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Re: [Qemu-devel] [PATCH v4 12/23] acpi: add rules to compile ASL source

From: Michael S. Tsirkin
Subject: Re: [Qemu-devel] [PATCH v4 12/23] acpi: add rules to compile ASL source
Date: Mon, 23 Sep 2013 16:39:10 +0300

On Mon, Sep 23, 2013 at 02:36:41PM +0200, Paolo Bonzini wrote:
> Il 22/09/2013 15:37, Michael S. Tsirkin ha scritto:
> > Detect presence of IASL compiler and use it
> > to process ASL source. If not there, use pre-compiled
> > files in-tree. Add script to update the in-tree files.
> > 
> > Note: distros are known to silently update iasl
> > so detect correct iasl flags for the installed version on each run as
> > opposed to at configure time.
> This is not any different from a C compiler, which is likely updated
> much much more often than iasl.

Yes but it's not a theoretical issue:
we did catch iasl changing flags semantics on the fly, once.

I think compilers don't do this as a norm :)

> However, I don't feel strongly at all
> about this.
> Paolo

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