Temporary header file '/tmp/aNpYfARsLN/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/elk/compat.h"
  #include "/usr/include/elk/cstring.h"
  #include "/usr/include/elk/exception.h"
  #include "/usr/include/elk/extensions/unix.h"
  #include "/usr/include/elk/extensions/xlib.h"
  #include "/usr/include/elk/extensions/xt.h"
  #include "/usr/include/elk/extern.h"
  #include "/usr/include/elk/funcproto.h"
  #include "/usr/include/elk/gc.h"
  #include "/usr/include/elk/intern.h"
  #include "/usr/include/elk/kernel.h"
  #include "/usr/include/elk/misc.h"
  #include "/usr/include/elk/object.h"
  #include "/usr/include/elk/param.h"
  #include "/usr/include/elk/scheme.h"
  #include "/usr/include/elk/site.h"
  #include "/usr/include/elk/stkmem.h"
  #include "/usr/include/elk/type.h"

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

In file included from /tmp/aNpYfARsLN/dump1.h:15:
/usr/include/elk/extensions/unix.h:31:10: fatal error: config.h: No such file or directory
   31 | #include "config.h"
      |          ^~~~~~~~~~
compilation terminated.