Не може да се инсталира rmagick gem на Mountain Lion

Забележка: моята ситуация е почти идентична с тази: Не мога да инсталирам pg gem на Mountain Лъв.

Току-що надстроих от Snow Leopard до Mountain Lion и Rails ми създава всякакви проблеми, особено опитът да инсталирам скъпоценния камък „rmagick“. Работя с Ruby 1.9.3-p362 и Rails 3.2.11.

➜  git:(master) ✗ sudo gem install rmagick -v 2.13.1
Building native extensions.  This could take a while...
ERROR:  Error installing rmagick:
    ERROR: Failed to build gem native extension.

        /Users/sscirrus/.rvm/rubies/ruby-1.9.2-p320/bin/ruby extconf.rb
checking for Ruby version >= 1.8.5... yes
checking for gcc-4.2... yes
checking for Magick-config... yes

Warning: Found more than one ImageMagick installation. This could cause problems at runtime.
         /opt/local/bin/Magick-config reports version 6.6.6 Q8 is installed in /opt/local
         /OPT/LOCAL/BIN/Magick-config reports version 6.6.6 Q8 is installed in /opt/local
         /USR/LOCAL/BIN/Magick-config reports version 6.8.0 Q16 is installed in /USR/LOCAL/Cellar/imagemagick/6.8.0-10
Using 6.6.6 Q8 from /opt/local.

checking for ImageMagick version >= 6.4.9... yes
checking for HDRI disabled version of ImageMagick... yes
checking for stdint.h... *** 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
    --without-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/sscirrus/.rvm/rubies/ruby-1.9.2-p320/bin/ruby
/Users/sscirrus/.rvm/rubies/ruby-1.9.2-p320/lib/ruby/1.9.1/mkmf.rb:368:in `try_do': The complier failed to generate an executable file. (RuntimeError)
You have to install development tools first.
    from /Users/sscirrus/.rvm/rubies/ruby-1.9.2-p320/lib/ruby/1.9.1/mkmf.rb:452:in `try_cpp'
    from /Users/sscirrus/.rvm/rubies/ruby-1.9.2-p320/lib/ruby/1.9.1/mkmf.rb:834:in `block in have_header'
    from /Users/sscirrus/.rvm/rubies/ruby-1.9.2-p320/lib/ruby/1.9.1/mkmf.rb:693:in `block in checking_for'
    from /Users/sscirrus/.rvm/rubies/ruby-1.9.2-p320/lib/ruby/1.9.1/mkmf.rb:280:in `block (2 levels) in postpone'
    from /Users/sscirrus/.rvm/rubies/ruby-1.9.2-p320/lib/ruby/1.9.1/mkmf.rb:254:in `open'
    from /Users/sscirrus/.rvm/rubies/ruby-1.9.2-p320/lib/ruby/1.9.1/mkmf.rb:280:in `block in postpone'
    from /Users/sscirrus/.rvm/rubies/ruby-1.9.2-p320/lib/ruby/1.9.1/mkmf.rb:254:in `open'
    from /Users/sscirrus/.rvm/rubies/ruby-1.9.2-p320/lib/ruby/1.9.1/mkmf.rb:276:in `postpone'
    from /Users/sscirrus/.rvm/rubies/ruby-1.9.2-p320/lib/ruby/1.9.1/mkmf.rb:692:in `checking_for'
    from /Users/sscirrus/.rvm/rubies/ruby-1.9.2-p320/lib/ruby/1.9.1/mkmf.rb:833:in `have_header'
    from extconf.rb:193:in `<main>'


Gem files will remain installed in /Users/sscirrus/.rvm/gems/ruby-1.9.2-p320/gems/rmagick-2.13.1 for inspection.
Results logged to /Users/sscirrus/.rvm/gems/ruby-1.9.2-p320/gems/rmagick-2.13.1/ext/RMagick/gem_make.out

➜  applyco git:(master) ✗ brew install imagemagick --disable-openmp
Warning: It appears you have MacPorts or Fink installed.
Software installed with other package managers causes known problems for
Homebrew. If a formula fails to build, uninstall MacPorts/Fink and try again.
Error: imagemagick-6.8.0-10 already installed

➜  applyco git:(master) ✗ apt-get install libmagick9-dev
zsh: command not found: apt-get

Опитах:

• Инсталиране на Xcode с инструменти на командния ред
• Преинсталиране на homebrew
• Изчистване на всички скъпоценни камъни на моето репо (включително Gemfile.lock) и стартиране на bundle install
• Преинсталиране на скъпоценния камък на пакета
• Преинсталиране на ImageMagick

Нищо, включително отговорите другаде на SO, не е било от полза. Можете ли да ме насочите в правилната посока?