@...co.com>
> ---
>  Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/Makefile b/Makefile
> index ee2284a5cad2..81e480fc6805 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -946,7 +946,7 @@ KBUILD_CFLAGS   += $(call cc-option,-Werror=incompatible-pointer-types)
>  KBUILD_CFLAGS   += $(call cc-option,-Werror=designated-init)
>
>  # change __FILE__ to the relative path from the srctree
> -KBUILD_CFLAGS  += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
> +KBUILD_CPPFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
>
>  # ensure -fcf-protection is disabled when using retpoline as it is
>  # incompatible with -mindirect-branch=thunk-extern
> --
> 2.19.0.dirty

ping