Fixing issue with missing MPI_CONVERSION_FN_NULL for mpi4py

ThirdParty/mpi4py/vtkmpi4py/CMakeLists.txt

@@ -50,6 +50,12 @@ if (NOT f2c_defined)
                   -DPyMPI_MISSING_MPI_Status_c2f)
 endif()
 
+# SGI's MPT mpi library is missing MPI_CONVERSION_FN_NULL
+check_function_exists(MPI_CONVERSION_FN_NULL conversion_fn_defined)
+if (NOT conversion_fn_defined)
+  add_definitions(-DPyMPI_MISSING_MPI_CONVERSION_FN_NULL)
+endif()
+
 # -----------------------------------------------------------------------------
 # Note: In ParaView FindPythonLibs.cmake module is additionally defined in VTK
 # and overides the default module from CMake. As a consequence PYTHON_ADD_MODULE

ThirdParty/mpi4py/vtkmpi4py/src/lib-mpi/config/mpi-20.h

@@ -290,7 +290,9 @@
 #define PyMPI_HAVE_MPI_File_call_errhandler 1
 #define PyMPI_HAVE_MPI_Datarep_conversion_function 1
 #define PyMPI_HAVE_MPI_Datarep_extent_function 1
+#ifndef PyMPI_MISSING_MPI_CONVERSION_FN_NULL
 #define PyMPI_HAVE_MPI_CONVERSION_FN_NULL 1
+#endif
 #define PyMPI_HAVE_MPI_MAX_DATAREP_STRING 1
 #define PyMPI_HAVE_MPI_Register_datarep 1
 #define PyMPI_HAVE_MPI_ERR_FILE 1