See the error column below. I tried uninstalling / installing imagemagick via homebrew, "gem pristine rmagick" and reinstalling rmagick. They all returned the same error. Any help would be VERY appreciated - it was a while.
$ gem install rmagick Building native extensions. This could take a while... ERROR: Error installing rmagick: ERROR: Failed to build gem native extension. /Users/LU/.rvm/rubies/ruby-1.9.3-p362/bin/ruby extconf.rb checking for Ruby version >= 1.8.5... yes extconf.rb:128: Use RbConfig instead of obsolete and deprecated Config. checking for /usr/local/bin/gcc-4.2... yes checking for Magick-config... yes checking for ImageMagick version >= 6.4.9... 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 checking for InitializeMagick() in -lMagick++... no Can't install RMagick 2.13.1. 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:
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