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    <p>The reason for this is that libclient.so is loaded from your JVM, which looks in <code>java.library.path</code>. However, when libclient.so tries to load libhttp.so, it knows nothing about Java and just uses the regular Linux way of loading shared libraries (the dynamic linker <code>ld.so</code>), which looks in <code>LD_LIBRARY_PATH</code> and some common directories like <code>/usr/lib64</code>.</p> <p>I would probably go with using <code>LD_LIBRARY_PATH</code> set from a start script of your Java application. If you don't want to use a start script, you could in theory set <code>LD_LIBRARY_PATH</code> from within the process itself. However, Java does not allow to do this (there is only <code>System.getenv()</code>, not <code>System.setenv()</code>), so you would need to write a small C library that is called from Java and calls <a href="http://man7.org/linux/man-pages/man3/putenv.3.html" rel="noreferrer"><code>putenv()</code></a> setting <code>LD_LIBRARY_PATH</code>.</p> <p>If you build <code>libclient.so</code> itself, you can use the <code>-rpath</code> linker flag to specify a path where the dynamic linker should look for further required libraries. Be careful if you specify a relative path here, it will interpreted as relative to the current working directory of the running application, not relative to the location of <code>libclient.so</code>. To achieve this, you need to use <code>$ORIGIN</code> as argument for <code>-rpath</code> and be careful that your shell does not expand this.</p> <p>So, if you want to have <code>libclient.so</code> and <code>libhttp.so</code> in the same directory, you need to use</p> <pre><code>-rpath '$ORIGIN' </code></pre> <p>as argument to the linker when building <code>libclient.so</code>. If you do not call the linker directly but let your compiler call it, you need to add the following to your compiler's command line:</p> <pre><code>-Wl,-rpath,'$ORIGIN' </code></pre> <p>More information about this can be found in the <a href="http://linux.die.net/man/8/ld.so" rel="noreferrer">man page for <code>ld.so</code></a>.</p>
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