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Subject:	Re: Presence of cygwin64 elements in an existing Cygwin 32 install after updating
To:	cygwin AT cygwin DOT com
References:	<CAFWoy7G6qey3krstkgwYpjQYoxMejTF18Ds5B-vcA28OG4gU4A AT mail DOT gmail DOT com>
From:	Ken Brown <kbrown AT cornell DOT edu>
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Date:	Thu, 24 Aug 2017 10:21:44 -0400
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On 8/24/2017 9:36 AM, Keith Christian wrote:
> Some Cygwin programs are failing even after reboots, re-installing the
> faulty program, and the customary automatic rebasing (e.g. 'dig', Line
> 1 below) after a recent update:
> 
> Some cygwin64 packages were installed (see line 17 below (even though
> I am running *32* bit cygwin, installed using setup-*x86*.exe:
> 
> After the existing setup warned me that there was a newer one, I
> downloaded this one before continuing with the update.
> 
>      08/23/2017  04:10 PM           871,955 setup-x86.exe
> 
>      9afd6a83bbb7dbb55805ab113e1e618e *setup-x86.exe
> 
> Lines 1 - 9: After the update I noticed that 'dig' wasn't working
> properly (even after a reboot, and a reinstall of the bind-utils
> package, and the automatic rebase invoked by 'setup'.)
> 
> Lines 12 - 17: cygcheck showed the following note about a missing (64
> bit?) cygwin DLL.
> 
> Line 17 especially, why is there an 'x86_64' reference on a cygwin 32
> bit install?
> 
> Lines 20 - 29 show a number of cygwin64 references, 108 to be exact on Line 29:
> 
> Line 33 is additional evidence that this is the 32 bit setup program:
> 
> Lines 36 - 44 show more info about the setup.ini file.
> 
> 
>       1    dig +short -x 127.0.0.1
>       2          0 [main] dig (4552) C:\cygwin\bin\dig.exe: *** fatal
> error - cygheap base mismatch detected - 0x612E8408/0xBA8408.
>       3    This problem is probably due to using incompatible versions
> of the cygwin DLL.
>       4    Search for cygwin1.dll using the Windows Start->Find/Search facility
>       5    and delete all but the most recent version.  The most recent
> version *should*
>       6    reside in x:\cygwin\bin, where 'x' is the drive on which you have
>       7    installed the cygwin distribution.  Rebooting is also suggested if you
>       8    are unable to find another cygwin DLL.
>       9    Segmentation fault
>      10
>      11
>      12    grep "cygwin1\.dll"
> /var/kchristian/cygcheck/cygcheck_s_r_v_20170823_165156
>      13     3373k 2017/07/12 C:\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
>      14                      "cygwin1.dll" v0.0 ts=2017-07-12 09:53
>      15     3373k 2017/07/12 C:\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
>      16                      "cygwin1.dll" v0.0 ts=2017-07-12 09:53
>      17    Missing file:
> /usr/x86_64-pc-cygwin/sys-root/usr/bin/cygwin1.dll from package
> cygwin64
>      18
>      19
>      20    grep -n cygwin64 /etc/setup/installed.db
>      21    543:cygwin64 cygwin64-2.6.0-1.tar.bz2 1
>      22    544:cygwin64-binutils cygwin64-binutils-2.25-1.tar.bz2 0
>      23    545:cygwin64-binutils-debuginfo
> cygwin64-binutils-debuginfo-2.25-1.tar.bz2 1
>      24    546:cygwin64-bzip2 cygwin64-bzip2-1.0.6-2.tar.bz2 0
>      25    547:cygwin64-catgets cygwin64-catgets-1.1-2.tar.bz2 1
>      26
>      27
>      28    grep -cw cygwin64
> "http%3a%2f%2fcygwin.mirror.constant.com%2f/x86/setup.ini"
>      29    108
>      30
>      31
>      32    ls -l "http%3a%2f%2fcygwin.mirror.constant.com%2f/x86/setup.ini"
>      33    -rwx------+ 1 keith Domain Users 10666707 Aug 23 16:10
> http%3a%2f%2fcygwin.mirror.constant.com%2f/x86/setup.ini
>      34
>      35
>      36    head "http%3a%2f%2fcygwin.mirror.constant.com%2f/x86/setup.ini"
>      37    # This file was automatically generated at 2017-08-22 00:14:06 UTC.
>      38    #
>      39    # If you edit it, your edits will be discarded next time the file is
>      40    # generated.  See http://cygwin.com/setup.html for details.
>      41    release: cygwin
>      42    arch: x86
>      43    setup-timestamp: 1503360846
>      44    setup-version: 2.881
> 
> 
> Interested in how to remove the cygwin64 components from this cygwin
> 32 bit system so that failing Cygwin programs work properly.

The packages whose names start with "cygwin64" are x86 packages intended 
for cross-building 64-bit programs on 32-bit Cygwin.  If you don't want 
them, you can uninstall them in the usual way by running setup-x86.exe. 
I don't think they have anything to do with your problem.

Ken


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