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无法在CentOS 7上安装rmagick ruby gem
gem install rmagick 给我: Building native extensions. This could take a while... ERROR: Error installing rmagick: ERROR: Failed to build gem native extension. /usr/bin/ruby extconf.rb checking for gcc... yes checking for Magick-config... yes *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries …