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Re: [Qemu-devel] [PATCH] configure: some fixes for OpenBSD


From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH] configure: some fixes for OpenBSD
Date: Fri, 24 Aug 2012 13:56:31 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:14.0) Gecko/20120717 Thunderbird/14.0

Il 24/08/2012 11:55, Peter Maydell ha scritto:
>> > OpenBSD's uname works as expected with the -s flag so remove the special
>> > handling when determining the target OS. Use arch -s to retrieve the
>> > hardware architecture as uname -m will return the meta architecture
>> > instead of the hardware architecture (.e.g. macppc vs powerpc).
> I'm afraid I think this patch is moving in the wrong direction.
> Wherever possible we should be using compiler checks like check_define,
> not looking at the output of 'uname' and the like. The former will
> work when cross compiling, and the latter will give the wrong answers.
> In some places we have that kind of 'look at uname/etc' check but
> we should be trying to reduce and eliminate it where possible.

Right, we should support GNU triplets and a --host argument, and replace
uname checks with pattern matching on the triplet.

Paolo



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