Mac 煎饼

1. 如何卸载通过brew安装的package?
   Answer:
   可以通过brew rmdeps 或者brew rmtree来卸载。如果电脑没有安装rmtree，则：

   $\$$brew tap beeftornado/rmtree && brew install brew-rmtree
   $\$$brew rmtree “package”

2. 如何安装PyQt5 on Mac 10.9?
   Answer:
   首先安装sip,从这个网站http://pyqt.sourceforge.net/Docs/PyQt5/installation.html。接着安装PyQt5,从网站上下载source，然后$python configure.py。

   2.1 报错
   Error: PyQt5 requires Qt v5.0 or later. You seem to be using v3. Use the --qmake flag to specify the correct version of qmake.
   填加命令：

   python configure.py --qmake /Users/cygao/Qt/5.3/clang_64/bin/qmake

   2.2 报错Project ERROR: Could not resolve SDK path for 'macosx10.8'
   修改文件/users/usrname/Qt/5.3/clang_64/mkspecs/qdevice.pri中的：

   !host_build:QMAKE_MAC_SDK = macosx10.8

   为

   !host_build:QMAKE_MAC_SDK = macosx10.9

   2.3 报错
   Error: Make sure you have a working sip on your PATH or use the --sip argument to explicitly specify a working sip.
   填加命令：

   python configure.py --qmake /Users/cygao/Qt/5.3/clang_64/bin/qmake --sip /System/Library/Frameworks/Python.framework/Versions/2.7/bin/sip 

   最后再

   sudo make (或者make)
   sudo make install