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Date: Thu, 4 Jul 2013 12:49:15 +0300
From: "Michael S. Tsirkin" <mst@redhat.com>
Message-ID: <20130704094915.GA23677@redhat.com>
References: <20130704080607.GA25850@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH] Makefile: disable parallel build with dtc
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To: Peter Maydell <peter.maydell@linaro.org>
Cc: Anthony Liguori <aliguori@us.ibm.com>, qemu-devel@nongnu.org, Blue Swirl <blauwirbel@gmail.com>, Gerd Hoffmann <kraxel@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>

On Thu, Jul 04, 2013 at 10:17:46AM +0100, Peter Maydell wrote:
> On 4 July 2013 09:06, Michael S. Tsirkin <mst@redhat.com> wrote:
> > Sometimes I get this error when building with -j 4:
> > ar: two different operation options specified
> > make[1]: *** [libfdt/libfdt.a] Error 1
> > make: *** [subdir-dtc] Error 2
> >
> > dtc make does not seem to support parallel make.
> > Force non-parallel build to fix this.
> 
> So, this is the second time somebody's reported this, and
> I think it would be better to try to figure out what's
> going on. Can you report what the actual ar command is
> when run with V=1 ?

it stopped reproducing now :(

> Also, can you confirm that you haven't got an environment
> that sets ARFLAGS to something weird (including "") ?
> 
> thanks
> -- PMM

I can confirm that.