Inspired by this blog post.
For more detailed info and background, read it. This is how to setup rust -> wasm/js build on FreeBSD.
- FreeBSD 12-CURRENT
- Latest ports installed via
pkg install
Install Rust using rustup
$ curl https://sh.rustup.rs -sSf | sh
Add wasm target
$ rustup target add wasm32-unknown-emscripten
Hopefully soon pkg install emscripten will be sufficient but for now we build from source.
Download, build and install emscripten (takes a while...)
$ curl https://s3.amazonaws.com/mozilla-games/emscripten/releases/emsdk-portable.tar.gz | tar -xf -
$ cd ~/emsdk-portable
$ ./emsdk update
$ ./emsdk install sdk-incoming-64bit
$ ./emsdk activate sdk-incoming-64bit
A copy of Linux's node is installed. We need to use node from ports.
$ sudo pkg install node
Edit $HOME/.emscripten to use node from ports (/usr/local/bin/node).
Add to PATH ($DEV is the folder where I ran the curl command):
$DEV/emsdk-portable:$DEV/emsdk-portable/clang/fastcomp/build_incoming_64/bin:$DEV/emsdk-portable/emscripten/incoming
$ emcc -v should now output something like:
emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 1.37.16
clang version 4.0.0 (https://github.com/kripken/emscripten-fastcomp-clang.git feff46c2a99f012dfdd291f02636fd386d132969) (https://github.com/kripken/emscripten-fastcomp.git d11ecd94546630d1e087de93ac95eccb2630b5e3) (emscripten 1.37.16 : 1.37.16)
Target: x86_64-unknown-freebsd12.0
Thread model: posix
InstalledDir: /usr/home/johannes/dev/emsdk-portable/clang/fastcomp/build_incoming_64/bin
INFO:root:(Emscripten: Running sanity checks)
Now to the fun part.
cd back to this project folder.
Set to use rust nightly.
$ rustup override set nightly
Build with
$ make
(this will take a while the first time...)
Start a webserver:
$ python -m SimpleHTTPServer
And surf to http://localhost:8000/site/