Emscripten is an LLVM-to-JavaScript compiler. It takes LLVM bitcode - which can be generated from C/C++, using llvm-gcc (DragonEgg) or clang, or any other language that can be converted into LLVM - and compiles that into JavaScript, which can be run on the web (or anywhere else JavaScript can run).
接触Emscripten是因为语音识别软件pocketspinux.js利用了它把pocketspinux移植到JS，这个技术方案让我感到比较震撼，JS的强大还真是不断刷新我的想象空间！
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