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From:	Ken Brown <kbrown AT cornell DOT edu>
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Date:	Thu, 19 Oct 2017 10:18:07 -0400
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On 10/19/2017 9:19 AM, cyg Simple wrote:
> On 10/18/2017 6:58 PM, JonY wrote:
>> I agree with Yaakov, why does it need to change?
>>
> 
> See my response to Yaakov.  If you supply explicit host and build to
> configure it does not work.

So don't do that.  Specifying host is for cross-compilation.  Specifying 
build without host is for overriding the result of config.guess (never 
necessary on Cygwin).  See

 
https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Specifying-Target-Triplets.html

In particular:  "If you mean to override the result of config.guess, use 
--build, not --host, since the latter enables cross-compilation."

Ken

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