linux-kernel - Re: [PATCH] parisc: Makefile: explain that 64BIT requires both 32-bit and 64-bit compilers

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Message-ID: <7496ae20-7ed2-4823-8646-5e1b1b22284e@gmx.de>
Date: Fri, 25 Jul 2025 21:35:11 +0200
From: Helge Deller <deller@....de>
To: Randy Dunlap <rdunlap@...radead.org>, linux-kernel@...r.kernel.org
Cc: "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
 linux-parisc@...r.kernel.org
Subject: Re: [PATCH] parisc: Makefile: explain that 64BIT requires both 32-bit
 and 64-bit compilers

On 6/25/25 09:30, Randy Dunlap wrote:
> For building a 64-bit kernel, both 32-bit and 64-bit VDSO binaries
> are built, so both 32-bit and 64-bit compilers (and tools) should be
> in the PATH environment variable.
> 
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>
> Cc: Helge Deller <deller@....de>
> Cc: linux-parisc@...r.kernel.org

applied.

Thanks Randy!

Helge

> This wasn't obvious to me; I was seeing lots of Assembler errors
> when only the 64-bit tools were in $PATH.
> I didn't find a better place to document this.
> 
>   arch/parisc/Makefile |    4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
> 
> --- lnx-616-rc3.orig/arch/parisc/Makefile
> +++ lnx-616-rc3/arch/parisc/Makefile
> @@ -39,7 +39,9 @@ endif
>   
>   export LD_BFD
>   
> -# Set default 32 bits cross compilers for vdso
> +# Set default 32 bits cross compilers for vdso.
> +# This means that for 64BIT, both the 64-bit tools and the 32-bit tools
> +# need to be in the path.
>   CC_ARCHES_32 = hppa hppa2.0 hppa1.1
>   CC_SUFFIXES  = linux linux-gnu unknown-linux-gnu suse-linux
>   CROSS32_COMPILE := $(call cc-cross-prefix, \