Temporary header file '/tmp/alC54dxKXq/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/hamlib/ampclass.h"
  #include "/usr/include/hamlib/rigclass.h"
  #include "/usr/include/hamlib/rotclass.h"

  // add classes
  Amplifier* tmp_add_class_0;
  Rig* tmp_add_class_1;
  RigException* tmp_add_class_2;
  Rotator* tmp_add_class_3;
  _G_fpos64_t* tmp_add_class_4;
  _G_fpos_t* tmp_add_class_5;
  _IO_cookie_io_functions_t* tmp_add_class_6;
  amp* tmp_add_class_7;
  amp_caps* tmp_add_class_8;
  amp_state* tmp_add_class_9;
  cal_table* tmp_add_class_10;
  cal_table_float* tmp_add_class_11;
  chan_list* tmp_add_class_12;
  channel* tmp_add_class_13;
  channel_cap* tmp_add_class_14;
  confparams* tmp_add_class_15;
  ext_list* tmp_add_class_16;
  filter_list* tmp_add_class_17;
  freq_range_list* tmp_add_class_18;
  gran* tmp_add_class_19;
  hamlib_port* tmp_add_class_20;
  hamlib_port_deprecated* tmp_add_class_21;
  rig_cache* tmp_add_class_22;
  rig_callbacks* tmp_add_class_23;
  rig_caps* tmp_add_class_24;
  rig_spectrum_avg_mode* tmp_add_class_25;
  rig_spectrum_line* tmp_add_class_26;
  rig_spectrum_scope* tmp_add_class_27;
  rig_state* tmp_add_class_28;
  rot_caps* tmp_add_class_29;
  rot_state* tmp_add_class_30;
  s_rig* tmp_add_class_31;
  s_rot* tmp_add_class_32;
  tuning_step_list* tmp_add_class_33;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/alC54dxKXq/dump1.h"