```ruby
Pod::Spec.new do |s|
  s.name         = 'poco'
  s.version      = '1.4.6'
  s.summary      = 'The C++ POCO Library'
  s.description  = <<-DESC
Written in modern, standard ANSI C++, using the C++ Standard Library. Modular design, very few external dependencies, builds out-of-the-box. Good mix of "classic" object-oriented design with modern C++. Clean, easy-to-understand code (we frequently get compliments on that), consistent coding style, comprehensive test suite.
                   DESC
  s.homepage     = 'http://pocoproject.org/'
  s.license      = 'POCO'
  s.author       = { 'waTeim' => 'truthset@gmail.com' }
  s.source       = { :git => 'https://github.com/waTeim/poco.git', :tag => s.version.to_s }
  s.platform     = :osx, '10.6'
  s.requires_arc = false
  s.vendored_libraries = 'lib/*.a'
  s.xcconfig = { 'HEADER_SEARCH_PATHS' => '"$(PODS_ROOT)/poco/include"' }
  s.public_header_files = s.source_files =
     'include/**/*.h',
     'include/**/**/*.h',
     'include/**/**/**/*.h'
  s.header_mappings_dir = 'include'
end
```

Set header files to private
user
```ruby
Pod::Spec.new do |s|
  s.name         = 'poco'
  s.version      = '1.4.6'
  s.summary      = 'The C++ POCO Library'
  s.description  = <<-DESC
Written in modern, standard ANSI C++, using the C++ Standard Library. Modular design, very few external dependencies, builds out-of-the-box. Good mix of "classic" object-oriented design with modern C++. Clean, easy-to-understand code (we frequently get compliments on that), consistent coding style, comprehensive test suite.
                   DESC
  s.homepage     = 'http://pocoproject.org/'
  s.license      = 'POCO'
  s.author       = { 'waTeim' => 'truthset@gmail.com' }
  s.source       = { :git => 'https://github.com/waTeim/poco.git', :tag => s.version.to_s }
  s.platform     = :osx, '10.6'
  s.requires_arc = false
  s.vendored_libraries = 'lib/*.a'
  s.xcconfig = { 'HEADER_SEARCH_PATHS' => '"$(PODS_ROOT)/poco/include"' }
  s.private_header_files = s.source_files =
     'include/**/*.h',
     'include/**/**/*.h',
     'include/**/**/**/*.h'
  s.header_mappings_dir = 'include'
end
```
assistant