linux-kernel - Re: [PATCH 1/2] Makefile: Fix distcc compilation with x86 macros

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Date:   Thu, 29 Nov 2018 09:43:10 -0700
From:   Logan Gunthorpe <logang@...tatee.com>
To:     Nadav Amit <namit@...are.com>
Cc:     Ingo Molnar <mingo@...nel.org>, Ingo Molnar <mingo@...hat.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>, X86 ML <x86@...nel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] Makefile: Fix distcc compilation with x86 macros



On 2018-11-28 6:31 p.m., Nadav Amit wrote:
>> On Nov 28, 2018, at 4:49 PM, Logan Gunthorpe <logang@...tatee.com> wrote:
>>
>>
>>
>> On 2018-11-28 5:38 p.m., Nadav Amit wrote:
>>> So what’s your take? Would you think this patch is still needed? Should it
>>> only be enabled automatically for distcc and not for distcc-pump?
>>
>> Not sure. The patch will probably slow things down a lot (seeing
>> assembly is always done locally and there are twice as many compile
>> steps) and will create some confusion once it's possible to disable it
>> for the new versions. Maybe hold off and see if anyone else complains?
>>
>> I don't really know how you'd detect whether pump is in use or not and
>> I'm uncertain as to whether any of the auto detection can actually be
>> made to be reliable.
> 
> A silly `$(CC) —version | grep pump ` test.

Actually I'm not sure that's going to work in all cases. If CC="distcc
gcc", then "$(CC) --version" just looks like "gcc --version"...

Logan