Temporary header file '/tmp/6OMz5w0j8g/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/lib/gcc/arm-linux-gnueabihf/12/include/stddef.h"
  #include "/usr/include/slop.hpp"

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

  // add classes
  slop_options* tmp_add_class_0;
  slop_selection* tmp_add_class_1;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/6OMz5w0j8g/dump1.h"