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Subject:	Re: Which is it -pc- or -unknown-
To:	cygwin AT cygwin DOT com
References:	<b0dab24e-629a-4d23-c199-69b60a98b9ad AT gmail DOT com> <59e7e340 DOT e9099d0a DOT ecab9 DOT 127a AT mx DOT google DOT com> <5e3588d9-d0a6-4181-54aa-56afa5082eab AT gmail DOT com> <e6342489-bc51-0ac7-df16-73ef8639ba91 AT cygwin DOT com> <bcfc8b60-f269-8647-297f-f4fa3fe58d7d AT gmail DOT com> <10f91c20-d6d0-0dc4-cd2e-f71b2489defd AT cygwin DOT com> <e86099e0-1e7c-1166-2fec-93d403106576 AT gmail DOT com> <193B1E2F-25B2-4C44-BC27-ADD19DD8CD43 AT solidrocksystems DOT com> <59c46d01-832a-357d-53b3-7cc8a7c26f1b AT gmail DOT com> <45b5c7da-e802-ae5f-9692-a9caf94fcda7 AT cygwin DOT com> <f75348d4-cb68-8224-761e-17ffa0a212ac AT gmail DOT com> <fcf80f2e-d44b-662c-1cea-edd159aff27e AT cygwin DOT com> <2e67e7e4-f689-164e-da78-712f60490e9b AT gmail DOT com> <07e896be-05ce-1c21-da25-c66487684bc0 AT cygwin DOT com> <0621b067-5960-80d6-5666-4d2248cbd7cf AT gmail DOT com>
Reply-To:	cygwin AT cygwin DOT com
From:	cyg Simple <cygsimple AT gmail DOT com>
Message-ID:	<9b92d95f-4987-d250-7338-9691a3d40929@gmail.com>
Date:	Fri, 20 Oct 2017 13:24:04 -0400
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On 10/20/2017 12:11 PM, cyg Simple wrote:
> On 10/20/2017 11:54 AM, Yaakov Selkowitz wrote:
>> On 2017-10-20 10:44, cyg Simple wrote:
>>> On 10/20/2017 11:24 AM, Yaakov Selkowitz wrote:
>>>> On 2017-10-20 08:28, cyg Simple wrote:
>>>>> On 10/19/2017 4:33 PM, Yaakov Selkowitz wrote:
>>>>>> 2) the output of config.guess is a default and does NOT reflect, or need
>>>>>> to match, our chosen triplet.  There is nothing to fix in config.guess.
>>>>>
>>>>> Fine, it doesn't have to match, why don't you want it to?
>>>>
>>>> Because there is no correlation, is completely normal, and therefore no
>>>> need to special case Cygwin.
>>>
>>> What is *normal* about it?  Just because other's do it?  I gave
>>> scenarios in the mail which you elided from your response which give
>>> credence to a reason to change it.
>>
>> You are still looking at these from the same perspective you were
>> yesterday.  Let me restate this one (hopefully last) time:
>>
>> Your assumption is that the default and chosen triplets must/should be
>> one and the same.  
> 
> No, I assume no such thing.
> 
>> They are not, they need not be, and we are far from
>> being alone in this regard.  Once you accept *that*, then the rest of
>> this will make sense.  Further insistence that they should be is
>> counter-productive at this point.
> 
> You still skirt a reasoning for it to be so.  They don't need to be but
> why aren't they?  You've failed to answer the question by assuming I
> need to be educated on how it is and refusing to give me a reason of why
> it is. I know that I can specify something other than the default.  I
> don't know why the default is not the same as the chosen.  You keep
> failing to answer that question.  Why does it *need* to stay -unknown-
> instead of -pc-?
> 

And to further my proposal that -pc- should be the correct config.guess
vendor I find the following comment in config.sub.

	# We use `pc' rather than `unknown'
	# because (1) that's what they normally are, and
	# (2) the word "unknown" tends to confuse beginning users.
	i*86 | x86_64)
	  basic_machine=$basic_machine-pc
	  ;;

I also find in the config.guess file the following filter for Linux on
x86_64.

    x86_64:Linux:*:*)
	echo ${UNAME_MACHINE}-pc-linux-${LIBC}
	exit ;;

-- 
cyg Simple

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