Temporary header file '/tmp/_LkK2L4yUY/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
#ifdef __cplusplus
// C17 compat layer
#define _Alignof(type) alignof(type)
#endif
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/libMUSCLE/muscle.h"
  #include "/usr/include/libMUSCLE/alpha.h"
  #include "/usr/include/libMUSCLE/clust.h"
  #include "/usr/include/libMUSCLE/cluster.h"
  #include "/usr/include/libMUSCLE/clustset.h"
  #include "/usr/include/libMUSCLE/clustsetdf.h"
  #include "/usr/include/libMUSCLE/clustsetmsa.h"
  #include "/usr/include/libMUSCLE/diaglist.h"
  #include "/usr/include/libMUSCLE/distcalc.h"
  #include "/usr/include/libMUSCLE/distfunc.h"
  #include "/usr/include/libMUSCLE/dpreglist.h"
  #include "/usr/include/libMUSCLE/edgelist.h"
  #include "/usr/include/libMUSCLE/enumopts.h"
  #include "/usr/include/libMUSCLE/estring.h"
  #include "/usr/include/libMUSCLE/gonnet.h"
  #include "/usr/include/libMUSCLE/intmath.h"
  #include "/usr/include/libMUSCLE/msa.h"
  #include "/usr/include/libMUSCLE/msadist.h"
  #include "/usr/include/libMUSCLE/objscore.h"
  #include "/usr/include/libMUSCLE/params.h"
  #include "/usr/include/libMUSCLE/profile.h"
  #include "/usr/include/libMUSCLE/pwpath.h"
  #include "/usr/include/libMUSCLE/refine.h"
  #include "/usr/include/libMUSCLE/scorehistory.h"
  #include "/usr/include/libMUSCLE/seq.h"
  #include "/usr/include/libMUSCLE/seqvect.h"
  #include "/usr/include/libMUSCLE/textfile.h"
  #include "/usr/include/libMUSCLE/threadstorage.h"
  #include "/usr/include/libMUSCLE/timing.h"
  #include "/usr/include/libMUSCLE/tree.h"
  #include "/usr/include/libMUSCLE/types.h"
  #include "/usr/include/libMUSCLE/unixio.h"

  // add namespaces
  namespace muscle{typedef int tmp_add_type_1;}
  muscle::tmp_add_type_1 tmp_add_func_1(){return 0;};

  // 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;
  f_owner_ex* tmp_add_class_3;
  file_handle* tmp_add_class_4;
  flock64* tmp_add_class_5;
  iovec* tmp_add_class_6;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/_LkK2L4yUY/dump1.h"