Temporary header file '/tmp/BSz_LLdG0M/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

  // add includes
  #include "/usr/include/libixion-0.17/ixion/address.hpp"
  #include "/usr/include/libixion-0.17/ixion/address_iterator.hpp"
  #include "/usr/include/libixion-0.17/ixion/cell.hpp"
  #include "/usr/include/libixion-0.17/ixion/cell_access.hpp"
  #include "/usr/include/libixion-0.17/ixion/compute_engine.hpp"
  #include "/usr/include/libixion-0.17/ixion/config.hpp"
  #include "/usr/include/libixion-0.17/ixion/dirty_cell_tracker.hpp"
  #include "/usr/include/libixion-0.17/ixion/document.hpp"
  #include "/usr/include/libixion-0.17/ixion/env.hpp"
  #include "/usr/include/libixion-0.17/ixion/exceptions.hpp"
  #include "/usr/include/libixion-0.17/ixion/formula.hpp"
  #include "/usr/include/libixion-0.17/ixion/formula_function_opcode.hpp"
  #include "/usr/include/libixion-0.17/ixion/formula_name_resolver.hpp"
  #include "/usr/include/libixion-0.17/ixion/formula_opcode.hpp"
  #include "/usr/include/libixion-0.17/ixion/formula_result.hpp"
  #include "/usr/include/libixion-0.17/ixion/formula_tokens.hpp"
  #include "/usr/include/libixion-0.17/ixion/formula_tokens_fwd.hpp"
  #include "/usr/include/libixion-0.17/ixion/global.hpp"
  #include "/usr/include/libixion-0.17/ixion/info.hpp"
  #include "/usr/include/libixion-0.17/ixion/interface/formula_model_access.hpp"
  #include "/usr/include/libixion-0.17/ixion/interface/session_handler.hpp"
  #include "/usr/include/libixion-0.17/ixion/interface/table_handler.hpp"
  #include "/usr/include/libixion-0.17/ixion/macros.hpp"
  #include "/usr/include/libixion-0.17/ixion/matrix.hpp"
  #include "/usr/include/libixion-0.17/ixion/model_context.hpp"
  #include "/usr/include/libixion-0.17/ixion/model_iterator.hpp"
  #include "/usr/include/libixion-0.17/ixion/module.hpp"
  #include "/usr/include/libixion-0.17/ixion/named_expressions_iterator.hpp"
  #include "/usr/include/libixion-0.17/ixion/table.hpp"
  #include "/usr/include/libixion-0.17/ixion/types.hpp"

  // add namespaces
  namespace ixion{typedef int tmp_add_type_1;}
  ixion::tmp_add_type_1 tmp_add_func_1(){return 0;};

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/BSz_LLdG0M/dump1.h"

In file included from /usr/include/libixion-0.17/ixion/cell.hpp:12,
                 from /tmp/BSz_LLdG0M/dump1.h:13:
/usr/include/libixion-0.17/ixion/formula_tokens_fwd.hpp:11:10: fatal error: boost/intrusive_ptr.hpp: No such file or directory
   11 | #include <boost/intrusive_ptr.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.