UnsatisfiedLinkError When Loading Rust Shared Library

Cause: Java cannot find the Rust shared library file (e.g., .so, .dll, .dylib) because the file path is incorrect or the library name is misspelled.

Solution

  1. Specify Library Path and Name Correctly: Ensure that the shared library file is available in the system path or specified explicitly.
  2. Check System Compatibility: Ensure that the library file matches the OS format (e.g., .dll on Windows).

Example:

// Ensure correct file name for your OS
SymbolLookup lib = SymbolLookup.libraryLookup("libmylibrary.so", Arena.global());

Explanation and Solution:

Library Path Validation: Confirm that the library file path is correct, and the file exists. Specifying the full path or ensuring the library is on the system’s path will solve this issue.

Why It’s Tricky:

If Java cannot locate the Rust library, it throws a runtime error, which can be hard to trace if the path is only slightly incorrect.