loadlib4j

Little helper class for testing the loading of native libraries in Java.

It simply uses the java.lang.System.loadLibrary(String) call to load the library.

Usage

Command-line

The following command tries to load the libmkl_rt.so library on Linux, which has to be on the path defined by LD_LIBRARY_PATH:

java -jar loadlib4j-0.0.1.jar libmkl_rt.so

The output on stdout will be something like this:

libmkl_rt.so: false
libmkl_rt: false
mkl_rt: true

As you can see, loadlib4j also tries the library name without extension and lib prefix. In the above example, the test succeeds with mkl_rt.

Java

The same example in Java:

import com.github.fracpete.loadlib4j.Main;
import java.util.Map;
...
// the libraries to test
String[] libs = new String[]{"libmkl_rt.so"};
Main test = new Main();
Map<String,Boolean> result = test.testLoading(libs);
// do something with the results, eg output them
for (String lib: result.keySet()) {
  System.out.println(lib + " -> " + result.get(lib));
}

In this case, the output will be something like this:

libmkl_rt.so -> false
mkl_rt -> false
libmkl_rt -> false

Releases

• 0.0.1

Maven

Use the following dependency to include the library in your Maven project:

    <dependency>
      <groupId>com.github.fracpete</groupId>
      <artifactId>loadlib4j</artifactId>
      <version>0.0.1</version>
    </dependency>