ref: 38592a6b5f751b65cbf6f8def3e0068045a54bf4
dir: /scripts/build_emscripten/
#! /bin/bash
function checkprog() {
type $1 >/dev/null 2>&1 || { echo >&2 "$1 required but not found, aborting."; exit 1; }
}
checkprog emcc
checkprog emconfigure
checkprog emmake
# clean
./waf distclean
# configure
emconfigure ./waf configure --with-target-platform emscripten $*
# build
emmake ./waf build