[build] up haxe version

tasks/sdk.js

@@ -7,6 +7,7 @@ const tar = require('tar');
 const ProgressBar = require('progress');
 const colors = require('ansi-colors');
 const log = require('fancy-log');
+const mkdirp = require('mkdirp');
 
 
 class System {
@@ -79,13 +80,14 @@ class Sdk {
         if (this.prepared) {
             return Promise.resolve();
         } else {
+            mkdirp(this.path);
             const bar = new ProgressBar(`${this.tag} [:bar] :percent :etas`, {width: 40, total: 1000, clear: true});
             let stream = got.stream(this.link);
             stream = stream.on('downloadProgress', (p) => bar.update(p.percent));
             if (this.link.endsWith('.zip')) {
                 stream = stream.pipe(unzip.Extract({path: this.path}));
             } else if (this.link.endsWith('tar.gz')) {
-                stream = stream.pipe(tar.x({C: this.path}));
+                stream = stream.pipe(tar.x({C: this.path, strip: 1}));
             } else {
                 stream = stream.pipe(fs.createWriteStream(this.path));
             }