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Subject:	Re: Which is it -pc- or -unknown-
To:	cygwin AT cygwin DOT com
References:	<29b66287-6bd7-4e82-b35d-12a735c2070b AT gmail DOT com> <2a7bbdb0-1a76-690f-0a2a-1f64eb612df4 AT SystematicSw DOT ab DOT ca>
Reply-To:	cygwin AT cygwin DOT com
From:	cyg Simple <cygsimple AT gmail DOT com>
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Date:	Tue, 17 Oct 2017 17:31:10 -0400
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On 10/17/2017 3:45 PM, Brian Inglis wrote:
> On 2017-10-17 13:16, cyg Simple wrote:
>> The config.guess file[1] is confused.
>>
>> 840    i*:CYGWIN*:*)
>> 841	echo ${UNAME_MACHINE}-pc-cygwin
>> 842	exit ;;
>> -----
>> 870    amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
>> 871	echo x86_64-unknown-cygwin
>> 872	exit ;;
>>
>> The GCC executable is x86_64-pc-cygwin-gcc.exe but config.guess on my
>> system gives x86_64-unknown-cygwin so specifying a fully qualified host
>> doesn't find the executable file.  So which should it be?
>>
>> [1]http://git.savannah.gnu.org/cgit/config.git/tree/config.guess?id=c003e5cb947924ca5edd25c3b840aaa373c66b28
> 
> That part of the triplet is defined as vendor, so it was probably initially
> Intel, then compatibles came out and that was genericized to PC, then someone
> objected and discussed and came up with Unknown, rather than say Any or None.
> It may reflect development ages of projects, autotools, defaults on projects, or
> project politics.
> Some projects still use PC, which may be a project override, others use Unknown,
> which should be the default in current releases of autotools.
> 

So config.guess needs to change, correct?  I thought the I had
remembered the discussion that it should be -unknown- for Cygwin.  But
the GCC distribution is giving us -pc- instead which means the
maintainer specified the target as such.  That needs to change as well.

I'm on x86_64 I bet x86 will be -pc- from config.guess just by the way
it's coded.  Confusing!

-- 
cyg Simple

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