Error building ROS on OSX with latest developer tools 5.1

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I've encountered this error building ROS on OSX. As far as I can figure, this started happening after I upgraded my developer tools to the latest version (5.1):

/usr/local/include/boost/atomic/detail/gcc-atomic.hpp:961:64: error: no matching
      constructor for initialization of 'storage_type' (aka
      'boost::atomics::detail::storage128_type')
    explicit base_atomic(value_type const& v) BOOST_NOEXCEPT : v_(0)
                                                               ^  ~
/usr/local/include/boost/atomic/detail/gcc-atomic.hpp:932:28: note: candidate
      constructor (the implicit copy constructor) not viable: no known
      conversion from 'int' to 'const boost::atomics::detail::storage128_type'
      for 1st argument
struct BOOST_ALIGNMENT(16) storage128_type
                           ^
/usr/local/include/boost/atomic/detail/gcc-atomic.hpp:932:28: note: candidate
      constructor (the implicit default constructor) not viable: requires 0
      arguments, but 1 was provided

It looks like this is problem with some of the dependencies for TF or TF2, and is causing a large number of things to fail to build properly.