Temporary header file '/tmp/xd4zHkqawo/dump1.h' with the following content will be compiled to create GCC translation unit dump:

  // add defines
  #define __STDC_VERSION__ 201710L
#define _TIME_BITS 64
#define _FILE_OFFSET_BITS 64
#define _GXX_NULLPTR_T
#define CLUTTER_ENABLE_COMPOSITOR_API 1
#define _REGEX_NELTS(n)
#define _Atomic
#define PACKED

  // add includes
  #include "/usr/include/jack/control.h"
  #include "/usr/include/jack/intclient.h"
  #include "/usr/include/jack/jack.h"
  #include "/usr/include/jack/jslist.h"
  #include "/usr/include/jack/metadata.h"
  #include "/usr/include/jack/midiport.h"
  #include "/usr/include/jack/net.h"
  #include "/usr/include/jack/ringbuffer.h"
  #include "/usr/include/jack/session.h"
  #include "/usr/include/jack/statistics.h"
  #include "/usr/include/jack/systemdeps.h"
  #include "/usr/include/jack/thread.h"
  #include "/usr/include/jack/transport.h"
  #include "/usr/include/jack/types.h"
  #include "/usr/include/jack/uuid.h"
  #include "/usr/include/jack/weakjack.h"
  #include "/usr/include/jack/weakmacros.h"

  // add classes
  _JSList* tmp_add_class_0;
  _jack_latency_range* tmp_add_class_1;
  _jack_midi_event* tmp_add_class_2;
  _jack_position* tmp_add_class_3;
  _jack_session_event* tmp_add_class_4;
  jackctl_parameter_value* tmp_add_class_5;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/xd4zHkqawo/dump1.h"