```ruby
#
# Cookbook Name:: boost
# Attributes:: default
#
# Copyright 2009-2015, Chef Software, 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.
#

default['boost']['source'] = 'http://sourceforge.net/projects/boost/files/boost/1.51.0/'
default['boost']['file'] = 'boost_1_51_0.tar.gz'
default['boost']['build_dir'] = 'boost_1_51_0'
```

Update to the latest boost Library
user
```ruby
#
# Cookbook Name:: boost
# Attributes:: default
#
# Copyright 2009-2015, Chef Software, 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.
#

default['boost']['source'] = 'http://sourceforge.net/projects/boost/files/boost/1.59.0/'
default['boost']['file'] = 'boost_1_59_0.tar.gz'
default['boost']['build_dir'] = 'boost_1_59_0'
```
assistant