From: Michal Marek <mmarek@suse.com>
To: Joe Perches <joe@perches.com>,
Brian Norris <computersforpeace@gmail.com>,
Michael Ellerman <mpe@ellerman.id.au>
Cc: Anton Blanchard <anton@au1.ibm.com>,
Ian Munsie <imunsie@au1.ibm.com>,
Michael Neuling <mikey@neuling.org>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: Build failure: -Wno-unused-const-variable DNE on old GCC
Date: Thu, 7 Jan 2016 20:44:38 +0100 [thread overview]
Message-ID: <568EC026.2020207@suse.com> (raw)
In-Reply-To: <1452195444.4028.21.camel@perches.com>
Dne 7.1.2016 v 20:37 Joe Perches napsal(a):
> On Thu, 2016-01-07 at 10:54 -0800, Brian Norris wrote:
>> Hi,
>>
>> I'm using a GCC 4.6.3 compiler for some compile tests, and I noticed
>> that commit 2cd55c68c0a4 ("cxl: Fix build failure due to -Wunused-variable
>> behaviour change") breaks my builds, because the
>> -Wno-unused-const-variable doesn't exist on GCC 4.6.3.
>>
>> drivers/misc/cxl/base.c: At top level:
>> cc1: error: unrecognized command line option "-Wno-unused-const-variable" [-Werror]
>>
>> Any thoughts on how to best fix this? I'd like not to have to scrounge
>> up a new cross compiler just for build tests.
>
> drivers/misc/cxl/Makefile:ccflags-y := -Werror -Wno-unused-const-variable
>
> You could take that -Wno-unused-const-variable out of the
> Makefile or maybe add something like:
>
> $(call cc-ifversion, -ge, 0530, -Wno-unused-const-variable)
>
> or whatever gcc version actually added that unused-const-variable check
We have cc-disable-warning for this.
Michal
next prev parent reply other threads:[~2016-01-07 19:44 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-07 18:54 Build failure: -Wno-unused-const-variable DNE on old GCC Brian Norris
2016-01-07 19:37 ` Joe Perches
2016-01-07 19:44 ` Michal Marek [this message]
2016-01-07 19:57 ` Joe Perches
2016-01-07 20:18 ` Brian Norris
2016-01-07 20:38 ` [PATCH] misc: cxl: fix build for GCC 4.6.x Brian Norris
2016-01-08 2:12 ` Michael Ellerman
2016-01-30 14:20 ` Build failure: -Wno-unused-const-variable DNE on old GCC Maciej W. Rozycki
2016-01-30 17:37 ` Joe Perches
2016-01-07 20:25 ` Arnd Bergmann
2016-01-07 22:51 ` Daniel Axtens
2016-01-07 23:02 ` Brian Norris
2016-01-08 1:31 ` Ian Munsie
2016-01-08 2:07 ` Brian Norris
2016-01-08 2:16 ` Michael Ellerman
2016-01-08 10:14 ` David Laight
2016-01-08 10:14 ` David Laight
2016-01-08 1:33 ` Ian Munsie
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