当我尝试安装rmagic时：
gem install rmagic
它给出错误：
Building native extensions. This could take a while...
ERROR: Error installing rmagick:
ERROR: Failed to build gem native extension.
/home/biske/.rbenv/versions/2.0.0-p247/bin/ruby extconf.rb
checking for Ruby version >= 1.8.5... yes
checking for gcc... yes
checking for Magick-config... yes
checking for ImageMagick version >= 6.4.9... yes
checking for HDRI disabled version of ImageMagick... yes
checking for stdint.h... yes
checking for sys/types.h... yes
checking for wand/MagickWand.h... no
Can't install RMagick 2.13.2. Can't find MagickWand.h.
*** 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=/home/biske/.rbenv/versions/2.0.0-p247/bin/ruby
Gem files will remain installed in /home/biske/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/rmagick-2.13.2 for inspection.
Results logged to /home/biske/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/rmagick-2.13.2/ext/RMagick/gem_make.out
我试图搜索问题，发现我缺少libmagickwand-dev。我尝试用以下方法安装它：
sudo apt-get install libmagickwand-dev
但它会引发错误：
The following packages have unmet dependencies:
libmagickwand-dev : Depends: libmagickcore-dev (= 8:6.7.7.10-5ubuntu2) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
如果我尝试安装它：
sudo apt-get install libmagickcore-dev
它给出错误：
The following packages have unmet dependencies:
libmagickcore-dev : Depends: librsvg2-dev but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
如果我尝试安装它：
sudo apt-get install librsvg2-dev
它给出错误：
The following packages have unmet dependencies:
librsvg2-dev : Depends: libglib2.0-dev (>= 2.24.0) but it is not going to be installed
Depends: libgdk-pixbuf2.0-dev (>= 2.23.5-2) but it is not going to be installed
Depends: libcairo2-dev (>= 1.2.0) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
如果我尝试使用：
安装libglib2.0-devsudo apt-get install libglib2.0-dev
它给出错误：
The following packages have unmet dependencies:
libglib2.0-dev : Depends: libglib2.0-0 (= 2.36.0-1ubuntu1) but 2.36.0-1ubuntu2 is to be installed
Depends: libglib2.0-bin (= 2.36.0-1ubuntu1)
E: Unable to correct problems, you have held broken packages.
如果我用：
安装libglib2.0-0sudo apt-get install libglib2.0-0
它给出了：
libglib2.0-0 is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
如果我用：
安装libglib2.0-binsudo apt-get install libglib2.0-bin
它给出了：
Reading package lists... Done
Building dependency tree
Reading state information... Done
libglib2.0-bin is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
安装了这两个库，但又重新发布了：
sudo apt-get install libglib2.0-dev
它给出了同样的错误：
The following packages have unmet dependencies:
libglib2.0-dev : Depends: libglib2.0-0 (= 2.36.0-1ubuntu1) but 2.36.0-1ubuntu2 is to be installed
Depends: libglib2.0-bin (= 2.36.0-1ubuntu1)
E: Unable to correct problems, you have held broken packages.
这里有什么问题？
我正在使用Ubuntu 13.04，rbenv，ruby 2.0.0，如果这很重要的话。
答案 0 :(得分：16)
试试这个
首先安装imagemagick
sudo apt-get install imagemagick
然后
sudo apt-get install libmagickwand-dev
答案 1 :(得分：14)
解决方案是在可以找到这些库的位置添加ppa。
添加PPA：
sudo add-apt-repository ppa:ricotz/testing
然后更新包列表：
sudo apt-get update
最后安装：
sudo apt-get install libmagickwand-dev
答案 2 :(得分：3)
首先尝试清除apt存储库并删除所有损坏的软件包：
sudo apt-get update
sudo apt-get autoclean
sudo apt-get clean
sudo apt-get autoremove
如果系统识别出任何损坏的软件包，请强制删除它们（用您自己的代替package_name）：
sudo dpkg --remove -force --force-remove-reinstreq package_name
然后重新安装任何丢失的软件包。
答案 3 :(得分：0)
您只需要安装：
sudo apt-get install libmagickwand-dev
答案 4 :(得分：0)
以下是此blog
的好例子以下命令将解决您的问题。它帮助我安装 rmagick 。
sudo apt-get install libdjvulibre-dev libjpeg-dev libtiff-dev libwmf-dev libmagickcore-dev libmagickwand-dev libmagick++-dev
答案 5 :(得分：0)
这对我有用：