Unable to use with GraalVM Native Image

[xhyrom]

When attempting to use jnr/jffi with a GraalVM native image, I encounter an UnsatisfiedLinkError when loading jnr.ffi.provider.jffi.Provider. The issue does not occur when running using JVM. I use this library with https://github.com/lmdbjava/lmdbjava.

Error Message:

Exception in thread "main" java.lang.UnsatisfiedLinkError: could not load FFI provider jnr.ffi.provider.jffi.Provider
    at jnr.ffi.provider.InvalidProvider$1.loadLibrary(InvalidProvider.java:49)
    at jnr.ffi.LibraryLoader.load(LibraryLoader.java:420)
    ...
Caused by: java.lang.UnsatisfiedLinkError: could not get native definition for type `POINTER`, original error message follows: null
    at com.kenai.jffi.Type$Builtin.lookupTypeInfo(Type.java:253)
    ...

GraalVM Proxy and Reflection Configuration:
proxy-config:

[
  {
    "interfaces": [
      "org.lmdbjava.Library$Lmdb",
      "jnr.ffi.provider.LoadedLibrary"
    ]
  }
]

reflection-config:

[
  {
    "name": "jnr.ffi.provider.jffi.Provider",
    "allDeclaredConstructors": true,
    "allDeclaredMethods": true,
    "allDeclaredFields": true
  },
  {
    "name": "jnr.ffi.LibraryLoader",
    "allDeclaredFields": true,
    "allDeclaredMethods": true,
    "allDeclaredConstructors": true
  },
  {
    "name": "jnr.ffi.provider.FFIProvider",
    "allDeclaredFields": true,
    "allDeclaredMethods": true,
    "allDeclaredConstructors": true
  }
]

Resource Configuration:

{
  "resources": {
    "includes": [
      {
        "pattern": ".*\\.(so|dll)"
      }
    ]
  }
}

Steps to Reproduce:

1. Compile a native image using GraalVM that includes jnr/jffi.
2. Run the executable.
3. Observe the UnsatisfiedLinkError.

Expected Behavior:
jnr/jffi should function correctly when compiled into a GraalVM native image, loading native definitions without errors.

Environment:

• OS: Void Linux
• Kernel Version: 6.12.16_1
• GraalVM Version: 23.0.1
• JNR/JFFI Version: 2.2.17
• LMDB Java Version: 0.9.1

[headius]

We'd love to help make this work with native image. Do you have any ideas what we need to improve?

My really quick guess would be that you need to figure out how to get the native image to actually link against the .so/.dll we ship with jffi. I know nothing about making native image work with JNI libraries.