Make compile without MPI.

git-svn-id: https://svn.dealii.org/trunk@24427 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/include/deal.II/base/utilities.h b/deal.II/include/deal.II/base/utilities.h
index 9e008a48c06feaf041ca2790fa918903aff6b478..803d62e78fd808785aca2400f61176c05bc1c2e4 100644 (file)
--- a/deal.II/include/deal.II/base/utilities.h
+++ b/deal.II/include/deal.II/base/utilities.h
@@ -23,8 +23,7 @@
 #if defined(DEAL_II_COMPILER_SUPPORTS_MPI) || defined(DEAL_II_USE_PETSC)
 #include <mpi.h>
 #else
-
-extern boost::mutex m;typedef int MPI_Comm;
+  typedef int MPI_Comm;
 #endif
 
 #ifdef DEAL_II_USE_TRILINOS