linux-kernel - Re: [build fail] v6.11-rc2 from "ARM: 9404/1: arm32: enable HAVE_LD_DEAD_CODE_DATA

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Message-ID: <a65d0b09-466d-415f-9bd0-cbc5ff3539e7@gmail.com>
Date: Wed, 7 Aug 2024 21:06:15 +0530
From: Harith George <mail2hgg@...il.com>
To: "liuyuntao (F)" <liuyuntao12@...wei.com>, arnd@...db.de,
 linus.walleij@...aro.org, rmk+kernel@...linux.org.uk, ardb@...nel.org,
 harith.g@...fsemi.com
Cc: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [build fail] v6.11-rc2 from "ARM: 9404/1: arm32: enable
 HAVE_LD_DEAD_CODE_DATA_ELIMINATION"



On 07-08-2024 20:52, liuyuntao (F) wrote:
> Thanks, I reproduce the link error with toolchain
> gcc version 9.3.0
> GNU ld (GNU Binutils) 2.33.1
> 
> with same gcc version, just upgrading ld version to 2.36.1, it does not 
> segfault and build completes. there should be bugs in low version of ld,
> and the ".reloc  .text, R_ARM_NONE, ." triggers that.
> 
Thanks for confirming.

I guess we need to add something like
#if !CONFIG_CC_IS_GCC || CONFIG_LD_VERSION >= 23600
around the entry-armv.S changes and maybe select 
HAVE_LD_DEAD_CODE_DATA_ELIMINATION in arch/arm/Kconfig only if the same 
conditions are met ??

I had screwed up the CC list when I last replied and LAK list got 
changed to lak-join email id by mistake. Fixing that in this reply as well.

Thanks,
Warm Regards,
Harith