VLC for android 编译错误

在Mac os 10.10.2上编译vlc for android的时候，出现如下错误：

$ sh compile.sh 
*** No ANDROID_ABI defined architecture: using ARMv7
Downloading gradle
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   354  100   354    0     0    455      0 --:--:-- --:--:-- --:--:--   455
Archive:  gradle-2.2.1-all.zip
  End-of-central-directory signature not found.  Either this file is not
  a zipfile, or it constitutes one disk of a multi-part archive.  In the
  latter case the central directory and zipfile comment will be found on
  the last disk(s) of this archive.
unzip:  cannot find zipfile directory in one of gradle-2.2.1-all.zip or
        gradle-2.2.1-all.zip.zip, and cannot find gradle-2.2.1-all.zip.ZIP, period.

修改 compile.sh at Line 81:

wget ${GRADLE_URL} 2>/dev/null || curl -O ${GRADLE_URL}
=>wget ${GRADLE_URL} 2>/dev/null || curl -O -L ${GRADLE_URL}