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Problem with invoke call from Java
From: |
Olaf Lüke |
Subject: |
Problem with invoke call from Java |
Date: |
Thu, 05 Jun 2014 18:26:35 +0200 |
Hi,
Our project has the following general setup:
* Octave calls a Java method from a jar, which controls some hardware.
* Some time later the hardware gives information back to Java.
* Java then calls invoke (from OctaveReference) to give information from
the hardware back to Octave.
You can take a look at the project here:
http://www.tinkerforge.com/en/doc/Software/API_Bindings_MATLAB.html
The source itself is located here:
http://download.tinkerforge.com/bindings/matlab/tinkerforge_matlab_bindings_2_0_0.zip
I recently updated my Ubuntu box to 14.04 which updated my Octave from
version 2.6.4 to 2.8.1. With the new version the last part of our
approach doesn't work anymore. I tried lots of different configurations
and so on, every time the octave.jar internally calls doInvoke (which is
a native function of liboctinterp) we get the following exception:
java.lang.UnsatisfiedLinkError:
org.octave.Octave.doInvoke(I[Ljava/lang/Object;)V
at org.octave.Octave.doInvoke(Native Method)
at org.octave.OctaveReference.invoke(OctaveReference.java:54)
In theory this should mean that either the liboctinterp.so is not loaded
or the function doInvoke is not present in the lib. But as far as i can
tell it is loaded and the method is implemented properly.
I already tried to add a
static {
System.loadLibrary("octinterp");
}
in the Octave.java and recompiled the octave.jar. The liboctinterp does
load, but i still get the exception.
The problem is also present if i compile the latest version of Octave
from source myself (instead of using the Ubuntu package).
What could be the problem and what can i do to debug this?
Thanks!
Olaf Lüke
- Problem with invoke call from Java,
Olaf Lüke <=