install cm* in prebuilt

Author: bobzhang

scripts/prebuilt.js

@@ -18,6 +18,53 @@ function rebuild() {
     stdio: [0, 1, 2]
   });
 }
+var assert = require('assert')
+/**
+ *
+ * @param {string} src
+ * @param {(file:string)=>boolean} filter
+ * @param {string} dest
+ */
+function installDirBy(src, dest, filter) {
+  fs.readdir(src, function(err, files) {
+    if (err === null) {
+      files.forEach(function(file) {
+        if (filter(file)) {
+          var x = path.join(src, file);
+          var y = path.join(dest, file);
+          // console.log(x, '----->', y )
+          fs.copyFile(x, y, (err) => assert.equal(err,null));
+        }
+      });
+    } else {
+      throw err;
+    }
+  });
+}
+
+function install() {
+  var root_dir = path.join(__dirname, "..");
+  var lib_dir = path.join(root_dir, "lib");
+  var jscomp_dir = path.join(root_dir, "jscomp");
+  var runtime_dir = path.join(jscomp_dir, "runtime");
+  var others_dir = path.join(jscomp_dir, "others");
+  var ocaml_dir = path.join(lib_dir, "ocaml");
+  var stdlib_dir = path.join(jscomp_dir, "stdlib-406");
+
+  installDirBy(runtime_dir, ocaml_dir, function(file) {
+    var y = path.parse(file);
+    return y.name === "js" || y.ext.includes("cm");
+    // install js.cmi, js.mli
+  });
+  installDirBy(others_dir, ocaml_dir, function(file) {
+    var y = path.parse(file);
+    return y.ext === ".ml" || y.ext === ".mli" || y.ext.includes("cm");
+  });
+  installDirBy(stdlib_dir, ocaml_dir, function(file) {
+    var y = path.parse(file);
+    return y.ext === ".ml" || y.ext === ".mli" || y.ext.includes("cm");
+  });
+}
 
 function buildCompiler() {
   // for 4.02.3 it relies on OCAMLLIB to find stdlib path
@@ -46,23 +93,20 @@ if (!is_windows) {
   if (!process.argv.includes("-noclean")) {
     rebuild();
   }
+
   require("./ninja.js").updateRelease();
 }
-var os = require("os");
+
 function createOCamlTar() {
-  if (os.platform() === hostPlatform) {
+  if (process.platform === hostPlatform) {
+    install();
     cp.execSync(`git -C ocaml status -uno`, { cwd: root, stdio: [0, 1, 2] });
     cp.execSync(
       `git  -C ocaml archive --format=tar.gz HEAD -o ../vendor/ocaml.tar.gz`,
       { cwd: root, stdio: [0, 1, 2] }
     );
-    // fs.copyFileSync(
-    //   path.join(root, "ocaml", "VERSION"),
-    //   path.join(root, "OCAML_VERSION")
-    // );
   }
 }
+
 createOCamlTar();
 buildCompiler();
-
-//