Re: Issues with JNI on Mono (IKVM Trunk)

This may be relevant: the JGLFW bindings were made with a different utility
than usual (and LWJGL just does everything differently always...).  The
utility is described here https://github.com/libgdx/libgdx/wiki/jnigen
Thanks again for your work on IKVM and your help on this; Google was not
turning up much of relevance when I started to debug...


On Wed, Jul 16, 2014 at 1:55 PM, Tommy Ettinger <[email protected]>
wrote:

> Ah, figured out how to load the config on Mono.  I think.  Unfortunately
> it gives a very different error: http://pastebin.com/GAsQyfA5
> The App.config is here
> https://github.com/tommyettinger/CommandersUnite/blob/master/CU/CU/App.config
>
>
> On Wed, Jul 16, 2014 at 1:30 PM, Tommy Ettinger <[email protected]>
> wrote:
>
>> My last message was too long for the list, so here it is with pastebin
>> links.
>> With those lines added to App.config, It gives the following output on
>> Windows 7 in Visual Studio's output window (and nothing new on Mono):
>> Visual Studio output: http://pastebin.com/6Jpi5FxV
>> Mono output: http://pastebin.com/BEMyAerk
>> Thanks for your speedy reply on this, IKVM worked brilliantly until I
>> tried to get it to run on Mono.  IKVM is a pretty incredible piece of
>> software.
>>
>>
>> On Wed, Jul 16, 2014 at 6:01 AM, Jeroen Frijters <[email protected]>
>> wrote:
>>
>>>  Hi Tommy,
>>>
>>>
>>>
>>> Can you try enabling JNI tracing by adding the following to your
>>> app.config:
>>>
>>>
>>>
>>> <system.diagnostics>
>>>
>>> <switches>
>>>
>>> <add name="jni" value="4" />
>>>
>>> </switches>
>>>
>>> </system.diagnostics>
>>>
>>>
>>>
>>> Regards,
>>>
>>> Jeroen
>>>
>>>
>>>
>>> *From:* Tommy Ettinger [mailto:[email protected]]
>>> *Sent:* Wednesday, July 16, 2014 14:00
>>> *To:* [email protected]
>>> *Subject:* [Ikvm-developers] Issues with JNI on Mono (IKVM Trunk)
>>>
>>>
>>>
>>> I've been struggling for the last two days to port my C# IKVM
>>> application that uses the Java library libgdx to Linux.  The application
>>> works just fine on Windows/.NET, but something is wrong with the linking
>>> for JNI code AFAICT.  Using libgdx you have a choice of backends for how to
>>> display graphics, one of which is LWJGL and one of which is JGLFW.  LWJGL
>>> failed on both 32- and 64-bit Linux (after I figured out how to get it to
>>> load its dependencies from the right folder) with an UnsatisfiedLinkError i
>>> n org.lwjgl.DefaultSysImplementation.getPointerSize()I , which (in the
>>> LWJGL source) is a native method with no body in the .java file.
>>>
>>> JGLFW failed on 64-bit Linux (haven't built it on 32-bit) with a
>>> different error, still in a native method:
>>>
>>> java.lang.UnsatisfiedLinkError: com/badlogic/jglfw/Glfw.glfwInitJni()Z
>>>
>>>           at cli.IKVM.Runtime.JNI$Frame.GetFuncPtr(Unknown Source)
>>>
>>> I have had issues setting LD_LIBRARY_PATH on this machine (a VM running
>>> Fedora 20, 64-bit; the VM is run by VirtualBox on Windows 7 64-bit), and I
>>> believe java.library.path is unset, but the libraries are all in the
>>> current folder (same as the exe).  My application is open source and the
>>> latest code is at https://github.com/tommyettinger/CommandersUnite/ and
>>> the only IKVM-specific code is in
>>> https://github.com/tommyettinger/CommandersUnite/blob/master/CU/CU/GameGDX.cs#L478
>>> .  I built gdx-jglfw.dll using the command:
>>>
>>> "%IKVM_HOME%/ikvmc.exe" -target:library -out:gdx-jglfw.dll
>>> -sharedclassloader gdx.jar gdx-natives.jar gdx-backend-jglfw.jar
>>> gdx-backend-jglfw-natives.jar
>>>
>>> where %IKVM_HOME% evaluated to the bin directory of the current
>>> trunk/head/master (latest) of the IKVM CVS on SourceForge (it actually may
>>> have been the latest nightly from the IKVM weblog, it is a version 8 or
>>> higher nightly).  That command was run on the libgdx 1.2.0 binary release.
>>>  I then extracted the dll and so files from the natives jars, copied them
>>> into the project, and set them to copy into the release directory.
>>>
>>> So my question is, is there a bug in my code, or in IKVM, here that can
>>> be fixed?  Does JNI work at all under Mono/Linux?
>>>
>>>
>>>
>>> --
>>>
>>> Thomas (Tommy) Ettinger
>>>
>>
>>
>>
>> --
>>
>> Thomas (Tommy) Ettinger
>>
>
>
>
> --
>
> Thomas (Tommy) Ettinger
>



-- 

Thomas (Tommy) Ettinger

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