Temporary header file '/tmp/GVFnDPdOyc/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

  // add includes
  #include "/usr/include/webp/decode.h"
  #include "/usr/include/webp/demux.h"
  #include "/usr/include/webp/encode.h"
  #include "/usr/include/webp/mux.h"
  #include "/usr/include/webp/mux_types.h"
  #include "/usr/include/webp/types.h"

  // add classes
  WebPAnimDecoderOptions* tmp_add_class_0;
  WebPAnimEncoderOptions* tmp_add_class_1;
  WebPAnimInfo* tmp_add_class_2;
  WebPAuxStats* tmp_add_class_3;
  WebPBitstreamFeatures* tmp_add_class_4;
  WebPChunkIterator* tmp_add_class_5;
  WebPConfig* tmp_add_class_6;
  WebPData* tmp_add_class_7;
  WebPDecBuffer* tmp_add_class_8;
  WebPDecoderConfig* tmp_add_class_9;
  WebPDecoderOptions* tmp_add_class_10;
  WebPIterator* tmp_add_class_11;
  WebPMemoryWriter* tmp_add_class_12;
  WebPMuxAnimParams* tmp_add_class_13;
  WebPMuxFrameInfo* tmp_add_class_14;
  WebPPicture* tmp_add_class_15;
  WebPRGBABuffer* tmp_add_class_16;
  WebPYUVABuffer* tmp_add_class_17;

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