Unable to run in Node

[jamespantalones]

I am running in an Ubuntu container after following the instructions listed on the repo here (and the wasmedge-quickjs repo).

I am instantiating the VM like so:

const path = require("path");
const wasmedge = require("wasmedge-core");

const vm = new wasmedge.VM(
  path.resolve(process.cwd(), "target/wasm32-wasi/release/main.wasm"),
  {
    EnableWasiStartFunction: true,
    args: [],
    preopens: {},
  }
);

console.log(vm);

vm.Start();

However, whenever i try to start the app, I am receiving the following error:

root@944558b7af10:/app# node server
/app/node_modules/wasmedge-core/index.js:7
process.dlopen(module, binding_path,
        ^
Error: /app/node_modules/wasmedge-core/lib/binding/linux-x64/wasmedge.node: cannot open shared object file: No such file or directory
    at Object.<anonymous> (/app/node_modules/wasmedge-core/index.js:7:9)
    at Module._compile (node:internal/modules/cjs/loader:1105:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1159:10)
    at Module.load (node:internal/modules/cjs/loader:981:32)
    at Module._load (node:internal/modules/cjs/loader:827:12)
    at Module.require (node:internal/modules/cjs/loader:1005:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at Object.<anonymous> (/app/server.js:4:18)
    at Module._compile (node:internal/modules/cjs/loader:1105:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1159:10) {
  code: 'ERR_DLOPEN_FAILED'
}

Any ideas on what this could be? Thanks

[hydai]

Do you have full logs including how to install the wasmedge-core part? I am not sure if the wasmedge-core is built or installed successfully.

[proohit]

I'm having similar problems there.

Error: libwasmedge_c.so: cannot open shared object file: No such file or directory
    at Object.<anonymous> (/home/direnc/workspace/custom-framework/examples/node/node_modules/wasmedge-core/index.js:7:9)
    at Module._compile (node:internal/modules/cjs/loader:1159:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1213:10)
    at Module.load (node:internal/modules/cjs/loader:1037:32)
    at Module._load (node:internal/modules/cjs/loader:878:12)
    at Module.require (node:internal/modules/cjs/loader:1061:19)
    at require (node:internal/modules/cjs/helpers:103:18)
    at Object.<anonymous> (/home/direnc/workspace/custom-framework/examples/node/lib.js:3:18)
    at Module._compile (node:internal/modules/cjs/loader:1159:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1213:10) {
  code: 'ERR_DLOPEN_FAILED'
}

For some reason, libwasmedge_c.so isn't installed when installing WasmEdge. The Go bindings work without problems. My $HOME/.wasmedge/lib lists following files and there is no libwasmedge_c.so:

$ ls ~/.wasmedge/lib
libtensorflow.so        libtensorflow_framework.so        libtensorflowlite_c.so           libwasmedge.so
libtensorflow.so.2      libtensorflow_framework.so.2      libwasmedge-image_c.so           libwasmedge.so.0
libtensorflow.so.2.6    libtensorflow_framework.so.2.6    libwasmedge-tensorflow_c.so      libwasmedge.so.0.0.1
libtensorflow.so.2.6.0  libtensorflow_framework.so.2.6.0  libwasmedge-tensorflowlite_c.so

[hydai]

Hi @proohit
The libwasmedge_c is renamed to libwasmedge after the 0.10.0 release. That's why the dlopen failed. It's not a trivial fix, since there are several API changes between 0.9.0 and the latest one.