Temporary header file '/tmp/hZtv46sSGd/dump1.h' with the following content will be compiled to create GCC translation unit dump:

  // add defines
  #define __STDC_VERSION__ 201710L
#define _GXX_NULLPTR_T
#define CLUTTER_ENABLE_COMPOSITOR_API 1
#define _REGEX_NELTS(n)
#define _Atomic
#define PACKED
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/dolfinx/common/IndexMap.h"
  #include "/usr/include/dolfinx/common/MPI.h"
  #include "/usr/include/dolfinx/common/Scatterer.h"
  #include "/usr/include/dolfinx/common/Table.h"
  #include "/usr/include/dolfinx/common/TimeLogManager.h"
  #include "/usr/include/dolfinx/common/TimeLogger.h"
  #include "/usr/include/dolfinx/common/Timer.h"
  #include "/usr/include/dolfinx/common/defines.h"
  #include "/usr/include/dolfinx/common/dolfin_common.h"
  #include "/usr/include/dolfinx/common/dolfin_doc.h"
  #include "/usr/include/dolfinx/common/log.h"
  #include "/usr/include/dolfinx/common/loguru.hpp"
  #include "/usr/include/dolfinx/common/math.h"
  #include "/usr/include/dolfinx/common/sort.h"
  #include "/usr/include/dolfinx/common/timing.h"
  #include "/usr/include/dolfinx/common/utils.h"
  #include "/usr/include/dolfinx/common/version.h"
  #include "/usr/include/dolfinx/fem/Constant.h"
  #include "/usr/include/dolfinx/fem/CoordinateElement.h"
  #include "/usr/include/dolfinx/fem/DirichletBC.h"
  #include "/usr/include/dolfinx/fem/DofMap.h"
  #include "/usr/include/dolfinx/fem/ElementDofLayout.h"
  #include "/usr/include/dolfinx/fem/Expression.h"
  #include "/usr/include/dolfinx/fem/FiniteElement.h"
  #include "/usr/include/dolfinx/fem/Form.h"
  #include "/usr/include/dolfinx/fem/Function.h"
  #include "/usr/include/dolfinx/fem/FunctionSpace.h"
  #include "/usr/include/dolfinx/fem/assemble_matrix_impl.h"
  #include "/usr/include/dolfinx/fem/assemble_scalar_impl.h"
  #include "/usr/include/dolfinx/fem/assemble_vector_impl.h"
  #include "/usr/include/dolfinx/fem/assembler.h"
  #include "/usr/include/dolfinx/fem/discreteoperators.h"
  #include "/usr/include/dolfinx/fem/dofmapbuilder.h"
  #include "/usr/include/dolfinx/fem/dolfin_fem.h"
  #include "/usr/include/dolfinx/fem/interpolate.h"
  #include "/usr/include/dolfinx/fem/petsc.h"
  #include "/usr/include/dolfinx/fem/sparsitybuild.h"
  #include "/usr/include/dolfinx/fem/utils.h"
  #include "/usr/include/dolfinx/geometry/BoundingBoxTree.h"
  #include "/usr/include/dolfinx/geometry/dolfin_geometry.h"
  #include "/usr/include/dolfinx/geometry/gjk.h"
  #include "/usr/include/dolfinx/geometry/utils.h"
  #include "/usr/include/dolfinx/graph/AdjacencyList.h"
  #include "/usr/include/dolfinx/graph/dolfin_graph.h"
  #include "/usr/include/dolfinx/graph/ordering.h"
  #include "/usr/include/dolfinx/graph/partition.h"
  #include "/usr/include/dolfinx/graph/partitioners.h"
  #include "/usr/include/dolfinx/io/ADIOS2Writers.h"
  #include "/usr/include/dolfinx/io/HDF5Interface.h"
  #include "/usr/include/dolfinx/io/VTKFile.h"
  #include "/usr/include/dolfinx/io/XDMFFile.h"
  #include "/usr/include/dolfinx/io/cells.h"
  #include "/usr/include/dolfinx/io/dolfin_io.h"
  #include "/usr/include/dolfinx/io/vtk_utils.h"
  #include "/usr/include/dolfinx/io/xdmf_function.h"
  #include "/usr/include/dolfinx/io/xdmf_mesh.h"
  #include "/usr/include/dolfinx/io/xdmf_meshtags.h"
  #include "/usr/include/dolfinx/io/xdmf_read.h"
  #include "/usr/include/dolfinx/io/xdmf_utils.h"
  #include "/usr/include/dolfinx/la/MatrixCSR.h"
  #include "/usr/include/dolfinx/la/SparsityPattern.h"
  #include "/usr/include/dolfinx/la/Vector.h"
  #include "/usr/include/dolfinx/la/dolfin_la.h"
  #include "/usr/include/dolfinx/la/petsc.h"
  #include "/usr/include/dolfinx/la/slepc.h"
  #include "/usr/include/dolfinx/la/utils.h"
  #include "/usr/include/dolfinx/mesh/Geometry.h"
  #include "/usr/include/dolfinx/mesh/Mesh.h"
  #include "/usr/include/dolfinx/mesh/MeshTags.h"
  #include "/usr/include/dolfinx/mesh/Topology.h"
  #include "/usr/include/dolfinx/mesh/cell_types.h"
  #include "/usr/include/dolfinx/mesh/dolfin_mesh.h"
  #include "/usr/include/dolfinx/mesh/generation.h"
  #include "/usr/include/dolfinx/mesh/graphbuild.h"
  #include "/usr/include/dolfinx/mesh/permutationcomputation.h"
  #include "/usr/include/dolfinx/mesh/topologycomputation.h"
  #include "/usr/include/dolfinx/mesh/utils.h"
  #include "/usr/include/dolfinx/nls/NewtonSolver.h"
  #include "/usr/include/dolfinx/nls/dolfin_nls.h"
  #include "/usr/include/dolfinx/refinement/dolfin_refinement.h"
  #include "/usr/include/dolfinx/refinement/plaza.h"
  #include "/usr/include/dolfinx/refinement/refine.h"
  #include "/usr/include/dolfinx/refinement/utils.h"
  #include "/usr/include/dolfinx.h"

