If starpu and mpi are enabled than enable starpu_mpi

CMakeLists.txt

@@ -262,6 +262,11 @@ endif()
 
 if( ScalFMM_USE_STARPU )
     SET(STARPU_LIBRARIES " -L$ENV{STARPU_LIB}; -lstarpu-1.1") # CACHE STRING "Set your STARPU flags"
+    
+    if(ScalFMM_USE_MPI)
+        SET(STARPU_LIBRARIES "${STARPU_LIBRARIES} -lstarpumpi-1.1")
+    endif()
+    
     SET(STARPU_INCLUDES "$ENV{STARPU_INC}" ) # CACHE STRING "Set your STARPU flags"
     SET(SCALFMM_LIBRARIES "${SCALFMM_LIBRARIES}; ${STARPU_LIBRARIES}")  
     # SET(SCALFMM_INCLUDES "${SCALFMM_INCLUDES}; ${STARPU_INCLUDES}")