筆者はかなりrmagickに苦戦させて頂いたので、同じ人がいるのではないかと思いやり方を記載します。 ■必要なもの ImageMagick No package 'MagickCore' found checking for stdint.h... yes checking for sys/types.h... yes checking for wand/MagickWand.h... no Can't install RMagick 2.13.2. Can't find MagickWand.h. *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log fil