scripts/build.js
function compileShared() {
  runCommand("python", [
    path.join(emscriptenDirectory, "em++")
  ].concat(sourceFiles).concat(commonOptions).concat([
    "-o", "shared.bc"
  ]));
}
function compileShared() {
  runCommand("python", [
    path.join(emscriptenDirectory, "em++")
  ].concat(sourceFiles).concat(commonOptions).concat([
    "-o", "shared.bc"
  ]));
}
Compiles shared bitcode used to build the targets below.