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我一直堅持這一兩天，所以請幫助！安裝opencv創業板 - extconf.rb錯誤
我運行MAC OS X（10.7.5），安裝了Xcode（4.5.2）和命令行工具。 Ruby 1.9.3-p362，RVM 1.17.8。 apple-gcc42也已安裝。我使用Homebrew進行安裝。
當我嘗試安裝OpenCV的寶石，我得到以下錯誤：
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers. Check the mkmf.log file for more
details. You may need configuration options.
Provided configuration options:
--with-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/Users/samanthacabral/.rvm/rubies/ruby-1.9.3-p362/bin/ruby
--with-opencv-dir
--without-opencv-dir
--with-opencv-include
--without-opencv-include=${opencv-dir}/include
--with-opencv-lib
--without-opencv-lib=${opencv-dir}/lib
--with-ffcall-dir
--without-ffcall-dir
--with-ffcall-include
--without-ffcall-include=${ffcall-dir}/include
--with-ffcall-lib
--without-ffcall-lib=${ffcall-dir}/lib
--with-cxcorelib
--without-cxcorelib
extconf.rb:32:in `block in <main>': libcxcore not found. (RuntimeError)
from extconf.rb:31:in `each'
from extconf.rb:31:in `<main>'
我試圖重新安裝RVM幾次，使一些在類似的問題建議的其他變化。
我的寶石文件編譯得很好，沒有opencv gem，但是我遇到與RMagick類似的問題（顯示extconf.rb錯誤）。
我該怎麼辦？
謝謝！