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Date: Fri, 25 Apr 2014 13:47:14 -0400
From: Tim Prince <n8tm AT aol DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: 64-bit vs. 32-bit
References: <CABn7SNaxsvGXsEjkQM6csfpbnBRRhds6g6ajQSy=MwErSLkx1A AT mail DOT gmail DOT com> <20140425173837 DOT GC346 AT ednor DOT casa DOT cgf DOT cx>
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On 4/25/2014 1:38 PM, Christopher Faylor wrote:
> On Fri, Apr 25, 2014 at 01:26:22PM -0400, Tom Szczesny wrote:
>> I have a 64-bit Windows laptop, and installed Cygwin several years ago.
>> I wish to verify that I did install the 64-bit installation.
>> I get the following results:
>>
>> cygcheck -V
>> cygcheck (cygwin) 1.7.15
>>
>> uname
>> CYGWIN_NT-6.1-WOW64
>>
>> If I did install the 64-bit version, when I rebuild my Linux app on
>> Cygwin, do I automatically get a 64-bit executable (that will not run
>> on a 32-bit Windows computer)?
> 1) No, you didn't install a 64-bit version of Cygwin.  "uname -a" should
> make that clear.  You'll need to instal a 64-bit version if that's what
> you want.
>
> 2) Cygwin doesn't build Linux apps.  If you have a cross-compiler then
> it won't automatically decide to build 64-bit Linux apps because you
> are on a 64-bit sytem.
>
>
There are cygwin 64- and 32-bit native compilers and mingw 32- and 
64-bit compilers on the setup.exe menu in case you mean to build for one 
of those targets.

-- 
Tim Prince


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