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POSystem.loadLibrary does not work. UnsatisfiedLinkError for the second lib in chain
 

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  1. POSystem.loadLibrary does not work. UnsatisfiedLinkError for the second lib in chain
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    <p>I have java program Client.class that uses cpp shared library libclient.so via JNI. libclient.so is built as shared and uses cpp shared library libhttp.so.</p> <p>libclient.so and libhttp.so are placed in folder <code>/home/client/lib64</code> <br>Client.class is placed in <code>/home/client/bin</code></p> <p>Client can load library with</p> <ol> <li>System.load and environment variable LD_LIBRARY_PATH</li> <li>System.loadLibrary and -Djava.library.path</li> </ol> <p>The first way works fine.</p> <p><code>export LD_LIBRARY_PATH = /home/client/lib64</code> <br></p> <p>java -classpath ./bin Client</p> <p>The secon way fails.</p> <p><code>java -classpath ./bin -Djava.library.path=./../lib64 Client</code> <br></p> <pre><code>java.lang.UnsatisfiedLinkError: /home/client/lib64/libclient.so: libhttp.so: cannot open shared object file: No such file or directory </code></pre> <p>When I put libhttp.so into /usr/lib64 the second way works fine.</p> <p><strong>Why libclient.so is looking for libhttp.so in /usr/lib64 if I use System.loadLibrary? How can I fix it without coping libhttp.so into /usr/lib64?</strong></p> <p><em>My loading code:</em></p> <pre><code> //Try load from -Djava.library.path boolean found = false; String lib = "client"; try { System.loadLibrary(lib); found = true; } catch (UnsatisfiedLinkError e) { e.printStackTrace(); } //Try load from LD_LIBRARY_PATH if (!found) { lib = "libclient.so"; String ld_lib_path = System.getenv("LD_LIBRARY_PATH"); String[] paths = ld_lib_path.split(":"); for(int i=0; i&lt;paths.length; i++) { String p = paths[i]; File x = new File(p, lib); if (x.exists()) { System.load(x.getAbsolutePath()); found = true; break; } } } </code></pre> <p>Additional information.</p> <p>If I test libclient.so with ldd then I see: libhttp.so => not found If I set export LD_LIBRARY_PATH = /home/client/lib64 then I see: libhttp.so => /home/client/lib64/libhttp.so</p>
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