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Date:   Tue, 22 Mar 2022 10:42:33 +0100
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Subject: Re: hppa vDSO and compiler (non-)support
Content-Language: en-US
To:     Jiri Slaby <jirislaby@kernel.org>
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>
 <28696c20-21ad-b0ac-8093-4ce07225fcd8@kernel.org>
From:   Helge Deller <deller@gmx.de>
In-Reply-To: <28696c20-21ad-b0ac-8093-4ce07225fcd8@kernel.org>
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On 3/22/22 10:19, Jiri Slaby wrote:
> 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=3Dhppa-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=3Dhppa-suse-linux-"?
>>
>> Could you please try if this patch fixes it for you?
>
> Works like a charm:
> $ make V=3D1 O=3D../a/arch/parisc/ ARCH=3Dparisc -j6 drivers/tty/serial/=
mux.o
> ...
>>=C2=A0 hppa-suse-linux-gcc <flags deleted> -o drivers/tty/serial/mux.o /=
home/latest/linux/drivers/tty/serial/mux.c
>>=C2=A0 if hppa-suse-linux-objdump -h drivers/tty/serial/mux.o | ...; fi
>
> Thanks.

Great!
I've queued up a patch in for-next...

Helge


>
>> 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
>>
>> =C2=A0 # Set default 32 bits cross compilers for vdso
>> =C2=A0 CC_ARCHES_32 =3D hppa hppa2.0 hppa1.1
>> -CC_SUFFIXES=C2=A0 =3D linux linux-gnu unknown-linux-gnu
>> +CC_SUFFIXES=C2=A0 =3D linux linux-gnu unknown-linux-gnu suse-linux
>> =C2=A0 CROSS32_COMPILE :=3D $(call cc-cross-prefix, \
>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 $(foreach a,$(CC_ARCHES_32), \
>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 $(foreach s,$(CC_SUFFIXES),$(a)-$(s)-)))
>> @@ -52,7 +52,7 @@ export CROSS32CC
>> =C2=A0 # Set default cross compiler for kernel build
>> =C2=A0 ifdef cross_compiling
>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ifeq ($(CROSS_COMPILE),)
>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 CC_SUFFIXES =3D linux linux=
-gnu unknown-linux-gnu
>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 CC_SUFFIXES =3D linux linux=
-gnu unknown-linux-gnu suse-linux
>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 CROSS_COMPILE :=
=3D $(call cc-cross-prefix, \
>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 $(foreach a,$(CC_ARCHES), \
>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 $(foreach s,$(CC_SUFFIXES),$(a)-$(s)-)))
>