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Date:   Tue, 7 Nov 2017 18:39:15 +0100
From:   Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
To:     Ralf Baechle <ralf@linux-mips.org>
Cc:     Matthew Fortune <Matthew.Fortune@imgtec.com>,
        "linux-mips@linux-mips.org" <linux-mips@linux-mips.org>,
        Waldemar Brodkorb <wbx@openadk.org>
Subject: Re: undefined reference to `__multi3' when building with gcc 7.x
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Hello,

On Fri, 18 Aug 2017 00:19:31 +0200, Ralf Baechle wrote:

> > As a workaround you may want to include a version of __multi3 in the kernel
> > until it is resolved.  
> 
> Yes, working on that.  This has been made harder by the fact that the
> implementation of __umulti3 is well hidden in the source :)  I now have
> functioning implementation of __multi3 but it's still too ugly to be
> committed to the kernel.
> 
> And while I agree it should be fixed in GCC at the same time the
> generated code while convoluted and unnecessarily slow appears to be
> correct so I think we should support this by adding a suitable __umulti3
> to the kernel code as you suggest.

Has there been some progress on this front? I'm willing to test patches
if needed.

Thanks!

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com