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Message-ID: <28696c20-21ad-b0ac-8093-4ce07225fcd8@kernel.org>
Date:   Tue, 22 Mar 2022 10:19:59 +0100
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Subject: Re: hppa vDSO and compiler (non-)support
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To:     Helge Deller <deller@gmx.de>
Cc:     linux-parisc@vger.kernel.org,
        Linux kernel mailing list <linux-kernel@vger.kernel.org>,
        =?UTF-8?Q?Martin_Li=c5=a1ka?= <mliska@suse.cz>,
        Andreas Schwab <schwab@linux-m68k.org>
References: <d2713ae1-0ca5-9e5a-b7d2-b7d0f1f5614a@kernel.org>
 <2e1f3e41-7097-e68d-d312-9319ad62565c@gmx.de>
 <d2a09bf3-9bd3-588a-99a1-598281d08678@kernel.org>
 <dd4e55aa-0b3e-6e18-7ec2-3bec02cafde0@kernel.org> <YjjJNb0D/b+ZXBVZ@ls3530>
From:   Jiri Slaby <jirislaby@kernel.org>
In-Reply-To: <YjjJNb0D/b+ZXBVZ@ls3530>
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Hello,

On 21. 03. 22, 19:51, Helge Deller wrote:
> * Jiri Slaby <jirislaby@kernel.org>:
>> On 09. 03. 22, 6:48, Jiri Slaby wrote:
>>> On 08. 03. 22, 15:51, Helge Deller wrote:
>>>> On 3/8/22 12:06, Jiri Slaby wrote:
>>>>> since the "parisc: Add vDSO support" commit, I can no longer
>>>>> cross-build a hppa kernel. I see two issues:
>>>>>
>>>>> 1) CROSS32_COMPILE detection doesn't work here, as openSUSE
>>>>> provides hppa-suse-linux-* binaries. It's easy to overcome by
>>>>> "CROSS32_COMPILE=hppa-suse-linux-"
>>>>
>>> ...
>>>> Would it make sense to add the detection for SUSE too?
>>
>> So, could 1) be fixed on the Kconfig side? Or should I (people running SUSE)
>> use "CROSS32_COMPILE=hppa-suse-linux-"?
> 
> Could you please try if this patch fixes it for you?

Works like a charm:
$ make V=1 O=../a/arch/parisc/ ARCH=parisc -j6 drivers/tty/serial/mux.o
...
 >  hppa-suse-linux-gcc <flags deleted> -o drivers/tty/serial/mux.o 
/home/latest/linux/drivers/tty/serial/mux.c
 >  if hppa-suse-linux-objdump -h drivers/tty/serial/mux.o | ...; fi

Thanks.

> diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile
> index 2a9387a93592..7583fc39ab2d 100644
> --- a/arch/parisc/Makefile
> +++ b/arch/parisc/Makefile
> @@ -42,7 +42,7 @@ export LD_BFD
> 
>   # Set default 32 bits cross compilers for vdso
>   CC_ARCHES_32 = hppa hppa2.0 hppa1.1
> -CC_SUFFIXES  = linux linux-gnu unknown-linux-gnu
> +CC_SUFFIXES  = linux linux-gnu unknown-linux-gnu suse-linux
>   CROSS32_COMPILE := $(call cc-cross-prefix, \
>   	$(foreach a,$(CC_ARCHES_32), \
>   	$(foreach s,$(CC_SUFFIXES),$(a)-$(s)-)))
> @@ -52,7 +52,7 @@ export CROSS32CC
>   # Set default cross compiler for kernel build
>   ifdef cross_compiling
>   	ifeq ($(CROSS_COMPILE),)
> -		CC_SUFFIXES = linux linux-gnu unknown-linux-gnu
> +		CC_SUFFIXES = linux linux-gnu unknown-linux-gnu suse-linux
>   		CROSS_COMPILE := $(call cc-cross-prefix, \
>   			$(foreach a,$(CC_ARCHES), \
>   			$(foreach s,$(CC_SUFFIXES),$(a)-$(s)-)))

-- 
-- 
js
suse labs