Temporary header file '/tmp/sm2mkWk58R/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/lo/lo.h"
  #include "/usr/include/lo/lo_cpp.h"
  #include "/usr/include/lo/lo_endian.h"
  #include "/usr/include/lo/lo_errors.h"
  #include "/usr/include/lo/lo_lowlevel.h"
  #include "/usr/include/lo/lo_macros.h"
  #include "/usr/include/lo/lo_osc_types.h"
  #include "/usr/include/lo/lo_serverthread.h"
  #include "/usr/include/lo/lo_throw.h"
  #include "/usr/include/lo/lo_types.h"

  // add namespaces
  namespace lo{typedef int tmp_add_type_1;}
  lo::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;
  addrinfo* tmp_add_class_3;
  cmsghdr* tmp_add_class_4;
  gaicb* tmp_add_class_5;
  group_filter* tmp_add_class_6;
  group_req* tmp_add_class_7;
  group_source_req* tmp_add_class_8;
  hostent* tmp_add_class_9;
  in6_addr* tmp_add_class_10;
  in6_pktinfo* tmp_add_class_11;
  in_addr* tmp_add_class_12;
  in_pktinfo* tmp_add_class_13;
  iovec* tmp_add_class_14;
  ip6_mtuinfo* tmp_add_class_15;
  ip_mreq* tmp_add_class_16;
  ip_mreq_source* tmp_add_class_17;
  ip_mreqn* tmp_add_class_18;
  ip_msfilter* tmp_add_class_19;
  ip_opts* tmp_add_class_20;
  ipv6_mreq* tmp_add_class_21;
  linger* tmp_add_class_22;
  mmsghdr* tmp_add_class_23;
  msghdr* tmp_add_class_24;
  netent* tmp_add_class_25;
  osockaddr* tmp_add_class_26;
  protoent* tmp_add_class_27;
  rpcent* tmp_add_class_28;
  servent* tmp_add_class_29;
  sockaddr* tmp_add_class_30;
  sockaddr_in* tmp_add_class_31;
  sockaddr_in6* tmp_add_class_32;
  sockaddr_storage* tmp_add_class_33;
  ucred* tmp_add_class_34;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/sm2mkWk58R/dump1.h"