Reg: installion

I am getting the following error while compiling lammps. I have given the right path to locate fftw. Can some one please help me regarding this issue.

make[1]: Entering directory /home/arun/Downloads/lmp/lammps/src/Obj_g++' g++ -g -O -DLAMMPS_GZIP -DLAMMPS_JPEG -DMPICH_SKIP_MPICXX -DFFT_FFTW -I/home/arun/Downloads/lmp/fftw2/inlcude -I/home/arun/Downloads/lmp/jpeg/include -c ../fft3d_wrap.cpp ../fft3d_wrap.cpp:14:17: fatal error: mpi.h: No such file or directory #include "mpi.h" ^ compilation terminated. make[1]: *** [fft3d_wrap.o] Error 1 make[1]: Leaving directory /home/arun/Downloads/lmp/lammps/src/Obj_g++’
make: *** [g++] Error 2


The error message is complaining about mpi, not fftw. You need to
install mpi. Without knowing what operating system you are using,
nobody can help you beyond that.

(For example, in ubuntu or debian, you would use this command to install mpi:

sudo apt-get install mpi-default-bin mpi-default-dev)