I can't build:
dolfin/la/EpetraSparsityPattern.cpp:12:28: error: Epetra_MpiComm.h: No
such file or directory
dolfin/la/EpetraSparsityPattern.cpp: In member function 'virtual void
dolfin::EpetraSparsityPattern::init(dolfin::uint, const dolfin::uint*)':
dolfin/la/EpetraSparsityPattern.cpp:52: error: variable
'Epetra_MpiComm comm' has initializer but incomplete type
dolfin/la/EpetraSparsityPattern.cpp: In member function 'virtual void dolfin::EpetraSparsityPattern::apply()':
dolfin/la/EpetraSparsityPattern.cpp:127: error: variable
'Epetra_MpiComm comm' has initializer but incomplete type
cc1plus: warnings being treated as errors
dolfin/la/EpetraSparsityPattern.cpp:127: error: unused variable 'comm'