more undefined references to 'fftw_*" and ld returned 1 exit status when doing "make mpi" in /src

Hello lammps users,

I’m trying to compile lammps11-Aug17. When I do “make mpi” in /src, I got the error:

fft3d.o: In function fft_3d': /home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/../fft3d.cpp:117: undefined reference to fftw_execute_dft’
/home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/…/fft3d.cpp:156: undefined reference to fftw_execute_dft' /home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/../fft3d.cpp:195: undefined reference to fftw_execute_dft’
fft3d.o: In function fft_3d_destroy_plan': /home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/../fft3d.cpp:676: undefined reference to fftw_destroy_plan’
/home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/…/fft3d.cpp:677: undefined reference to fftw_destroy_plan' /home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/../fft3d.cpp:678: undefined reference to fftw_destroy_plan’
/home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/…/fft3d.cpp:679: undefined reference to fftw_destroy_plan' /home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/../fft3d.cpp:680: undefined reference to fftw_destroy_plan’
fft3d.o:/home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/…/fft3d.cpp:681: more undefined references to fftw_destroy_plan' follow fft3d.o: In function fft_3d_create_plan’:
/home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/…/fft3d.cpp:570: undefined reference to fftw_plan_many_dft' /home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/../fft3d.cpp:575: undefined reference to fftw_plan_many_dft’
/home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/…/fft3d.cpp:580: undefined reference to fftw_plan_many_dft' /home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/../fft3d.cpp:585: undefined reference to fftw_plan_many_dft’
/home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/…/fft3d.cpp:590: undefined reference to fftw_plan_many_dft' fft3d.o:/home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/../fft3d.cpp:595: more undefined references to fftw_plan_many_dft’ follow
fft3d.o: In function fft_1d_only': /home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/../fft3d.cpp:828: undefined reference to fftw_execute_dft’
/home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/…/fft3d.cpp:833: undefined reference to fftw_execute_dft' /home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/../fft3d.cpp:838: undefined reference to fftw_execute_dft’
/home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/…/fft3d.cpp:828: undefined reference to fftw_execute_dft' /home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/../fft3d.cpp:833: undefined reference to fftw_execute_dft’
fft3d.o:/home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi/…/fft3d.cpp:838: more undefined references to fftw_execute_dft' follow collect2: ld returned 1 exit status make[1]: *** [../lmp_mpi] Error 1 make[1]: Leaving directory /home/heat/lammps11-Aug17/lammps-11Aug17/src/Obj_mpi’
make: *** [mpi] Error 2

The version of my software is listed as below:
fftw-3.3.6-p12
mpich-3.0.1
lammps-11Aug17

Could you please help me fix this error?

Many thanks,
Tingyu