Temporary header file '/tmp/2qgifWyInw/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/dbus-c++-1/dbus-c++/api.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/connection.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/dbus.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/debug.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/dispatcher.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/ecore-integration.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/error.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/eventloop-integration.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/eventloop.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/glib-integration.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/interface.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/introspection.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/message.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/object.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/pendingcall.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/pipe.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/property.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/refptr_impl.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/server.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/types.h"
  #include "/usr/include/dbus-c++-1/dbus-c++/util.h"

  // add namespaces
  namespace DBus{typedef int tmp_add_type_1;}
  DBus::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/2qgifWyInw/dump1.h"

In file included from /tmp/2qgifWyInw/dump1.h:17:
/usr/include/dbus-c++-1/dbus-c++/ecore-integration.h:28:10: fatal error: Ecore.h: No such file or directory
   28 | #include <Ecore.h>
      |          ^~~~~~~~~
compilation terminated.