```ruby
#
# Cookbook Name:: imagemagick
# Recipe:: rmagick
#
# Copyright 2009, Opscode, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
include_recipe "imagemagick"

case node[:platform]
when "redhat", "centos", "fedora"
  package "ImageMagick-devel"
when "debian", "ubuntu"
  package "libmagickwand-dev"
end

gem_package "rmagick"
```

Use libmagick9-dev for the dev libraries on Ubuntu 8.04 and 8.10
user
```ruby
#
# Cookbook Name:: imagemagick
# Recipe:: rmagick
#
# Copyright 2009, Opscode, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
include_recipe "imagemagick"

case node[:platform]
when "redhat", "centos", "fedora"
  package "ImageMagick-devel"
when "debian", "ubuntu"
  package value_for_platform(
      "ubuntu" => {
        "8.04" => "libmagick9-dev",
        "8.10" => "libmagick9-dev",
      },
      "default" => { "default" => "libmagickwand-dev" }
  )
end

gem_package "rmagick"
```
assistant