Temporary header file '/tmp/3Ax1z2ru8y/dump1.h' with the following content will be compiled to create GCC translation unit dump:

  // add defines
  #define __STDC_VERSION__ 201710L
#define _FILE_OFFSET_BITS 64
#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/snp-sites/alignment-file.h"
  #include "/usr/include/snp-sites/fasta-of-snp-sites.h"
  #include "/usr/include/snp-sites/kseq.h"
  #include "/usr/include/snp-sites/phylib-of-snp-sites.h"
  #include "/usr/include/snp-sites/snp-sites.h"
  #include "/usr/include/snp-sites/vcf.h"

  // add classes
  _G_fpos64_t* tmp_add_class_0;
  _G_fpos_t* tmp_add_class_1;
  _IO_cookie_io_functions_t* tmp_add_class_2;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/3Ax1z2ru8y/dump1.h"