torch/csrc/serialization.cpp:2:10: fatal error: 'system_error' file not found
#include <system_error>
         ^
In file included from torch/csrc/autograd/engine.cpp:1:

pytorch/torch/csrc/autograd/function_hook.h:11:40: error: no member named 'shared_ptr' in namespace 'std'
using variable_list = std::vector<std::shared_ptr<Variable>>;
                                  ~~~~~^
/Users/hangzhang/pytorch/torch/csrc/autograd/function_hook.h:11:51: error: 'Variable' does not refer to a value
using variable_list = std::vector<std::shared_ptr<Variable>>;