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

  // add defines
  #define __STDC_VERSION__ 201710L
#define _FILE_OFFSET_BITS 64
#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/mrpt/system/include/mrpt/system/CConsoleRedirector.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/CControlledRateTimer.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/CDirectoryExplorer.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/CFileSystemWatcher.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/CGenericMemoryPool.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/CObservable.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/CObserver.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/COutputLogger.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/CRateTimer.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/CTicTac.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/CTimeLogger.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/WorkerThreadsPool.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/backtrace.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/crc.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/datetime.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/filesystem.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/md5.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/memory.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/mrptEvent.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/os.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/progress.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/scheduler.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/string_utils.h"
  #include "/usr/include/mrpt/system/include/mrpt/system/thread_name.h"

  // add namespaces
  namespace mrpt{typedef int tmp_add_type_1;}
  mrpt::tmp_add_type_1 tmp_add_func_1(){return 0;};
  namespace mrpt{namespace containers{typedef int tmp_add_type_2;}}
  mrpt::containers::tmp_add_type_2 tmp_add_func_2(){return 0;};
  namespace mrpt{namespace internal{typedef int tmp_add_type_3;}}
  mrpt::internal::tmp_add_type_3 tmp_add_func_3(){return 0;};
  namespace mrpt{namespace system{typedef int tmp_add_type_4;}}
  mrpt::system::tmp_add_type_4 tmp_add_func_4(){return 0;};
  namespace mrpt{namespace system{namespace os{typedef int tmp_add_type_5;}}}
  mrpt::system::os::tmp_add_type_5 tmp_add_func_5(){return 0;};
  namespace mrpt{namespace typemeta{typedef int tmp_add_type_6;}}
  mrpt::typemeta::tmp_add_type_6 tmp_add_func_6(){return 0;};
  namespace mrpt{namespace typemeta{namespace internal{typedef int tmp_add_type_7;}}}
  mrpt::typemeta::internal::tmp_add_type_7 tmp_add_func_7(){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;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/NPmWVWNVZi/dump1.h"  -I/usr/include/mrpt/typemeta/include -I/usr/include/mrpt/system/include -I/usr/include/mrpt/core/include -I/usr/include/mrpt/containers/include