Briefly, I am trying to call a native method under Linux. I have a
decent understanding of the JNI, and have gotten my code to load under
windows, but am unable to load the shared library under Linux. Other
relevant details include my system profile: Slackware, libc.so.5, JDK 1.1.6v5
As I understand it, the process is:
1) Write your java file, declaring native methods
2) Run javah on the file to get your headers
3) Implement the native methods in (my case in) C++
4) Compile the C++ code to object files
5) Link the object files into a shared library (are the following
compiler options sufficient?)
gcc -lm -shared -Wl,-soname,libreceng.so -o libreceng.so lots_of_files.o
I am currently not interested in putting version numbers on my shared
library, is that necessary?
6) Put the shared library in your shared library path. Where is this
path define, exactly? I'm using tcsh, and I presume that $LPATH is the
path I'm interested in.
7) Run your java.
--------------------------------------
At step 7 I get the following error:
matsakis@natural-log>av index.html
File not found (libreceng.so)
Exception occurred during event dispatching:
java.lang.UnsatisfiedLinkError: no receng in shared library path
at java.lang.Runtime.loadLibrary(Runtime.java)
at java.lang.System.loadLibrary(System.java)
at NLI.RecEng.<init>(Demo.java:87)
at NLI.Demo.evaluate(Demo.java:70)
at NLI.Input_Panel.handleEvent(Input_Panel.java:38)
at java.awt.Component.postEvent(Component.java:1986)
at java.awt.Component.postEvent(Component.java:1996)
at java.awt.Component.postEvent(Component.java:1996)
at java.awt.Component.dispatchEventImpl(Component.java:1793)
at java.awt.Component.dispatchEvent(Component.java:1708)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:81)
Any suggestions?
Nick Matsakis
