ld: warning: -macosx_version_min not specificed, assuming 10.7
Undefined symbols for architecture x86_64:
  "___emutls_get_address", referenced from:
      _MPIU_Thread_CS_exit_lockname_recursive_impl_.clone.1.clone.2 in libpmpich.a(_barrier.o)
      _MPIU_Thread_CS_enter_lockname_recursive_impl_.clone.0.clone.3 in libpmpich.a(_barrier.o)
      _MPIU_Thread_CS_exit_lockname_recursive_impl_.clone.1.clone.2 in libpmpich.a(_comm_rank.o)
      _MPIU_Thread_CS_enter_lockname_recursive_impl_.clone.0.clone.3 in libpmpich.a(_comm_rank.o)
      _MPIU_Thread_CS_exit_lockname_recursive_impl_.clone.1.clone.2 in libpmpich.a(_finalize.o)
      _MPIU_Thread_CS_enter_lockname_recursive_impl_.clone.0.clone.3 in libpmpich.a(_finalize.o)
      _MPIU_Thread_CS_enter_lockname_recursive_impl_.clone.1.clone.2 in libmpich.a(initthread.o)
      ...
ld: symbol(s) not found for architecture x86_64