Sorry for the "-hdi" typo... As I said, I don't think anyone ever compiled and tested this on Windows, so I'm not surprised the binary fails for you. If you like to investigate it further, please go ahead! I might take a look myself in the future, but I'm terribly busy at the moment.

Christof

On 02.02.2020 19:44, ffdd cchh wrote:
Ok, I did Christof's step c) and copied those dummy functions (and basically commented out anything but a debug_post() inside "hidio_devices()" and "hidio_elements()", and indeed got a binary. But, it's no use.

I try to get some data on why it crashes but it just says 'segmentation fault':

```
camarahalac.1@ACD-NC054624 MINGW64 ~/Desktop
$ /c/Users/camarahalac.1/Downloads/pd-0.50-2/bin/pd.exe -d 4 -stderr -open /c/Users/camarahalac.1/Downloads/pd-0.50-2/extra/hidio/hidio-help.pd
Segmentation fault
```





On Sun, Feb 2, 2020 at 12:38 PM ffdd cchh <camaraf...@gmail.com <mailto:camaraf...@gmail.com>> wrote:

    You are right! I now have undefined references only on hidio.o:

    hidio.o: In function `hidio_write_event':
    Z:\Desktop\hidio/hidio.c:357: undefined reference to
    `hidio_write_event_symbols'
    Z:\Desktop\hidio/hidio.c:336: undefined reference to
    `hidio_write_event_ints'
    Z:\Desktop\hidio/hidio.c:347: undefined reference to
    `hidio_write_event_symbol_int'
    hidio.o: In function `hidio_setup':
    Z:\Desktop\hidio/hidio.c:643: undefined reference to `hidio_devices'
    Z:\Desktop\hidio/hidio.c:644: undefined reference to `hidio_elements'
    hidio.o:hidio.c:(.rdata$.refptr.hidio_elements[.refptr.hidio_elements]+0x0):
    undefined reference to `hidio_elements'
    hidio.o:hidio.c:(.rdata$.refptr.hidio_devices[.refptr.hidio_devices]+0x0):
    undefined reference to `hidio_devices'
    collect2.exe: error: ld returned 1 exit status
    make[1]: *** [Makefile:267: hidio.dll] Error 1
    make[1]: Leaving directory '/z/Desktop/hidio'
    make: *** [Makefile:303: all-recursive] Error 1




    On Sun, Feb 2, 2020 at 12:17 PM Martin Peach
    <chakekat...@gmail.com <mailto:chakekat...@gmail.com>> wrote:
    >
    > I'm not sure but I think -lhdi should be -lhid, since it's a
    human interface device library.
    > See
    
