PIO make fail

# cmake -DPIO_ENABLE_TIMING=OFF /home/collins/libraries/source/ParallelIO
-- The C compiler identification is GNU 4.8.5
-- The Fortran compiler identification is GNU
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working Fortran compiler: /usr/bin/gfortran
-- Check for working Fortran compiler: /usr/bin/gfortran  -- works
-- Detecting Fortran compiler ABI info
-- Detecting Fortran compiler ABI info - done
-- Checking whether /usr/bin/gfortran supports Fortran 90
-- Checking whether /usr/bin/gfortran supports Fortran 90 -- yes
-- Importing CMake_Fortran_utils
-- Importing CMake_Fortran_utils - success
-- Found MPI_C: /home/collins/libraries/openmpi/lib/libmpi.so  
-- Found MPI_Fortran: /home/collins/libraries/openmpi/lib/libmpi_usempi.so;/home/collins/libraries/openmpi/lib/libmpi_mpifh.so;/home/collins/libraries/openmpi/lib/libmpi.so  
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of MPI_Offset
-- Check size of MPI_Offset - done
-- Check if the system is big endian
-- Searching 16 bit integer
-- Check size of unsigned short
-- Check size of unsigned short - done
-- Using unsigned short
-- Check if the system is big endian - little endian
-- Found NetCDF_C: /home/collins/libraries/netcdf/lib/libnetcdf.so  
-- Checking NetCDF version
-- Checking NetCDF version - 4.6.1./*!<
-- Checking whether NetCDF has parallel support
-- Checking whether NetCDF has parallel support - no
-- Looking for nc_set_log_level
-- Looking for nc_set_log_level - not found
-- Found PnetCDF_C: /home/collins/libraries/pnetcdf/lib/libpnetcdf.a  
-- Checking PnetCDF version
-- Checking PnetCDF version - 1.10.0
-- Looking for ncmpi_get_varn
-- Looking for ncmpi_get_varn - not found
-- Check size of size_t
-- Check size of size_t - done
-- Check size of long long
-- Check size of long long - done
-- Checking whether Fortran compiler supports c_sizeof
-- Checking whether Fortran compiler supports c_sizeof - no
-- Found Git: /usr/bin/git (found version "1.8.3.1") 
-- Checking whether MPIIO is supported
-- Checking whether MPIIO is supported - no
-- MPIIO failed verification and therefore disabled.
-- Checking whether MPI Fortran module is supported
-- Checking whether MPI Fortran module is supported - yes
-- MPI Fortran module verified and enabled.
-- Found NetCDF_Fortran: /home/collins/libraries/netcdf/lib/libnetcdff.so  
-- Found PnetCDF_Fortran: /home/collins/libraries/pnetcdf/lib/libpnetcdf.a  
-- Looking for ncmpi_get_varn
-- Looking for ncmpi_get_varn - not found
-- Cannot build performance test without gptl timing library
-- Could NOT find MPE_C (missing:  MPE_C_LIBRARY MPE_C_INCLUDE_DIR) 
-- Found Doxygen: /usr/bin/doxygen (found version "1.8.5") 
-- Configuring done
-- Generating done
-- Build files have been written to: /home/collins/libraries/pio

# make
Scanning dependencies of target pioc
[  3%] Building C object src/clib/CMakeFiles/pioc.dir/topology.c.o
[  7%] Building C object src/clib/CMakeFiles/pioc.dir/pio_file.c.o
In file included from /home/collins/libraries/source/ParallelIO/src/clib/pio_file.c:6:0:
/home/collins/libraries/source/ParallelIO/src/clib/pio.h:16:17: fatal error: mpi.h: No such file or directory
 #include <mpi.h>
                 ^
compilation terminated.
make[2]: *** [src/clib/CMakeFiles/pioc.dir/pio_file.c.o] Error 1
make[1]: *** [src/clib/CMakeFiles/pioc.dir/all] Error 2
make: *** [all] Error 2

export FC=mpif90
export CC=mpicc
git clone https://github.com/NCAR/ParallelIO
cd ParallelIO
export PIOSRC=`pwd`
cd ..
mkdir pio_build
cd pio_build
cmake -DNetCDF_C_PATH=$NETCDF -DNetCDF_Fortran_PATH=$NETCDF -DPnetCDF_PATH=$PNETCDF -DCMAKE_INSTALL_PREFIX=/where/to/install/pio2 -DPIO_ENABLE_TIMING=OFF $PIOSRC
make
make install