netdev - Re: [iproute PATCH 1/3] Use C99 style initializers everywhere

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Message-ID: <20160617115753.6205562d@xeon-e3>
Date:	Fri, 17 Jun 2016 11:57:53 -0700
From:	Stephen Hemminger <shemming@...cade.com>
To:	Nicolas Dichtel <nicolas.dichtel@...nd.com>
CC:	Daniel Borkmann <daniel@...earbox.net>, Phil Sutter <phil@....cc>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"julien.floret@...nd.com" <julien.floret@...nd.com>
Subject: Re: [iproute PATCH 1/3] Use C99 style initializers everywhere

On Fri, 17 Jun 2016 16:58:14 +0000
Nicolas Dichtel <nicolas.dichtel@...nd.com> wrote:

> Le 17/06/2016 18:46, Daniel Borkmann a écrit :
> > On 06/17/2016 06:34 PM, Stephen Hemminger wrote:
> >> On Fri, 17 Jun 2016 16:09:20 +0000
> >> Daniel Borkmann <daniel@...earbox.net> wrote:
> >>
> >>> Please have a look at commit 8f80d450c3cb ("tc: fix compilation with old gcc
> >>> (< 4.6)") ...
> >>>
> >>> Your changes effectively revert them again. Here, and some other parts of the
> >>> bpf frontend
> >>> code bits.
> >>
> >> GCC 4.6 is 3 years old. So perhaps it is time to move on.
> >> Maybe add a GCC version check in the makefile, to fail cleanly.
> > 
> > Well, you don't have to ask me but rather the patch submitters (Cc).
> > 
> > I haven't used RHEL in quite a while, but I could imagine it might
> > be related to built it there perhaps.
> Yes. For some specific arch, we have only old toolchains.
> 
> The rule was always to be backward compatible with old kernels. It implies to
> also support the compilation with old toolchains ;-)

It makes sense that if you can build a kernel with old toolchain, that
iproute2 needs to be buildable as well.

The current kernels are documented to require 3.2 or later.