Temporary header file '/tmp/MImG4njgMJ/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/urdf_exception/exception.h"
  #include "/usr/include/urdf_model/color.h"
  #include "/usr/include/urdf_model/joint.h"
  #include "/usr/include/urdf_model/link.h"
  #include "/usr/include/urdf_model/model.h"
  #include "/usr/include/urdf_model/pose.h"
  #include "/usr/include/urdf_model/twist.h"
  #include "/usr/include/urdf_model/types.h"
  #include "/usr/include/urdf_model/utils.h"
  #include "/usr/include/urdf_model_state/model_state.h"
  #include "/usr/include/urdf_model_state/twist.h"
  #include "/usr/include/urdf_model_state/types.h"
  #include "/usr/include/urdf_sensor/sensor.h"
  #include "/usr/include/urdf_sensor/types.h"
  #include "/usr/include/urdf_world/types.h"
  #include "/usr/include/urdf_world/world.h"

  // add namespaces
  namespace urdf{typedef int tmp_add_type_1;}
  urdf::tmp_add_type_1 tmp_add_func_1(){return 0;};

  // 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;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/MImG4njgMJ/dump1.h"