Versuch, Rmagick unter Debian zu installieren

Eines der Dinge, die Sie tun müssen, um Rmagick zu installieren

apt-get install libmagick9-dev 

Wenn ich das versuche, erhalte ich folgende Fehler

Reading package lists... Done Building dependency tree... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming.  Since you only requested a single operation it is extremely likely that the package is simply not installable and a bug report against that package should be filed. The following information may help to resolve the situation:  The following packages have unmet dependencies: libmagick9-dev: Depends: libjpeg62-dev but it is not going to be installed Depends: libbz2-dev but it is not going to be installed Depends: libtiff4-dev but it is not going to be installed Depends: libwmf-dev (>= 0.2.7-1) but it is not going to be installed Depends: libz-dev Depends: libpng12-dev but it is not going to be installed Depends: libfreetype6-dev but it is not going to be installed Depends: libexif-dev but it is not going to be installed Depends: libdjvulibre-dev but it is not going to be installed Depends: librsvg2-dev but it is not going to be installed Depends: libgraphviz-dev but it is not going to be installed E: Broken packages 

Ich weiß nicht, was ich tun soll, um das zu beheben?

EDIT 1: Ich habe es versucht

sudo apt-get install librmagick-ruby 

und es hat gut funktioniert, aber dann musste ich den fleximage gem installieren

gem1.8 install fleximage 

und ich habe die folgende Fehlermeldung erhalten

Building native extensions. This could take a while... ERROR: Error installing fleximage: ERROR: Failed to build gem native extension.  /usr/bin/ruby1.8 extconf.rb checking for Ruby version >= 1.8.5... yes checking for cc... yes checking for Magick-config... no Can't install RMagick 2.12.2. Can't find Magick-config in /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/var/lib/gems/1.8/bin  *** 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=$/include --with-opt-lib --without-opt-lib=$/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/usr/bin/ruby1.8   Gem files will remain installed in /usr/lib/ruby/gems/1.8/gems/rmagick-2.12.2 for inspection. Results logged to /usr/lib/ruby/gems/1.8/gems/rmagick-2.12.2/ext/RMagick/gem_make.out