Added MPICH_SKIP_MPICXX and OMPI_SKIP_CXX to H5public.h to avoid inadvertant

linking to the deprecated MPI C++ wrappers. Fixes HDFFV-10893.

release_docs/RELEASE.txt

@@ -808,6 +808,19 @@ Bug Fixes since HDF5-1.10.2 release
 
       (DER - 2018/02/26, HDFFV-10356)
 
+    - Inappropriate linking with deprecated MPI C++ libraries
+
+      HDF5 does not define *_SKIP_MPICXX in the public headers, so applications
+      can inadvertently wind up linking to the deprecated MPI C++ wrappers.
+
+      MPICH_SKIP_MPICXX and OMPI_SKIP_MPICXX have both been defined in H5public.h
+      so this should no longer be an issue. HDF5 makes no use of the deprecated
+      MPI C++ wrappers.
+
+      (DER - 2019/09/17, HDFFV-10893)
+
+
+
     Configuration
     -------------
     - Applied patches to address Cywin build issues

src/H5public.h

@@ -57,6 +57,9 @@
 #   include <stddef.h>
 #endif
 #ifdef H5_HAVE_PARALLEL
+/* Don't link against MPI C++ bindings */
+#   define MPICH_SKIP_MPICXX 1
+#   define OMPI_SKIP_MPICXX 1
 #   include <mpi.h>
 #ifndef MPI_FILE_NULL		/*MPIO may be defined in mpi.h already       */
 #   include <mpio.h>