Print total compile time at end of build

freenginx.sh

@@ -248,4 +248,5 @@ run make -j "$JOBS"
   echo
   echo "Log:     $LOG"
   echo "Install: cd $SRC && sudo make install"
+  printf 'Total compile time: %dm %02ds\n' $((SECONDS / 60)) $((SECONDS % 60))
 } | tee -a "$LOG"