# Specfem3D Cartesian Installation on Macbook M2
**URL:** https://community.geodynamics.org/t/specfem3d-cartesian-installation-on-macbook-m2/3236
**Category:** General
**Tags:** installation, specfem3d
**Created:** [January 17, 2024, 5:16pm UTC](https://community.geodynamics.org/t/specfem3d-cartesian-installation-on-macbook-m2/3236 "2024-01-17T17:16:28Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@athira981](https://community.geodynamics.org/u/athira981)
#### Post date: [January 17, 2024, 5:16pm UTC](https://community.geodynamics.org/t/specfem3d-cartesian-installation-on-macbook-m2/3236/1 "2024-01-17T17:16:28Z")
Hi,
I am having the following error when trying to install Specfem3D Cartesian on MacOS M2 machine.
**bash-3.2$ ./configure FC=gfortran CC=gcc MPIFC=mpif90 --with-mpi**
**.**
**.**
**.**
**checking for mpi.h… no**
**configure: error: MPI header not found; try setting MPI\_INC.**
## --------------------------------------------------------------------
I made it sure that all mpi libraries are installed.
**bash-3.2$ mpi**
**mpic++ mpicc mpicxx mpiexec mpif77 mpif90 mpifort mpioutil mpirun**
The error persists, and I’m seeking assistance to understand the reason behind it. Additionally, I am looking for any suggested solutions that would enable me to successfully install it on my machine.
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### Author:  [@bangerth](https://community.geodynamics.org/u/bangerth)
#### Post date: [January 17, 2024, 6:03pm UTC](https://community.geodynamics.org/t/specfem3d-cartesian-installation-on-macbook-m2/3236/2 "2024-01-17T18:03:25Z")
@athira981
`mpi.h` is often in a package called `mpi-dev` or `openmpi-dev` of `mpich-dev` or similar. You may want to check whether you have that installed. In fact, you should probably check first whether you really do have the `mpi.h` file or whether the error message is true: That there is no `mpi.h` file.
Best
W.