title: how install qt4-no-webkit in macOS Sierra
body: <p>I'm trying install ROS indigo in macOS Sierra.</p>
  
  <p>However I met a big trouble on it.</p>
  
  <p>I searched a lot and from here(<a href="https://github.com/mikepurvis/ros-install-osx/issues/63" rel="nofollow noreferrer">https://github.com/mikepurvis/ros-install-osx/issues/63</a>) I found the reason why I cannot install indigo in Sierra successfully.</p>
  
  <p>indigo needs qt4. but Sierra just has qt5. </p>
  
  <p>therefore, I installed qt4 by following this question(<a href="https://stackoverflow.com/questions/39821177/python-pyqt-on-macos-sierra">Python PyQt on macOS Sierra</a>)</p>
  
  <pre><code>brew tap cartr/qt4
  brew tap-pin cartr/qt4
  brew install qt
  brew install pyside
  </code></pre>
  
  <p>when I checked qt with command:</p>
  
  <blockquote>
    <p>brew info qt</p>
  </blockquote>
  
  <p>it showed:</p>
  
  <pre><code>cartr/qt4/qt: stable 4.8.7 (bottled), HEAD
  Cross-platform application and UI framework
  https://www.qt.io/
  /usr/local/Cellar/qt/4.8.7_3 (2,720 files, 109.4MB) *
    Poured from bottle on 2017-03-21 at 10:28:32
  From: https://github.com/cartr/homebrew-qt4/blob/master/qt.rb
  ==&gt; Dependencies
  Required: openssl ✔
  Optional: dbus ✘, mysql ✘, postgresql ✘
  ==&gt; Requirements
  Build: git ✔
  ==&gt; Options
  --with-dbus
      Build with dbus support
  --with-docs
      Build documentation
  --with-mysql
      Build with mysql support
  --with-postgresql
      Build with postgresql support
  --with-qt3support
      Build with deprecated Qt3Support module support
  --without-webkit
      Build without QtWebKit module
  --HEAD
      Install HEAD version
  ==&gt; Caveats
  We agreed to the Qt opensource license for you.
  If this is unacceptable you should uninstall.
  
  Qt Designer no longer picks up changes to the QT_PLUGIN_PATH environment
  variable as it was tweaked to search for plug-ins provided by formulae in
    /usr/local/lib/qt4/plugins
  
  Phonon is not supported on macOS Sierra or with Xcode 8.
  </code></pre>
  
  <p>then, I tried to install ROS again. it warned:</p>
  
  <pre><code>==&gt; Installing gazebo1 from osrf/simulation
  qt4-no-webkit: This formula either does not compile or function as expected on macOS
  versions newer than El Capitan due to an upstream incompatibility.
  </code></pre>
  
  <p>could anyone help me solve this problem? </p>
  
  <p>I appreciate you help.</p>
  
  <p>thanks advance</p>