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Subject: Re: emacs-w32 not starting - libgd3 problem
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From: Marco Atzeri <marco.atzeri@gmail.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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