What's the right argument should be added to host to build for wasm 32-unknown-unknown?

[asmmo]

As the question asks. please, tell me the right argument?

[jedisct1]

Libsodium requires either the emscripten or wasi environments, as it's not even possible to generate random numbers in standalone WebAssembly.

To compile to WASI, the host argument should be wasm32-wasi, same as the compiler's target.

See the existing build script: https://github.com/jedisct1/libsodium/blob/master/dist-build/wasm32-wasi.sh

or the Rust code: https://github.com/jedisct1/libsodium-sys-stable/blob/f78deeb3254913bd05bf1f8c9a834168e9e2b89b/build.rs#L152-L160

[asmmo]

Hence wasm32-unknown-unknown has no place here. we must use wasi or emscripten, musn't we?

[jedisct1]

Libsodium requires either the emscripten or wasi environments, as it's not even possible to generate random numbers in standalone WebAssembly.