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Subject: Re: emacs-w32 not starting - missing dependency?
To: cygwin AT cygwin DOT com
References: <966a14c2-ee69-7d3d-800e-a4f9f62a3ec9 AT gmail DOT com> <b3b9e712-32d1-59ca-d549-9b461865a6a6 AT cornell DOT edu> <f9f0713e-b151-6716-e5ee-6225716d595e AT cornell DOT edu> <dc6c9caf-5227-c64f-8c67-6b3b9c5c85e8 AT cornell DOT edu> <69ab42c7-0c3b-e8ce-978f-77c52b8c1a56 AT cornell DOT edu> <b23dbc5b-aa2e-7757-6a77-30524ee9d8d1 AT gmail DOT com>
From: Ken Brown <kbrown AT cornell DOT edu>
Message-ID: <6c85acfc-dec8-e215-8519-94884190b198@cornell.edu>
Date: Sat, 20 Aug 2016 12:54:28 -0400
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On 8/20/2016 9:41 AM, Marco Atzeri wrote:
> On 20/08/2016 04:52, Ken Brown wrote:
>> On 8/19/2016 4:03 PM, Ken Brown wrote:
>>> On 8/19/2016 11:22 AM, Ken Brown wrote:
>>>> On 8/19/2016 9:55 AM, Ken Brown wrote:
>>>>> On 8/19/2016 6:27 AM, Peter Hull wrote:
>>>>>> Hi all,
>
>>> The problem turns out to be related to the recent update of libgd3.
>>> Reverting to the previous version fixes it.
>>>
>>> Notice that cygMagickCore-6.Q16-2.dll, which occurs in the error dialog
>>> above, depends on cyggd-3.dll:
>>>
>>> $ cygcheck /usr/bin/cygMagickCore-6.Q16-2.dll | grep cyggd-3
>>>       C:\cygwin\bin\cyggd-3.dll
>>>
>>> Marco, is it possible that the libgd3 update requires a rebuild of
>>> ImageMagick?
>>
>> Or maybe the issue is that the latest build of gd should have had an ABI
>> bump.  Volker?
>>
>> Ken
>>
>
> It seems more a libgd3 build problem.
> Specially if it happens only on 32bit and not on 64bit.

The difference between 32-bit and 64-bit is due to differences in 
ImageMagick on the two platforms.

On 32-bit, as I showed in an earlier message, I get:

$ objdump -p /usr/bin/cygMagickCore-6.Q16-2.dll
[...]
         DLL Name: cyggd-3.dll
         vma:  Hint/Ord Member-Name Bound-To
         48ee2c      8  WebPDecode
[...]

On 64-bit, I get:

$ objdump -p /usr/bin/cygMagickCore-6.Q16-2.dll
[...]
         DLL Name: cygwebp-5.dll
         vma:  Hint/Ord Member-Name Bound-To
[...]
         48096c    271  WebPDecode
[...]

Moreover, libMagickCore6_2 depends on libgd3 on 32-bit but not 64-bit. 
So it seems that ImageMagick needs to be rebuilt on 32-bit so as to 
remove this dependency.

Ken

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