Temporary header file '/tmp/GZx9y0d_9g/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/arm-linux-gnueabihf/libavformat/avformat.h"
  #include "/usr/include/arm-linux-gnueabihf/libavformat/avio.h"
  #include "/usr/include/arm-linux-gnueabihf/libavformat/version.h"
  #include "/usr/include/arm-linux-gnueabihf/libavformat/version_major.h"

  // add classes
  AVBufferRef* tmp_add_class_0;
  AVCPBProperties* tmp_add_class_1;
  AVChannelCustom* tmp_add_class_2;
  AVChannelLayout* tmp_add_class_3;
  AVChapter* tmp_add_class_4;
  AVClass* tmp_add_class_5;
  AVCodec* tmp_add_class_6;
  AVCodecHWConfig* tmp_add_class_7;
  AVCodecParameters* tmp_add_class_8;
  AVDictionaryEntry* tmp_add_class_9;
  AVFormatContext* tmp_add_class_10;
  AVFrame* tmp_add_class_11;
  AVFrameSideData* tmp_add_class_12;
  AVHWDeviceContext* tmp_add_class_13;
  AVHWFramesConstraints* tmp_add_class_14;
  AVHWFramesContext* tmp_add_class_15;
  AVIOContext* tmp_add_class_16;
  AVIODirContext* tmp_add_class_17;
  AVIODirEntry* tmp_add_class_18;
  AVIOInterruptCB* tmp_add_class_19;
  AVIndexEntry* tmp_add_class_20;
  AVInputFormat* tmp_add_class_21;
  AVOutputFormat* tmp_add_class_22;
  AVPacket* tmp_add_class_23;
  AVPacketList* tmp_add_class_24;
  AVPacketSideData* tmp_add_class_25;
  AVPanScan* tmp_add_class_26;
  AVProbeData* tmp_add_class_27;
  AVProducerReferenceTime* tmp_add_class_28;
  AVProfile* tmp_add_class_29;
  AVProgram* tmp_add_class_30;
  AVRational* tmp_add_class_31;
  AVRegionOfInterest* tmp_add_class_32;
  AVStream* tmp_add_class_33;
  _G_fpos64_t* tmp_add_class_34;
  _G_fpos_t* tmp_add_class_35;
  _IO_cookie_io_functions_t* tmp_add_class_36;
  av_intfloat32* tmp_add_class_37;
  av_intfloat64* tmp_add_class_38;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/GZx9y0d_9g/dump1.h"