problem with installing rmagick gem on mac os x

error.log

$ gem install rmagick -v '2.12.2'                                                    [ruby-1.9.3-p551]
Building native extensions.  This could take a while...
ERROR:  Error installing rmagick:
	ERROR: Failed to build gem native extension.

    /Users/nodecarter/.rvm/rubies/ruby-1.9.3-p551/bin/ruby -r ./siteconf20160205-17372-lm8cre.rb extconf.rb
checking for Ruby version >= 1.8.5... yes
extconf.rb:107: Use RbConfig instead of obsolete and deprecated Config.
checking for gcc-4.9... yes
checking for Magick-config... yes
checking for ImageMagick version >= 6.3.5... yes
checking for HDRI disabled version of ImageMagick... yes
checking for stdint.h... yes
checking for sys/types.h... yes
checking for wand/MagickWand.h... yes
checking for InitializeMagick() in -lMagickCore... no
checking for InitializeMagick() in -lMagick... no
Can't install RMagick 2.12.2. Can't find the ImageMagick library or one of the dependent libraries. Check the mkmf.log file for more detailed information.

*** 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/nodecarter/.rvm/rubies/ruby-1.9.3-p551/bin/ruby
	--with-MagickCorelib
	--without-MagickCorelib
	--with-Magicklib
	--without-Magicklib

extconf failed, exit code 1

Gem files will remain installed in /Users/nodecarter/.rvm/gems/ruby-1.9.3-p551/gems/rmagick-2.12.2 for inspection.
Results logged to /Users/nodecarter/.rvm/gems/ruby-1.9.3-p551/extensions/x86_64-darwin-15/1.9.1/rmagick-2.12.2/gem_make.out

solve.sh

cd /usr/local/Cellar/imagemagick/6.9.6-4/lib
ln -s libMagick++-6.Q16.6.dylib libMagick++.dylib
ln -s libMagickCore-6.Q16.2.dylib libMagickCore.dylib
ln -s libMagickWand-6.Q16.2.dylib libMagickWand.dylib


C_INCLUDE_PATH=/usr/local/Cellar/imagemagick/6.9.6-4/include/ImageMagick-6 PKG_CONFIG_PATH=/usr/local/Cellar/imagemagick/6.9.6-4/lib/pkgconfig gem install rmagick -v '2.12.2'