Re: Issues with JNI on Mono (IKVM Trunk)

You should really ask on the Mono list about this. I don't know enough about Mono on Linux, but this looks seriously broken.

> -----Original Message-----
> From: Tommy Ettinger [mailto:[email protected]]
> Sent: Wednesday, July 16, 2014 22:56
> To: Jeroen Frijters
> Cc: [email protected]
> Subject: Re: [Ikvm-developers] Issues with JNI on Mono (IKVM Trunk)
> 
> 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.c
> onfig
> 
> 
> On Wed, Jul 16, 2014 at 1:30 PM, Tommy Ettinger
> <[email protected] <mailto:[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]
> <mailto:[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]
> <mailto:[email protected]> ]
> 		Sent: Wednesday, July 16, 2014 14:00
> 		To: [email protected] <mailto:ikvm-
> [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 in
> 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/GameG
> DX.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
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