ENH: remove use of undefined cdr

Modules/FindMPI.cmake

@@ -148,7 +148,8 @@ elseif (MPI_COMPILE_CMDLINE)
     set(MPI_LIBRARY "MPI_LIBRARY-NOTFOUND")
   endif (MPI_NUMLIBS GREATER 0)
   if (MPI_NUMLIBS GREATER 1)
-    cdr(MPI_EXTRA_LIBRARY ${MPI_LIBRARIES})
+    set(MPI_EXTRA_LIBRARY ${MPI_LIBRARIES})
+    list(REMOVE_AT MPI_EXTRA_LIBRARY 0)
   else (MPI_NUMLIBS GREATER 1)
     set(MPI_EXTRA_LIBRARY "MPI_EXTRA_LIBRARY-NOTFOUND")
   endif (MPI_NUMLIBS GREATER 1)