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Date: Tue, 10 Oct 2017 23:14:28 +0200
From: Marius Strobl <marius@freebsd.org>
To: Mark Linimon <linimon@lonesome.com>
Cc: Gerald Pfeifer <gerald@pfeifer.com>, "A. Wilcox" <AWilcox@Wilcox-Tech.com>,
 freebsd-sparc64@FreeBSD.org, freebsd-arch@freebsd.org
Subject: Re: future of sparc64 (was: Making C++11 a hard requirement for
 FreeBSD)
Message-ID: <20171010211428.GA51868@alchemy.franken.de>
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On Sat, Oct 07, 2017 at 12:41:24PM -0500, Mark Linimon wrote:
> 
> All gccs > 4.9 fail to build.  Looking at the logs AFAICT the failure
> is a floating-point exception as soon as the first built binary is run
> during the internal testing.

The most plausible cause for that is executables and/or dynamic libraries
not installing the user trap handlers as specified by the libc 64 psABI,
i. e. not call __sparc_utrap_setup(). Do the ports GCCs use their own CRT
nowadays? Do they no longer link libc last? Please provide their linker
invocation. Also, please provide the backtrace of a minimal program
exhibiting that problem.

Marius