Temporary header file '/tmp/uZvLMJ62Tt/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/miral/miral/add_init_callback.h"
  #include "/usr/include/miral/miral/append_event_filter.h"
  #include "/usr/include/miral/miral/application.h"
  #include "/usr/include/miral/miral/application_authorizer.h"
  #include "/usr/include/miral/miral/application_info.h"
  #include "/usr/include/miral/miral/canonical_window_manager.h"
  #include "/usr/include/miral/miral/command_line_option.h"
  #include "/usr/include/miral/miral/configuration_option.h"
  #include "/usr/include/miral/miral/cursor_theme.h"
  #include "/usr/include/miral/miral/display_configuration.h"
  #include "/usr/include/miral/miral/display_configuration_option.h"
  #include "/usr/include/miral/miral/external_client.h"
  #include "/usr/include/miral/miral/internal_client.h"
  #include "/usr/include/miral/miral/keymap.h"
  #include "/usr/include/miral/miral/lambda_as_function.h"
  #include "/usr/include/miral/miral/minimal_window_manager.h"
  #include "/usr/include/miral/miral/output.h"
  #include "/usr/include/miral/miral/prepend_event_filter.h"
  #include "/usr/include/miral/miral/runner.h"
  #include "/usr/include/miral/miral/set_command_line_handler.h"
  #include "/usr/include/miral/miral/set_terminator.h"
  #include "/usr/include/miral/miral/set_window_management_policy.h"
  #include "/usr/include/miral/miral/toolkit_event.h"
  #include "/usr/include/miral/miral/version.h"
  #include "/usr/include/miral/miral/wayland_extensions.h"
  #include "/usr/include/miral/miral/window.h"
  #include "/usr/include/miral/miral/window_info.h"
  #include "/usr/include/miral/miral/window_management_options.h"
  #include "/usr/include/miral/miral/window_management_policy.h"
  #include "/usr/include/miral/miral/window_manager_tools.h"
  #include "/usr/include/miral/miral/window_specification.h"
  #include "/usr/include/miral/miral/x11_support.h"
  #include "/usr/include/miral/miral/zone.h"

  // add namespaces
  namespace mir{typedef int tmp_add_type_1;}
  mir::tmp_add_type_1 tmp_add_func_1(){return 0;};
  namespace mir{namespace frontend{typedef int tmp_add_type_2;}}
  mir::frontend::tmp_add_type_2 tmp_add_func_2(){return 0;};
  namespace mir{namespace geometry{typedef int tmp_add_type_3;}}
  mir::geometry::tmp_add_type_3 tmp_add_func_3(){return 0;};
  namespace mir{namespace geometry{namespace generic{typedef int tmp_add_type_4;}}}
  mir::geometry::generic::tmp_add_type_4 tmp_add_func_4(){return 0;};
  namespace mir{namespace graphics{typedef int tmp_add_type_5;}}
  mir::graphics::tmp_add_type_5 tmp_add_func_5(){return 0;};
  namespace mir{namespace scene{typedef int tmp_add_type_6;}}
  mir::scene::tmp_add_type_6 tmp_add_func_6(){return 0;};
  namespace mir{namespace shell{typedef int tmp_add_type_7;}}
  mir::shell::tmp_add_type_7 tmp_add_func_7(){return 0;};
  namespace miral{typedef int tmp_add_type_8;}
  miral::tmp_add_type_8 tmp_add_func_8(){return 0;};
  namespace miral{namespace detail{typedef int tmp_add_type_9;}}
  miral::detail::tmp_add_type_9 tmp_add_func_9(){return 0;};
  namespace miral{namespace toolkit{typedef int tmp_add_type_10;}}
  miral::toolkit::tmp_add_type_10 tmp_add_func_10(){return 0;};

  // add classes
  _G_fpos64_t* tmp_add_class_0;
  _G_fpos_t* tmp_add_class_1;
  _IO_cookie_io_functions_t* tmp_add_class_2;
  xkb_rule_names* tmp_add_class_3;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/uZvLMJ62Tt/dump1.h"  -I/usr/include/mircore -I/usr/include/miral