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Date: Sat, 27 Jul 2013 09:28:32 +0400
From: LRN <lrn1986 AT gmail DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: please update the supported Cygwin package list to be distinct for 32-bit, 64-bit or both; and help on how install both in a merged fashion
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On 27.07.2013 09:17, Kenneth Wolcott wrote:
> On Fri, Jul 26, 2013 at 9:42 PM, marco atzeri <marco DOT atzeri AT gmail DOT com> wrote:
>> Il 7/27/2013 5:18 AM, Kenneth Wolcott ha scritto:
>>
>>> Hi;
>>>
>>> please update the supported Cygwin package list to be distinct for
>>> 32-bit, 64-bit or both; and help on how install both in a merged
>>> fashion
>>
>>
>> there is no merged way.
>> The 32bit and the 64bit could be installed in different directory
>> but NOT in the same one.
> 
> Hi Marco;
> 
>   Thanks for your reply.
> 
>   I guess I will somehow modify my PATH so that I have
> /cygdrive/c/cygwin64/usr/bin and /cygdrive/c/cygwin32/usr/bin
> (although I don't think that will work exactly like that).  Some fstab
> magic?  Some symlink magic?
> 
>   I will continue experimenting.

Try this:
run %ComSpec%

> mklink /D %SystemRoot%\System32\cygwin c:\cygwin64
> mklink /D %SystemRoot%\SysWOW64\cygwin c:\cygwin32

Then edit your user envrionment valriable table and add
%SystemRoot%\System32\cygwin\bin to PATH.

This way you will run 32-bit cygwin programs from 32-bit programs, and
64-bit programs from 64-bit programs.

That is, if you start c:\windows\system32\cmd.exe, it'll run 64-bit
apps, while c:\windows\syswow64\cmd.exe will only run 32-bit apps.

Obviously, you need to set up symlinks as Administrator, or give
yourself the SeCreateSymbolicLinkPrivilege privilege. Changing the
contents of system directories might also require you to be the
Administrator (not sure).

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