Temporary header file '/tmp/srwjfSOQUj/dump1.h' with the following content will be compiled to create GCC translation unit dump:

  // add defines
  #define __STDC_VERSION__ 201710L
#define _TIME_BITS 64
#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/geodesic.h"
  #include "/usr/include/proj/common.hpp"
  #include "/usr/include/proj/coordinateoperation.hpp"
  #include "/usr/include/proj/coordinatesystem.hpp"
  #include "/usr/include/proj/crs.hpp"
  #include "/usr/include/proj/datum.hpp"
  #include "/usr/include/proj/io.hpp"
  #include "/usr/include/proj/metadata.hpp"
  #include "/usr/include/proj/nn.hpp"
  #include "/usr/include/proj/util.hpp"
  #include "/usr/include/proj.h"
  #include "/usr/include/proj_constants.h"
  #include "/usr/include/proj_experimental.h"
  #include "/usr/include/proj_symbol_rename.h"

  // add namespaces
  namespace dropbox{typedef int tmp_add_type_1;}
  dropbox::tmp_add_type_1 tmp_add_func_1(){return 0;};
  namespace dropbox{namespace oxygen{typedef int tmp_add_type_2;}}
  dropbox::oxygen::tmp_add_type_2 tmp_add_func_2(){return 0;};
  namespace osgeo{typedef int tmp_add_type_3;}
  osgeo::tmp_add_type_3 tmp_add_func_3(){return 0;};
  namespace osgeo{namespace proj{typedef int tmp_add_type_4;}}
  osgeo::proj::tmp_add_type_4 tmp_add_func_4(){return 0;};
  namespace osgeo{namespace proj{namespace common{typedef int tmp_add_type_5;}}}
  osgeo::proj::common::tmp_add_type_5 tmp_add_func_5(){return 0;};
  namespace osgeo{namespace proj{namespace crs{typedef int tmp_add_type_6;}}}
  osgeo::proj::crs::tmp_add_type_6 tmp_add_func_6(){return 0;};
  namespace osgeo{namespace proj{namespace cs{typedef int tmp_add_type_7;}}}
  osgeo::proj::cs::tmp_add_type_7 tmp_add_func_7(){return 0;};
  namespace osgeo{namespace proj{namespace datum{typedef int tmp_add_type_8;}}}
  osgeo::proj::datum::tmp_add_type_8 tmp_add_func_8(){return 0;};
  namespace osgeo{namespace proj{namespace io{typedef int tmp_add_type_9;}}}
  osgeo::proj::io::tmp_add_type_9 tmp_add_func_9(){return 0;};
  namespace osgeo{namespace proj{namespace metadata{typedef int tmp_add_type_10;}}}
  osgeo::proj::metadata::tmp_add_type_10 tmp_add_func_10(){return 0;};
  namespace osgeo{namespace proj{namespace operation{typedef int tmp_add_type_11;}}}
  osgeo::proj::operation::tmp_add_type_11 tmp_add_func_11(){return 0;};
  namespace osgeo{namespace proj{namespace util{typedef int tmp_add_type_12;}}}
  osgeo::proj::util::tmp_add_type_12 tmp_add_func_12(){return 0;};
  namespace dropbox{namespace oxygen{namespace nn_detail{typedef int tmp_add_type_13;}}}
  dropbox::oxygen::nn_detail::tmp_add_type_13 tmp_add_func_13(){return 0;};

  // add classes
  P5_FACTORS* tmp_add_class_0;
  PJ_COORD* tmp_add_class_1;
  PJ_ELLPS* tmp_add_class_2;
  PJ_GRID_INFO* tmp_add_class_3;
  PJ_INFO* tmp_add_class_4;
  PJ_INIT_INFO* tmp_add_class_5;
  PJ_LIST* tmp_add_class_6;
  PJ_PRIME_MERIDIANS* tmp_add_class_7;
  PJ_PROJ_INFO* tmp_add_class_8;
  PJ_UNITS* tmp_add_class_9;
  PROJ_FILE_API* tmp_add_class_10;
  _G_fpos64_t* tmp_add_class_11;
  _G_fpos_t* tmp_add_class_12;
  _IO_cookie_io_functions_t* tmp_add_class_13;
  geod_geodesic* tmp_add_class_14;
  geod_geodesicline* tmp_add_class_15;
  geod_polygon* tmp_add_class_16;

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