Temporary header file '/tmp/W94_rY3hyc/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/spatialindex/SpatialIndex.h"
  #include "/usr/include/spatialindex/capi/sidx_config.h"
  #include "/usr/include/spatialindex/LineSegment.h"
  #include "/usr/include/spatialindex/MVRTree.h"
  #include "/usr/include/spatialindex/MovingPoint.h"
  #include "/usr/include/spatialindex/MovingRegion.h"
  #include "/usr/include/spatialindex/Point.h"
  #include "/usr/include/spatialindex/RTree.h"
  #include "/usr/include/spatialindex/Region.h"
  #include "/usr/include/spatialindex/TPRTree.h"
  #include "/usr/include/spatialindex/TimePoint.h"
  #include "/usr/include/spatialindex/TimeRegion.h"
  #include "/usr/include/spatialindex/Version.h"
  #include "/usr/include/spatialindex/capi/BoundsQuery.h"
  #include "/usr/include/spatialindex/capi/CountVisitor.h"
  #include "/usr/include/spatialindex/capi/CustomStorage.h"
  #include "/usr/include/spatialindex/capi/DataStream.h"
  #include "/usr/include/spatialindex/capi/Error.h"
  #include "/usr/include/spatialindex/capi/IdVisitor.h"
  #include "/usr/include/spatialindex/capi/Index.h"
  #include "/usr/include/spatialindex/capi/LeafQuery.h"
  #include "/usr/include/spatialindex/capi/ObjVisitor.h"
  #include "/usr/include/spatialindex/capi/Utility.h"
  #include "/usr/include/spatialindex/capi/sidx_api.h"
  #include "/usr/include/spatialindex/capi/sidx_export.h"
  #include "/usr/include/spatialindex/capi/sidx_impl.h"
  #include "/usr/include/spatialindex/tools/PointerPool.h"
  #include "/usr/include/spatialindex/tools/PoolPointer.h"
  #include "/usr/include/spatialindex/tools/Tools.h"
  #include "/usr/include/spatialindex/tools/rand48.h"

  // add namespaces
  namespace SpatialIndex{typedef int tmp_add_type_1;}
  SpatialIndex::tmp_add_type_1 tmp_add_func_1(){return 0;};
  namespace SpatialIndex{namespace MVRTree{typedef int tmp_add_type_2;}}
  SpatialIndex::MVRTree::tmp_add_type_2 tmp_add_func_2(){return 0;};
  namespace SpatialIndex{namespace RTree{typedef int tmp_add_type_3;}}
  SpatialIndex::RTree::tmp_add_type_3 tmp_add_func_3(){return 0;};
  namespace SpatialIndex{namespace StorageManager{typedef int tmp_add_type_4;}}
  SpatialIndex::StorageManager::tmp_add_type_4 tmp_add_func_4(){return 0;};
  namespace SpatialIndex{namespace TPRTree{typedef int tmp_add_type_5;}}
  SpatialIndex::TPRTree::tmp_add_type_5 tmp_add_func_5(){return 0;};
  namespace Tools{typedef int tmp_add_type_6;}
  Tools::tmp_add_type_6 tmp_add_func_6(){return 0;};

  // add classes
  BoundsQuery* tmp_add_class_0;
  CountVisitor* tmp_add_class_1;
  DataStream* tmp_add_class_2;
  Error* tmp_add_class_3;
  IdVisitor* tmp_add_class_4;
  Index* tmp_add_class_5;
  LeafQuery* tmp_add_class_6;
  LeafQueryResult* tmp_add_class_7;
  ObjVisitor* tmp_add_class_8;
  _G_fpos64_t* tmp_add_class_9;
  _G_fpos_t* tmp_add_class_10;
  _IO_cookie_io_functions_t* tmp_add_class_11;
  statx_timestamp* tmp_add_class_12;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/W94_rY3hyc/dump1.h"