message: drake: exhibit cxx_lib
diff: @@ -247,13 +247,15 @@ def configure(curl_config,
  '-id', '@rpath/libc++abi.dylib',
  str(drake.path_build(tgt, True))
  ])
  - lib_cxx = drake.copy(drake.nodes('/usr/lib/libc++.1.dylib'), lib_path, strip_prefix = True,
  + lib_cxx = drake.copy(drake.node('/usr/lib/libc++.1.dylib'), lib_path, strip_prefix = True,
  post_process = rpath_libcxx)
  - lib_cxx_abi = drake.copy(drake.nodes(libcxxabi_lib), lib_path, strip_prefix = True,
  + lib_cxx_abi = drake.copy(drake.node(libcxxabi_lib), lib_path, strip_prefix = True,
  post_process = rpath_libcxxabi)
  - cxx_libs = lib_cxx + lib_cxx_abi
  + cxx_libs = [lib_cxx, lib_cxx_abi]
  + cxx_lib = lib_cxx
  else:
  cxx_libs = []
  + cxx_lib = None
  # Boost
  boost = boost or drake.cxx.boost.Boost()
  