Temporary header file '/tmp/zWUl7ZAcBN/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/ndpi/ndpi_api.h"
  #include "/usr/include/ndpi/ndpi_classify.h"
  #include "/usr/include/ndpi/ndpi_config.h"
  #include "/usr/include/ndpi/ndpi_define.h"
  #include "/usr/include/ndpi/ndpi_encryption.h"
  #include "/usr/include/ndpi/ndpi_includes.h"
  #include "/usr/include/ndpi/ndpi_includes_OpenBSD.h"
  #include "/usr/include/ndpi/ndpi_main.h"
  #include "/usr/include/ndpi/ndpi_patricia_typedefs.h"
  #include "/usr/include/ndpi/ndpi_protocol_ids.h"
  #include "/usr/include/ndpi/ndpi_protocols.h"
  #include "/usr/include/ndpi/ndpi_typedefs.h"
  #include "/usr/include/ndpi/ndpi_unix.h"
  #include "/usr/include/ndpi/ndpi_utils.h"
  #include "/usr/include/ndpi/ndpi_win32.h"

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/zWUl7ZAcBN/dump1.h"

In file included from /tmp/zWUl7ZAcBN/dump1.h:18:
/usr/include/ndpi/ndpi_includes_OpenBSD.h:31:10: fatal error: net/bpf.h: No such file or directory
   31 | #include <net/bpf.h>
      |          ^~~~~~~~~~~
compilation terminated.