pub extern fn sum(x: i32, y: i32) -> i32 {
x + y
}
and use:cargo build --target=wasm32-wasi to compile my rust code to.wasmfile. and I run the.wasmfile like thiswasmtime hello-rust2wasm.wasm, it can worked. but when I call the .wasm file in Java it comes an error.
Exception in thread "main" java.lang.RuntimeException: Failed to instantiate the module: Error while importing "wasi_snapshot_preview1"."fd_write": unknown import. Expected Function(FunctionType { params: [I32, I32, I32, I32], results: [I32] })
but if I use the author's filesimple.wasm` show in README. it can work.
so I want to know how the author compiles the rust to wasm and where I can learn the method.
Summary
I use the code like the tutorial , `
[no_mangle]
pub extern fn sum(x: i32, y: i32) -> i32 { x + y }
and use:cargo build --target=wasm32-wasito compile my rust code to.wasmfile. and I run the.wasmfile like thiswasmtime hello-rust2wasm.wasm, it can worked. but when I call the .wasm file in Java it comes an error.Exception in thread "main" java.lang.RuntimeException: Failed to instantiate the module: Error while importing "wasi_snapshot_preview1"."fd_write": unknown import. Expected Function(FunctionType { params: [I32, I32, I32, I32], results: [I32] })but if I use the author's filesimple.wasm` show in README. it can work.so I want to know how the author compiles the rust to wasm and where I can learn the method.
Additional details
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