message: Enable sst without MPI
diff: @@ -10,7 +10,7 @@ add_library(sst
  cp/cp_common.c
  cp/ffs_marshal.c
  )
  -if(ADIOS2_SST_HAVE_LIBFABRIC AND ADIOS2_HAVE_MPI)
  +if(ADIOS2_SST_HAVE_LIBFABRIC)
  target_sources(sst PRIVATE dp/rdma_dp.c)
  target_link_libraries(sst PRIVATE libfabric::libfabric)
  set(CMAKE_REQUIRED_INCLUDES ${LIBFABRIC_INCLUDE_DIRS})
  