https://docs.microsoft.com/en-us/windows-hardware/drivers/hid/introduction-to-hid-concepts
    >
    > Martin
    >
    > On Sun, Feb 2, 2020 at 12:04 PM ffdd cchh <camaraf...@gmail.com
    <mailto:camaraf...@gmail.com>> wrote:
    >>
    >> Hi Martin, Christof,
    >>
    >> thanks both. Still no luck.
    >>
    >> I managed through steps a) b) and d), with the exception that I
    could not add "-lhdi", as it appears to not be installed here. Is
    that pointing to this:
    https://cran.r-project.org/web/packages/hdi/index.html ?
    >>
    >> The log now points to *many* undefined references on mostly
    hidio_windows.c and on hidio.c (which I suspect is my missing step
    c), for which I did not have time)
    >>
    >> I attach the log here again.
    >>
    >> I have hit a brick wall here so I will not pursue this further
    unless there are other instructions I can follow.
    >>
    >> Thanks for you help,
    >>
    >> Best,
    >>
    >> fd
    >>
    >> On Fri, Jan 31, 2020 at 10:52 PM Christof Ressi
    <i...@christofressi.com <mailto:i...@christofressi.com>> wrote:
    >>>
    >>> The order of .o files doesn't matter. It's shared and static
    libraries which sometimes have to be specified in a certain order.
    >>>
    >>> The actual problem was that
    >>>
    >>> a) hidio_windows.c used _WINDOWS instead of _WIN32 as a guard
    around the whole code, so hidio_windows.o was empty.
    >>>
    >>> b) then there was a wrong header (<ddk/hidsdi.h>  instead of
    <hidsdi.h>)
    >>>
    >>> c) some methods are not implemented, so I copied the dummy
    implementation from hidio_linux.c. It seems like those methods are
    only relevant for OSX.
    >>>
    >>> d) there were missing linker flags "-lhdi -lSetupAPI".
    >>>
    >>> Also, I couldn't get the autotools makefile to work, so I just
    compiled manually on the command line. Finally I got a binary :-)
    >>>
    >>> To be honest, I don't think that anyone ever compiled this
    code on Windows, so it is probably untested. Anyway, when I have
    time I can clean this up and make a PR (or just fork it). Then we
    probably need some testing before we upload it to Deken...
    >>>
    >>> Christof
    >>>
    >>> On 01.02.2020 02:50, Martin Peach wrote:
    >>>
    >>> Line 76 of the log:
    >>> gcc  -DPD -g -O2 -I/z/Desktop/pure-data/src  -mms-bitfields 
    -L/z/Desktop/pure-data/src -L/z/Desktop/pure-data/bin
    -L/z/Desktop/pure-data/obj   -s -shared -o hidio.dll hidio.o
    hidio_types.o   hidio_windows.o -L/src -L/bin -L/obj -lpd
    >>> hidio.o: In function `hidio_tick':
    >>> Z:\Desktop\hidio/hidio.c:513: undefined reference to
    `hidio_get_events'
    >>>
    >>> hidio_tick is in hidio.o, which has compiled successfully.
    >>> hidio_get_events is in hidio_windows.o, which also exists; but
    the linker is linking three .o files, and hidio_windows.o is the
    last one.
    >>> Perhaps switching hidio.o and hidio_windows.o in that gcc
    command will let the linker find the symbols before they are needed.
    >>>
    >>> Martin
    >>>
    >>>
    >>>
    >>> On Fri, Jan 31, 2020 at 5:29 PM ffdd cchh
    <camaraf...@gmail.com <mailto:camaraf...@gmail.com>> wrote:
    >>>>
    >>>> Hi Christof,
    >>>>
    >>>> Thanks! Yes, I found these threads on the list:
    >>>>
    >>>> https://lists.puredata.info/pipermail/pd-list/2019-11/126348.html
    >>>> https://lists.puredata.info/pipermail/pd-list/2019-10/126096.html
    >>>>
    >>>> But, there are still no Windows version of this external...
    >>>>
    >>>> Github issue is up: https://github.com/Benitoite/hidio/issues/2
    >>>>
    >>>> Hope something comes out of this thread! I am sure there are
    enough Windows users out there in need of some hid external.
    >>>>
    >>>> Best,
    >>>>
    >>>> f
    >>>>
    >>>>
    >>>> On Fri, Jan 31, 2020 at 4:57 PM Christof Ressi
    <i...@christofressi.com <mailto:i...@christofressi.com>> wrote:
    >>>>>
    >>>>> I remember a similar thread on the list a few months ago. I
    tried to compile it and gave up. The build system for Windows
    seems to be broken and needs to be fixed (and probably switched
    from automake to pd-lib-builder). Unfortunately, I don't have time
    right now to work on this, but you could file a bug report on the
    GitHub repo, so maybe the maintainer will do it.
    >>>>>
    >>>>> Christof
    >>>>>
    >>>>> On 31.01.2020 21:05, ffdd cchh wrote:
    >>>>>
    >>>>> Dear list,
    >>>>>
    >>>>> I need to use external controllers via USB with vanilla
    (say, a PS4 controller), and I have not found a compiled version
    of [hidio] for Windows. Please, let me know if there are
    ready-made options out there (feel free to change subject line if
    that thread goes wild).
    >>>>>
    >>>>> In the meantime, I am trying to compile [hidio] for Windows.
    I'm on Windows 10.0.18362, x64-based PC. I am using a MSYS
    terminal with MINGw64. I took the latest code from Benitoite's
    repository (https://github.com/Benitoite/hidio) and I am stuck
    with "undefined reference"s all over. I attach here the console log.
    >>>>>
    >>>>> I would very much welcome any idea on how to approach this
    so I can use vanilla with my students :)
    >>>>>
    >>>>> Best,
    >>>>>
    >>>>> f
    >>>>>
    >>>>>
    >>>>> _______________________________________________
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    >>>>
    >>>>
    >>>>
    >>>> --
    >>>> fdch.github.io <http://fdch.github.io>
    >>>> _______________________________________________
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    >>
    >> --
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