Temporary header file '/tmp/OByTFgHg5C/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/xraylib/xraylib++.h"
  #include "/usr/include/xraylib/xraylib-auger.h"
  #include "/usr/include/xraylib/xraylib-aux.h"
  #include "/usr/include/xraylib/xraylib-crystal-diffraction.h"
  #include "/usr/include/xraylib/xraylib-defs.h"
  #include "/usr/include/xraylib/xraylib-deprecated.h"
  #include "/usr/include/xraylib/xraylib-error.h"
  #include "/usr/include/xraylib/xraylib-lines.h"
  #include "/usr/include/xraylib/xraylib-nist-compounds.h"
  #include "/usr/include/xraylib/xraylib-parser.h"
  #include "/usr/include/xraylib/xraylib-radionuclides.h"
  #include "/usr/include/xraylib/xraylib-shells.h"
  #include "/usr/include/xraylib/xraylib.h"

  // add namespaces
  namespace xrlpp{typedef int tmp_add_type_1;}
  xrlpp::tmp_add_type_1 tmp_add_func_1(){return 0;};
  namespace xrlpp{namespace Crystal{typedef int tmp_add_type_2;}}
  xrlpp::Crystal::tmp_add_type_2 tmp_add_func_2(){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;
  _xrl_error* tmp_add_class_3;
  compoundData* tmp_add_class_4;
  compoundDataNIST* tmp_add_class_5;
  radioNuclideData* tmp_add_class_6;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/OByTFgHg5C/dump1.h"  -I/usr/include/xraylib