Temporary header file '/tmp/vzU0CAnpGR/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/r3/r3_define.h"
  #include "/usr/include/r3/r3_gvc.h"
  #include "/usr/include/r3/r3_str.h"
  #include "/usr/include/r3/r3.h"
  #include "/usr/include/r3/r3_list.h"
  #include "/usr/include/r3/str_array.h"
  #include "/usr/include/r3/r3.hpp"
  #include "/usr/include/r3/r3_json.h"

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/vzU0CAnpGR/dump1.h"  -I/usr/include/r3

In file included from /tmp/vzU0CAnpGR/dump1.h:13:
/usr/include/r3/r3_gvc.h:11:10: fatal error: gvc.h: No such file or directory
   11 | #include <gvc.h>
      |          ^~~~~~~
compilation terminated.