Temporary header file '/tmp/x1suSGi1ZO/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/meep/adjust_verbosity.hpp"
  #include "/usr/include/meep/material_data.hpp"
  #include "/usr/include/meep/meep-config.h"
  #include "/usr/include/meep/meepgeom.hpp"
  #include "/usr/include/meep/mympi.hpp"
  #include "/usr/include/meep/vec.hpp"
  #include "/usr/include/meep.hpp"

  // add namespaces
  namespace meep{typedef int tmp_add_type_1;}
  meep::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/x1suSGi1ZO/dump1.h"

In file included from /tmp/x1suSGi1ZO/dump1.h:13:
/usr/include/meep/material_data.hpp:27:10: fatal error: ctlgeom.h: No such file or directory
   27 | #include <ctlgeom.h>
      |          ^~~~~~~~~~~
compilation terminated.