Temporary header file '/tmp/3iUrS80WQu/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
#ifdef __cplusplus
// C17 compat layer
#define _Alignof(type) alignof(type)
#endif
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/mupdf/fitz/archive.h"
  #include "/usr/include/mupdf/fitz/band-writer.h"
  #include "/usr/include/mupdf/fitz/bidi.h"
  #include "/usr/include/mupdf/fitz/bitmap.h"
  #include "/usr/include/mupdf/fitz/buffer.h"
  #include "/usr/include/mupdf/fitz/color.h"
  #include "/usr/include/mupdf/fitz/compress.h"
  #include "/usr/include/mupdf/fitz/compressed-buffer.h"
  #include "/usr/include/mupdf/fitz/config.h"
  #include "/usr/include/mupdf/fitz/context.h"
  #include "/usr/include/mupdf/fitz/crypt.h"
  #include "/usr/include/mupdf/fitz/device.h"
  #include "/usr/include/mupdf/fitz/display-list.h"
  #include "/usr/include/mupdf/fitz/document.h"
  #include "/usr/include/mupdf/fitz/export.h"
  #include "/usr/include/mupdf/fitz/filter.h"
  #include "/usr/include/mupdf/fitz/font.h"
  #include "/usr/include/mupdf/fitz/geometry.h"
  #include "/usr/include/mupdf/fitz/getopt.h"
  #include "/usr/include/mupdf/fitz/glyph-cache.h"
  #include "/usr/include/mupdf/fitz/glyph.h"
  #include "/usr/include/mupdf/fitz/hash.h"
  #include "/usr/include/mupdf/fitz/image.h"
  #include "/usr/include/mupdf/fitz/link.h"
  #include "/usr/include/mupdf/fitz/log.h"
  #include "/usr/include/mupdf/fitz/outline.h"
  #include "/usr/include/mupdf/fitz/output-svg.h"
  #include "/usr/include/mupdf/fitz/output.h"
  #include "/usr/include/mupdf/fitz/path.h"
  #include "/usr/include/mupdf/fitz/pixmap.h"
  #include "/usr/include/mupdf/fitz/pool.h"
  #include "/usr/include/mupdf/fitz/separation.h"
  #include "/usr/include/mupdf/fitz/shade.h"
  #include "/usr/include/mupdf/fitz/store.h"
  #include "/usr/include/mupdf/fitz/story-writer.h"
  #include "/usr/include/mupdf/fitz/story.h"
  #include "/usr/include/mupdf/fitz/stream.h"
  #include "/usr/include/mupdf/fitz/string-util.h"
  #include "/usr/include/mupdf/fitz/structured-text.h"
  #include "/usr/include/mupdf/fitz/system.h"
  #include "/usr/include/mupdf/fitz/text.h"
  #include "/usr/include/mupdf/fitz/track-usage.h"
  #include "/usr/include/mupdf/fitz/transition.h"
  #include "/usr/include/mupdf/fitz/tree.h"
  #include "/usr/include/mupdf/fitz/types.h"
  #include "/usr/include/mupdf/fitz/util.h"
  #include "/usr/include/mupdf/fitz/version.h"
  #include "/usr/include/mupdf/fitz/write-pixmap.h"
  #include "/usr/include/mupdf/fitz/writer.h"
  #include "/usr/include/mupdf/fitz/xml.h"
  #include "/usr/include/mupdf/fitz.h"
  #include "/usr/include/mupdf/memento.h"
  #include "/usr/include/mupdf/pdf/annot.h"
  #include "/usr/include/mupdf/pdf/clean.h"
  #include "/usr/include/mupdf/pdf/cmap.h"
  #include "/usr/include/mupdf/pdf/crypt.h"
  #include "/usr/include/mupdf/pdf/document.h"
  #include "/usr/include/mupdf/pdf/event.h"
  #include "/usr/include/mupdf/pdf/font.h"
  #include "/usr/include/mupdf/pdf/form.h"
  #include "/usr/include/mupdf/pdf/interpret.h"
  #include "/usr/include/mupdf/pdf/javascript.h"
  #include "/usr/include/mupdf/pdf/name-table.h"
  #include "/usr/include/mupdf/pdf/object.h"
  #include "/usr/include/mupdf/pdf/page.h"
  #include "/usr/include/mupdf/pdf/parse.h"
  #include "/usr/include/mupdf/pdf/resource.h"
  #include "/usr/include/mupdf/pdf/xref.h"
  #include "/usr/include/mupdf/pdf.h"
  #include "/usr/include/mupdf/ucdn.h"

  // add classes
  _G_fpos64_t* tmp_add_class_0;
  _G_fpos_t* tmp_add_class_1;
  _IO_cookie_io_functions_t* tmp_add_class_2;
  fz_archive* tmp_add_class_3;
  fz_band_writer* tmp_add_class_4;
  fz_colorspace* tmp_add_class_5;
  fz_context* tmp_add_class_6;
  fz_device* tmp_add_class_7;
  fz_document* tmp_add_class_8;
  fz_document_handler* tmp_add_class_9;
  fz_document_writer* tmp_add_class_10;
  fz_font* tmp_add_class_11;
  fz_image* tmp_add_class_12;
  fz_layout_char* tmp_add_class_13;
  fz_layout_line* tmp_add_class_14;
  fz_link* tmp_add_class_15;
  fz_outline* tmp_add_class_16;
  fz_outline_iterator* tmp_add_class_17;
  fz_output* tmp_add_class_18;
  fz_page* tmp_add_class_19;
  fz_pixmap* tmp_add_class_20;
  fz_stext_block* tmp_add_class_21;
  fz_stext_char* tmp_add_class_22;
  fz_stext_line* tmp_add_class_23;
  fz_storable* tmp_add_class_24;
  fz_stream* tmp_add_class_25;
  fz_text_span* tmp_add_class_26;
  pdf_cmap* tmp_add_class_27;
  pdf_cycle_list* tmp_add_class_28;
  pdf_doc_event* tmp_add_class_29;
  pdf_document* tmp_add_class_30;
  pdf_embedded_file_params* tmp_add_class_31;
  pdf_js_console* tmp_add_class_32;
  pdf_page* tmp_add_class_33;
  pdf_pkcs7_signer* tmp_add_class_34;
  pdf_pkcs7_verifier* tmp_add_class_35;
  pdf_processor* tmp_add_class_36;
  pdf_unsaved_sig* tmp_add_class_37;
  pdf_xref* tmp_add_class_38;
  pdf_xref_subsec* tmp_add_class_39;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/3iUrS80WQu/dump1.h"