Temporary header file '/tmp/Q8mnuToKmH/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/inhomog/alloc_big_array.h"
  #include "/usr/include/inhomog/biscale_partition.h"
  #include "/usr/include/inhomog/config.h"
  #include "/usr/include/inhomog/inhomog.h"
  #include "/usr/include/inhomog/parse_noempty_strtox.h"
  #include "/usr/include/inhomog/power_spectrum_flatspace.h"

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/Q8mnuToKmH/dump1.h"

In file included from /tmp/Q8mnuToKmH/dump1.h:15:
/usr/include/inhomog/inhomog.h:24:10: fatal error: gsl/gsl_spline.h: No such file or directory
   24 | #include <gsl/gsl_spline.h>
      |          ^~~~~~~~~~~~~~~~~~
compilation terminated.

