linux-kernel - Re: [PATCH 04/10] Kconfig.debug: drop GCC 5+ version check for DWARF5

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Message-ID: <YTvzdrlrh2H98yjY@archlinux-ax161>
Date:   Fri, 10 Sep 2021 17:08:22 -0700
From:   Nathan Chancellor <nathan@...nel.org>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Joe Perches <joe@...ches.com>, Arnd Bergmann <arnd@...nel.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>, llvm@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 04/10] Kconfig.debug: drop GCC 5+ version check for DWARF5

On Fri, Sep 10, 2021 at 04:40:41PM -0700, Nick Desaulniers wrote:
> Now that the minimum supported version of GCC is 5.1, we no longer need
> this Kconfig version check for CONFIG_DEBUG_INFO_DWARF5.
> 
> Signed-off-by: Nick Desaulniers <ndesaulniers@...gle.com>

Reviewed-by: Nathan Chancellor <nathan@...nel.org>

> ---
>  lib/Kconfig.debug | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
> index ed4a31e34098..d566f601780f 100644
> --- a/lib/Kconfig.debug
> +++ b/lib/Kconfig.debug
> @@ -295,7 +295,7 @@ config DEBUG_INFO_DWARF4
>  
>  config DEBUG_INFO_DWARF5
>  	bool "Generate DWARF Version 5 debuginfo"
> -	depends on GCC_VERSION >= 50000 || (CC_IS_CLANG && (AS_IS_LLVM || (AS_IS_GNU && AS_VERSION >= 23502)))
> +	depends on !CC_IS_CLANG || (CC_IS_CLANG && (AS_IS_LLVM || (AS_IS_GNU && AS_VERSION >= 23502)))
>  	depends on !DEBUG_INFO_BTF
>  	help
>  	  Generate DWARF v5 debug info. Requires binutils 2.35.2, gcc 5.0+ (gcc
> -- 
> 2.33.0.309.g3052b89438-goog
> 
>