OS X Lion,ImageMagick和RMagic - 如何安装？

Question

我正在尝试安装ImageMagick和RMagic,因为它们在OS X Lion升级后无法运行.当我跑

brew install imagemagick

我收到了错误

Error: You must `brew link libpng' before imagemagick can be installed

但是当我brew link libpng按照错误消息中提到的那样运行时,我会得到:

Error: You must `brew link libpng' before imagemagick can be installed
Radek-Macs-MacBook-Pro-3:sharelock-staging radek$ brew link libpng
Linking /usr/local/Cellar/libpng/1.5.13... Warning: Could not link libpng. Unlinking...

Error: Could not symlink file: /usr/local/Cellar/libpng/1.5.13/include/pnglibconf.h
/usr/local/include/pnglibconf.h may already exist.
/usr/local/include may not be writable.

如何解决这个问题？我两天没有成功地解决了RMagic的事情......这是一场纯粹的噩梦......

Answer 1

遇到同样的问题,我跑了:

$ brew unlink jpeg 
$ brew link --overwrite jpeg
$ brew unlink libpng
$ brew link --overwrite libpng 
$ brew install imagemagick

并且我得到了imagemagick并且正在运行