安装Python PIL的 support not available解决办法

• 使用PIL生成验证码，安装官方PIL时检查出现如下错误

-----------------------------------------------------------
*** TKINTER support not available (Tcl/Tk 8.4 libraries needed)
*** JPEG support not available
*** ZLIB (PNG/ZIP) support not available
*** FREETYPE2 support not available
-----------------------------------------------------------
To add a missing option, make sure you have the required  
library, and set the corresponding ROOT variable in the  
setup.py script.  

pip install http://effbot.org/downloads/Imaging-1.1.6.tar.gz
* 其实最简单的办法就是先用命令pip uninstall PIL卸载已有的PIL，然后安装PIL的fork版本Pillow，这是一个“友好”(friendly)的PIL版本，由Plone社区维护，主要用于Web开发上。

• easy_install pillow

其他

• 第一步：
  yum install python-devel
• 第二步：

yum install freetype-devel libjpeg-devel libpng-devel  
sudo yum install libtiff-devel libjpeg-devel libzip-devel freetype-devel lcms2-devel libwebp-devel tcl-devel tk-devel  

• 第三步：RPM包安装PIL

下载安装：ftp://rpmfind.net/linux/atrpms/f20-x86_64/atrpms/stable/PIL-1.1.7-10.1.fc20.x86_64.rpm

更多版本：http://rpmfind.net/linux/rpm2html/search.php?query=PIL&submit=Search+...&system=&arch=