  // add namespaces
  namespace boost{typedef int tmp_add_type_1;}
  boost::tmp_add_type_1 tmp_add_func_1(){return 0;};
  namespace boost{namespace timer{typedef int tmp_add_type_2;}}
  boost::timer::tmp_add_type_2 tmp_add_func_2(){return 0;};
  namespace dolfinx{typedef int tmp_add_type_3;}
  dolfinx::tmp_add_type_3 tmp_add_func_3(){return 0;};
  namespace dolfinx{namespace common{typedef int tmp_add_type_4;}}
  dolfinx::common::tmp_add_type_4 tmp_add_func_4(){return 0;};
  namespace dolfinx{namespace graph{typedef int tmp_add_type_5;}}
  dolfinx::graph::tmp_add_type_5 tmp_add_func_5(){return 0;};
  namespace loguru{typedef int tmp_add_type_6;}
  loguru::tmp_add_type_6 tmp_add_func_6(){return 0;};

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/hZtv46sSGd/dump1.h"  -I/usr/include/dolfinx/common -I/usr/include/hdf5/openmpi -I/lib/python3/dist-packages/ffcx/codegeneration -I/lib/petscdir/petsc3.18/arm-linux-gnueabihf-real/include

In file included from /usr/include/dolfinx/common/IndexMap.h:11,
                 from /tmp/hZtv46sSGd/dump1.h:12:
/usr/include/dolfinx/common/MPI.h:26:10: fatal error: mpi.h: No such file or directory
   26 | #include <mpi.h>
      |          ^~~~~~~
compilation terminated.