JNI dependent libraries

Question

I\'m running a library via JNI (I didn\'t write it), and internally it calls another DLL. I get an error saying \"Can\'t find dependent libraries\" unless I put the path of

Answer 1

I had a similar problem. My requirement was to load the following library in a windows environment:

System.loadLibrary("ibex-java");

In my case, I had configured the -Djava.library.path=C:\projetos\platform\windows\ibex to a folder where all required dlls were stored.

C:\projetos\platform\windows\ibex>dir
21/08/2020  14:49              .
21/08/2020  14:49              ..
21/08/2020  07:47              ibex
21/08/2020  14:49           128.108 ibex-java.dll
21/08/2020  14:49             8.554 ibex-java.dll.a
21/08/2020  14:49         6.582.641 ibex.dll
21/08/2020  14:49         5.577.792 ibex.dll.a
21/08/2020  07:47           938.157 libgcc_s_dw2-1.dll
21/08/2020  14:49         6.349.752 libibex.a
21/08/2020  07:47         1.508.122 libstdc++-6.dll

However when I tried to load this library the following error was thrown:

Caused by: java.lang.UnsatisfiedLinkError: C:\platform\windows\ibex\ibex-java.dll: Can't find dependent libraries

As we can see, all dependent dlls are in the same folder of the library path. However, the single line System.loadLibrary("ibex-java"); couldn't automatically load them. One option to solve this problem was to put the library path in the PATH environment variable of windows, but I didn't like this idea. In my case I find a better solution, find the DLLs dependencies and load these libraries by-hand. For example:

System.loadLibrary("libgcc_s_dw2-1");
System.loadLibrary("libstdc++-6");
System.loadLibrary("ibex");
System.loadLibrary("ibex-java");