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Date: Wed, 22 May 2013 12:42:10 +0300
From: "Michael S. Tsirkin" <mst@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH] makefile: detect corrupted elf files
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To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>, Anthony Liguori <aliguori@us.ibm.com>, qemu-devel@nongnu.org, Markus Armbruster <armbru@redhat.com>, Luiz Capitulino <lcapitulino@redhat.com>, Blue Swirl <blauwirbel@gmail.com>

On Wed, May 22, 2013 at 11:22:52AM +0200, Paolo Bonzini wrote:
> Il 22/05/2013 10:52, Michael S. Tsirkin ha scritto:
> > The fix is simple here: don't use ccache.  I don't.
> > 
> > In fact, from what I saw people use ccache to work around makefile bugs,
> > so they can do make clean; make and have it finish quickly.
> > 
> > Any other examples?
> 
> Testing configure patches should be done (also) from a clean build
> directory, for example.
> 
> Paolo

In fact, relying on make clean for testing the build
system is a mistake.  It's easy for it to forget to
remove some temporary file. You really should do
a clean clone.

But testing is a completely separate issue IMO,
I'm not trying to fix that, just reduce the chance
of a failed or corrupted build.

-- 
MST