Java cannot load shared object library using JNI on OSX
I am trying to use JNI to join Java and C in the easiest way on my friend's 64-bit OS machine and I am getting this error. Everything is involved here:
test.java
public class test {
static {System.loadLibrary ("test");}
native void aaa ();
public static void main (String [] args) {
new test ();
}
public test () {
aaa ();
}
}
test.h
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class test */
#ifndef _Included_test
#define _Included_test
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: test
* Method: aaa
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_test_aaa
(JNIEnv *, jobject);
#ifdef __cplusplus
}
#endif
#endif
test.c
#include <stdio.h>
#include <jni.h>
#include "test.h"
JNIEXPORT void JNICALL Java_test_aaa
(JNIEnv *env, jobject obj) {
printf ("AWD");
}
Makefile
CC = gcc
CFLAGS = -Wall -ansi -pedantic -g3
default :
javac test.java
javah -jni test
gcc -c test.c -o test.o -I${HOME}/../../System/Library/Frameworks/JavaVM.framework/Versions/A/Headers/
gcc -shared -Wl,-install_name,libtest.so -o libtest.so test.o
I had to use -install_name instead of -soname because I read that OSX doesn't have -soname like Linux does.
Then i do
export LD_LIBRARY_PATH=.
java test
and i get
Exception in thread "main" java.lang.UnsatisfiedLinkError: no test in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1856)
at java.lang.Runtime.loadLibrary0(Runtime.java:845)
at java.lang.System.loadLibrary(System.java:1084)
at test.<clinit>(test.java:2)
So I really don't know what the problem is. I copied all files on Linux and changed the -install_name to -soname and changed the paths to jni.h and it works fine.
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