I have solved the problem several months ago, but due to several emails I send the solution for solving the problem
1- In the following path open the Makefile.openmpi with the text editor
Lammps\-12Apr13/src/Make
2-Then for the following variables remove the values and let UBUNTU use the default values,
FFT_INC =
FFT\_PATH =
FFT\_LIB =
3- Save the file and run the "Make Openmpi" again.
regards,
Mehdi