Temporary header file '/tmp/YA_KqWCMzZ/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
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/Random123/MicroURNG.hpp"
  #include "/usr/include/Random123/ReinterpretCtr.hpp"
  #include "/usr/include/Random123/aes.h"
  #include "/usr/include/Random123/array.h"
  #include "/usr/include/Random123/ars.h"
  #include "/usr/include/Random123/boxmuller.hpp"
  #include "/usr/include/Random123/conventional/Engine.hpp"
  #include "/usr/include/Random123/conventional/gsl_cbrng.h"
  #include "/usr/include/Random123/features/clangfeatures.h"
  #include "/usr/include/Random123/features/compilerfeatures.h"
  #include "/usr/include/Random123/features/gccfeatures.h"
  #include "/usr/include/Random123/features/iccfeatures.h"
  #include "/usr/include/Random123/features/metalfeatures.h"
  #include "/usr/include/Random123/features/msvcfeatures.h"
  #include "/usr/include/Random123/features/nvccfeatures.h"
  #include "/usr/include/Random123/features/open64features.h"
  #include "/usr/include/Random123/features/openclfeatures.h"
  #include "/usr/include/Random123/features/sse.h"
  #include "/usr/include/Random123/features/sunprofeatures.h"
  #include "/usr/include/Random123/gsl_microrng.h"
  #include "/usr/include/Random123/philox.h"
  #include "/usr/include/Random123/threefry.h"
  #include "/usr/include/Random123/u01fixedpt.h"
  #include "/usr/include/Random123/uniform.hpp"

  // add namespaces
  namespace r123{typedef int tmp_add_type_1;}
  r123::tmp_add_type_1 tmp_add_func_1(){return 0;};

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

In file included from /tmp/YA_KqWCMzZ/dump1.h:19:
/usr/include/Random123/conventional/gsl_cbrng.h:35:10: fatal error: gsl/gsl_rng.h: No such file or directory
   35 | #include <gsl/gsl_rng.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.