wasmer

Wasmer sample

This sample shows how to run WebAssembly inside EGo using Wasmer.

By default, wasmer-go comes with a shared library. EGo only supports static linking. To this end, download the wasmer static library and tell the Go compiler to use it:

wget -O- https://github.com/wasmerio/wasmer/releases/download/2.2.1/wasmer-linux-amd64.tar.gz | tar xz --one-top-level=wasmer
CGO_CFLAGS="-I$PWD/wasmer/include" CGO_LDFLAGS="$PWD/wasmer/lib/libwasmer.a -ldl -lm -static-libgcc" ego-go build -tags custom_wasmer_runtime

Then you can sign and run as usual:

ego sign wasmer_sample
ego run wasmer_sample

You should see an output similar to:

[erthost] loading enclave ...
[erthost] entering enclave ...
[ego] starting application ...
Results of `sum`: 3

Note that executableHeap is enabled in enclave.json so that Wasmer can JIT-compile the WebAssembly.