Temporary header file '/tmp/_FCX_tvw2h/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
#ifdef __cplusplus
// C17 compat layer
#define _Alignof(type) alignof(type)
#endif
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/sidplay/utils/SidDatabase.h"
  #include "/usr/include/sidplay/utils/SidFilter.h"
  #include "/usr/include/sidplay/utils/SidTuneMod.h"
  #include "/usr/include/sidplay/utils/SidUsage.h"
  #include "/usr/include/sidplay/utils/libini.h"

  // add classes
  SidDatabase* tmp_add_class_0;
  SidFilter* tmp_add_class_1;
  SidTune* tmp_add_class_2;
  SidTuneInfo* tmp_add_class_3;
  SidTuneMod* tmp_add_class_4;
  SidUsage* tmp_add_class_5;
  _G_fpos64_t* tmp_add_class_6;
  _G_fpos_t* tmp_add_class_7;
  _IO_cookie_io_functions_t* tmp_add_class_8;
  sid2_usage_t* tmp_add_class_9;
  sid_usage_t* tmp_add_class_10;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/_FCX_tvw2h/dump1.h"