[PD] Externals built with MSYS2/MinGW won't load

[Fred Jan Kraan]

Hi Christof,

> I should add that I followed the steps given here:
>
> https://lists.puredata.info/pipermail/pd-list/2007-06/051560.html

2007 is quite a long time ago. I have success with this description: 
http://puredata.info/docs/developer/WindowsMinGW, but this is 32-bits. 
Is there a special reason for compiling for 64-bits? I noticed 32-bits 
excutables works ok on a 64-bits Windows. And all externals at deken are 
32-bits...
>
> However, "-export_dynamic" gave me:
>
> C:\msys64\mingw32\bin\ld.exe: warning: cannot find entry symbol xport_dynamic; defaulting to 10001000
>
> trying "-E" and "--export-dynamic":

Some time ago the gmu compiler switched to '--export-dynamic' for this 
option.
>
> C:\msys64\mingw32\bin\ld.exe: warning: --export-dynamic is not supported for PE targets, did you mean --export-all-symbols?
>
>
> so I tried with "--export-all-symbols" and this worked for obj1.c and obj2.c. I can't, however, see why it doesn't work for obj3.c as the difference to obj2.c is rather marginal (adds an outlet and a state variable).
>
> Any hints are greatly appreciated!

About the previous errors; make really dislikes spaces in paths. Try it 
with paths without spaces.

Greetings & success,

Fred Jan
>
>
>> Gesendet: Donnerstag, 07. April 2016 um 02:22 Uhr
>> Von: "Christof Ressi" <christof.ressi at gmx.at>
>> An: Pd-List <pd-list at lists.iem.at>
>> Betreff: [PD] Externals built with MSYS2/MinGW won't load
>>
>> Dear list,
>>
>> I tried to compile the test externals in doc/6.externs on Windows 7 from the command line using MSYS2/MinGW.
>> I put everything (source files, m_pd.h and pd.dll) in one folder for the sake of convenience.
>>
>> I compile with
>> $ gcc -c obj1.c -o obj1.o
>> and link with
>> $ ld --export-all-symbols -shared -o test-obj3.dll obj3.o pd.dll
>>
>> compiling and linking works without any errors or warnings.
>> test-obj1 and test-obj2 seem to load and work fine in Pd, but for test-obj3 Pd console tells me:
>>
>> "C:\\Program Files (x86)\\pd vanilla\\extra\\stuff\\test-obj3.dll: couldn't load"
>>
>> The same thing happens when I try to build test-obj4, test-obj5 and test-dspobj~.
>> What could be the problem? I took the source files as they were and built all objects the exact same way...
>>
>> Many thanks in advance!
>>
>>
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>
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