Compile for WASM

As of version 0.10.1, this crate can now compile to WASM!

For example, there is an example in the zstd-sys repository you can compile.

First, make sure you have the wasm32-unknown-unknown target. If you want to try the WASM binaries locally, you will also need a runtime like wasmtime.

# Make sure you have the correct target
rustup target add wasm32-unknown-unknown

# Build the example
cargo build --target wasm32-unknown-unknown --no-default-features --example it_work

# Run the WASM binary locally using wasmtime
wasmtime target/wasm32-unknown-unknown/debug/examples/it_work.wasm --invoke test_compress

On macOS, you may need some extra steps before you're able to compile:

brew install llvm
export PATH="/usr/local/opt/llvm/bin/:$PATH"
export CC=/usr/local/opt/llvm/bin/clang
export AR=/usr/local/opt/llvm/bin/llvm-ar