Remove static lib dependencies when the user project for a CocoaPods is an static lib project itself

podfile_static_lib

# we don't want to link static libs or it will fail to build
# see https://github.com/CocoaPods/CocoaPods/issues/117
targets = [:target1, :target2]
lib_dependencies = ['z']

post_install do |installer|
    installer.libraries.select { |i| targets.include? i.target_definition.name.to_sym }.each do |l|
        config_file_path = l.library.xcconfig_path
        config_file_contents = File.read(config_file_path)
        
        lib_dependencies.each { |dep| config_file_contents.gsub!(/ -l#{dep}/, '') }
        File.open(config_file_path, 'w') { |file| file.write config_file_contents }
    end
end