我在bundle install命令上遇到这个错误：

Installing rmagick (2.13.1) 
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
 
        /usr/local/rvm/rubies/ruby-1.8.7-p371/bin/ruby extconf.rb 
checking for Ruby version >= 1.8.5... yes
checking for gcc... yes
checking for Magick-config... no
Can't install RMagick 2.13.1. Can't find Magick-config in /usr/local/rvm/gems/ruby-1.8.7-p371/bin:/usr/local/rvm/gems/ruby-1.8.7-p371@global/bin:/usr/local/rvm/rubies/ruby-1.8.7-p371/bin:/usr/local/rvm/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
 
*** 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-1.8.7-p371/bin/ruby
 
 
Gem files will remain installed in /home/selfsale/.bundler/tmp/2908/gems/rmagick-2.13.1 for inspection.
Results logged to /home/selfsale/.bundler/tmp/2908/gems/rmagick-2.13.1/ext/RMagick/gem_make.out
 
An error occurred while installing rmagick (2.13.1),and Bundler cannot continue.
Make sure that `gem install rmagick -v '2.13.1'` succeeds before bundling.

然后我做了一些搜索,并找到了一些添加缺少的库的建议：

sudo apt-get install libmagick9-dev：

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package libmagick9-dev is not available,but is referred to by another package.
This may mean that the package is missing,has been obsoleted,or
is only available from another source
However the following packages replace it:
  graphicsmagick-libmagick-dev-compat
 
E: Package 'libmagick9-dev' has no installation candidate

sudo apt-get install graphicsmagick-libmagick-dev-compat：

Reading package lists... Done
Building dependency tree       
Reading state information... 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.
The following information may help to resolve the situation:
 
The following packages have unmet dependencies:
 graphicsmagick-libmagick-dev-compat : Depends: libgraphicsmagick1-dev but it is not going to be installed
                                       Depends: libgraphicsmagick++1-dev but it is not going to be installed
E: Unable to correct problems,you have held broken packages.

sudo apt-get install libmagickwand-dev：

Reading package lists... Done
Building dependency tree       
Reading state information... 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.
The following information may help to resolve the situation:
 
The following packages have unmet dependencies:
 libmagickwand-dev : Depends: libmagickcore-dev (= 8:6.6.9.7-5ubuntu3.2) but it is not going to be installed
E: Unable to correct problems,you have held broken packages.

sudo apt-get install libmagickcore-dev：

Reading package lists... Done
Building dependency tree       
Reading state information... 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.
The following information may help to resolve the situation:
 
The following packages have unmet dependencies:
 libmagickcore-dev : Depends: libbz2-dev but it is not going to be installed
                     Depends: libfreetype6-dev but it is not going to be installed
                     Depends: libpng-dev
                     Depends: librsvg2-dev but it is not going to be installed
                     Depends: libwmf-dev but it is not going to be installed
                     Depends: libx11-dev but it is not going to be installed
                     Depends: libxext-dev but it is not going to be installed
                     Depends: libxt-dev but it is not going to be installed
E: Unable to correct problems,you have held broken packages.

sudo apt-get install libmagick -dev：

Reading package lists... Done
Building dependency tree       
Reading state information... 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.
The following information may help to resolve the situation:
 
The following packages have unmet dependencies:
 libmagick++-dev : Depends: libmagickcore-dev (= 8:6.6.9.7-5ubuntu3.2) but it is not going to be installed
                   Depends: libmagickwand-dev (= 8:6.6.9.7-5ubuntu3.2) but it is not going to be installed
E: Unable to correct problems,you have held broken packages.

似乎任何安装正确软件包的尝试都会出现这个问题.

我刚刚看到一篇关于从源代码安装imagemagick的帖子,所以我打算尝试一下,但如果有人有任何更好的想法,我很乐意听到它们.

谢谢