Temporary header file '/tmp/gekgKawFpP/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

  // add includes
  #include "/usr/include/speex/speex.h"
  #include "/usr/include/speex/speex_bits.h"
  #include "/usr/include/speex/speex_callbacks.h"
  #include "/usr/include/speex/speex_config_types.h"
  #include "/usr/include/speex/speex_header.h"
  #include "/usr/include/speex/speex_stereo.h"
  #include "/usr/include/speex/speex_types.h"

  // add classes
  SpeexBits* tmp_add_class_0;
  SpeexCallback* tmp_add_class_1;
  SpeexHeader* tmp_add_class_2;
  SpeexMode* tmp_add_class_3;
  SpeexStereoState* tmp_add_class_4;

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