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Subject:	Re: emacs-w32 not starting - libgd3 problem
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> <6c85acfc-dec8-e215-8519-94884190b198 AT cornell DOT edu>
From:	Marco Atzeri <marco DOT atzeri AT gmail DOT com>
Message-ID:	<91f48fa5-db3a-959c-5cb3-20b8df3a2791@gmail.com>
Date:	Sun, 21 Aug 2016 17:24:55 +0200
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On 20/08/2016 18:54, Ken Brown wrote:
> 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,
>>

>>
>> 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
>

Hi Ken,
the 32bit depends on both

/usr/bin/cyggd-3.dll  =>  libgd3-2.1.1-2
/usr/bin/cygwebp-5.dll  =>  libwebp5-0.4.4-1

the 64 bit is missing  the first.
So in theory I should rebuild the 64 one to include the libgd3
dependency.

You can verify with
objdump -x  cygMagickCore-6.Q16-2.dll|grep DLL |sort

The libgd3-2.1.1-2 has on both 32 and 64 bit

  $ objdump -x cyggd-3.dll |grep WebP
         [   8] WebPDecode
         [   9] WebPEncode
         [  10] WebPGetInfo
         [  11] WebPGetPSNR

So before my rebuild we need to understand what's happened to
libgd3.

Regards
Marco

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