cloud9でrmagickがbundle installでエラー

Building native extensions. This could take a while... ERROR: Error installing rmagick: ERROR: Failed to build gem native extension. current directory: /usr/local/rvm/gems/ruby-2.3.0/gems/rmagick-2.16.0/ext/RMagick /usr/local/rvm/rubies/ruby-2.3.0/bin/ruby -r ./siteconf20161001-5091-1q4dbmw.rb extconf.rb checking for gcc... yes checking for Magick-config... no checking for pkg-config... yes Package MagickCore was not found in the pkg-config search path. Perhaps you should add the directory containing `MagickCore.pc' to the PKG_CONFIG_PATH environment variable No package 'MagickCore' found checking for outdated ImageMagick version (<= 6.4.9)... 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 --without-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=/usr/local/rvm/rubies/ruby-2.3.0/bin/$(RUBY_BASE_NAME) To see why this extension failed to compile, please check the mkmf.log which can be found here: /usr/local/rvm/gems/ruby-2.3.0/extensions/x86_64-linux/2.3.0/rmagick-2.16.0/mkmf.log extconf failed, exit code 1 Gem files will remain installed in /usr/local/rvm/gems/ruby-2.3.0/gems/rmagick-2.16.0 for inspection. Results logged to /usr/local/rvm/gems/ruby-2.3.0/extensions/x86_64-linux/2.3.0/rmagick-2.16.0/gem_make.out

解決策

apt-getでライブラリを導入

sudo apt-get install libjpeg-devel libpng-devel

sudo apt-get install imagemagick libmagickcore-dev libmagickwand-dev

sudo gem install rmagick

bundle install