How to install Arachni on Mac OS X Lion

Since I am now hairless after installing Arachni on OS X, I’ll hopefully save someone else the same ordeal. Various problems with the OS X toolchain not playing nice with the latest Ruby, then nokogiri causing a segfault because of using an old version of libxml2… etc.
Anyway, finally got a working version as follows:

  1. Install GCC for Lion: https://github.com/kennethreitz/osx-gcc-installer/downloads
  2. Edit ~/.bash_profile and add:
    export CC=gcc-4.2
    export CXX=g++-4.2
  3. Install RVM as per these instructions, remember to make the change to ~/.bash_profile as mentioned on the page and the reload the shell.
  4. Install Homebrew
  5. Install libxml2 and libxslt:
    brew install libxml2 libxslt
  6. Link the newly installed libraries:
    brew link libxml2 libxslt
  7. Install the nokogiri gem: gem install nokogiri once installed, run:
    nokogiri -v and check that it’s linked to the version of libxml2 you just installed.
  8. Install Arachni:
    gem install arachni
  9. Marvel at the lack of segfaults
January 9, 2012 | Filed Under Testing 

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