Temporary header file '/tmp/n3SuYu9Dul/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/tcl8.6/tcl.h"
  #include "/usr/include/jkAudIO.h"
  #include "/usr/include/jkSound.h"
  #include "/usr/include/snack.h"
  #include "/usr/include/snackDecls.h"

  // add classes
  ADesc* tmp_add_class_0;
  MixerLink* tmp_add_class_1;
  SnackFileFormat* tmp_add_class_2;
  SnackFilter* tmp_add_class_3;
  SnackLinkedFileInfo* tmp_add_class_4;
  SnackStreamInfo* tmp_add_class_5;
  SnackStubs* tmp_add_class_6;
  Snack_FileFormat* tmp_add_class_7;
  Snack_FilterType* tmp_add_class_8;
  Sound* tmp_add_class_9;
  TclPlatStubs* tmp_add_class_10;
  TclStubs* tmp_add_class_11;
  Tcl_CallFrame* tmp_add_class_12;
  Tcl_ChannelType* tmp_add_class_13;
  Tcl_CmdInfo* tmp_add_class_14;
  Tcl_Config* tmp_add_class_15;
  Tcl_DString* tmp_add_class_16;
  Tcl_EncodingType* tmp_add_class_17;
  Tcl_Event* tmp_add_class_18;
  Tcl_Filesystem* tmp_add_class_19;
  Tcl_GlobTypeData* tmp_add_class_20;
  Tcl_HashEntry* tmp_add_class_21;
  Tcl_HashKeyType* tmp_add_class_22;
  Tcl_HashSearch* tmp_add_class_23;
  Tcl_HashTable* tmp_add_class_24;
  Tcl_Interp* tmp_add_class_25;
  Tcl_Namespace* tmp_add_class_26;
  Tcl_NotifierProcs* tmp_add_class_27;
  Tcl_Obj* tmp_add_class_28;
  Tcl_ObjType* tmp_add_class_29;
  Tcl_Parse* tmp_add_class_30;
  Tcl_RegExpIndices* tmp_add_class_31;
  Tcl_RegExpInfo* tmp_add_class_32;
  Tcl_SavedResult* tmp_add_class_33;
  Tcl_Time* tmp_add_class_34;
  Tcl_Token* tmp_add_class_35;
  Tcl_Value* tmp_add_class_36;
  _G_fpos64_t* tmp_add_class_37;
  _G_fpos_t* tmp_add_class_38;
  _IO_cookie_io_functions_t* tmp_add_class_39;
  jkCallback* tmp_add_class_40;
  jkQueuedSound* tmp_add_class_41;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/n3SuYu9Dul/dump1.h"  -I/usr/include/tcl8.6 -I/usr/include/linux/usb