A bash script to get Rust ready to compile to the web

rust-to-web.sh

# First we get Rust ready.
echo "Getting Rust ready..."
rustup default nightly
rustup target add asmjs-unknown-emscripten
rustup target add wasm32-unknown-emscripten
# Now we get emscripten
echo "Rust is ready. Installing Emscripten..."
curl -O https://s3.amazonaws.com/mozilla-games/emscripten/releases/emsdk-portable.tar.gz
tar -xzf emsdk-portable.tar.gz
source emsdk_portable/emsdk_env.sh
emsdk update
emsdk install sdk-incoming-64bit
emsdk activate sdk-incoming-64bit
# Get emscripten's cache ready. This will make build times much faster
echo 'fn main() { println!("Hello, Emscripten!"); }' > hello.rs
rustc --target=asmjs-unknown-emscripten hello.rs
rustc --target=wasm32-unknown-emscripten hello.rs
echo "Emscripten installed"
# Clean up
rm hello.js emsdk-portable.tar.gz hello.rs

Based off of https://users.rust-lang.org/t/compiling-to-the-web-with-rust-and-emscripten/7627