Installing Rmagick on OSX High Sierra, Installing Rmagick on OSX High Sierra. System/Library/Frameworks/amework/Versions/1.8/usr/bin/ruby extconf.rb mkmf.rb can't find header files for ruby at /System/Library/Frameworks/amework/Versions/1.8/usr/lib/ruby/ruby.h Gem files will remain installed in /Library/Ruby/Gems/1.8/gems/rmagick-2.13.1 for inspection.
Ruby gem rmagick won't install on Mac OS X, ERROR: Error installing rmagick: ERROR: Failed to build gem native my Xcode to the latest version (4.6.1) on OSX 1.8.2 fixed this problem ERROR: Error installing rmagick: ERROR: Failed to build gem native extension.