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Date: Tue, 3 Jul 2018 14:48:16 +0100
From: Ruslan Bukin <ruslan.bukin@cl.cam.ac.uk>
To: Mark Linimon <linimon@lonesome.com>
Cc: Ruslan Bukin <br@FreeBSD.org>, src-committers@freebsd.org,
 svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject: Re: svn commit: r335887 - head/share/mk
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References: <201807031051.w63ApxxC087145@repo.freebsd.org>
 <20180703105648.GA25479@lonesome.com>
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On Tue, Jul 03, 2018 at 10:56:48AM +0000, Mark Linimon wrote:
> On Tue, Jul 03, 2018 at 10:51:59AM +0000, Ruslan Bukin wrote:
> >   Add GCC 8.1.0 compiler warning flags.
> 
> I'm sorry, but that is a "what" not a "why".
> 
> As someone who tries to fix ports on tier-2, I really need to
> understand the "why".
> 

There are plenty of issues (see warning flags for earlier versions of GCC listed in the same file which are required for GCC 8.1 as well). I think enumeration of all the issues may take some time. You just comment some warning flags and try build world.

Ruslan