Temporary header file '/tmp/uqRAK2CiNN/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/wnn/commonhd.h"
  #include "/usr/include/wnn/cplib.h"
  #include "/usr/include/wnn/jlib.h"
  #include "/usr/include/wnn/jllib.h"
  #include "/usr/include/wnn/jslib.h"
  #include "/usr/include/wnn/msg.h"
  #include "/usr/include/wnn/rk_spclval.h"
  #include "/usr/include/wnn/wnn_config.h"
  #include "/usr/include/wnn/wnnerror.h"
  #include "/usr/include/wnn/config.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;
  bunjoho* tmp_add_class_3;
  dicinfo* tmp_add_class_4;
  jikouho_entry* tmp_add_class_5;
  jikouhojoho* tmp_add_class_6;
  jishojoho* tmp_add_class_7;
  jwho* tmp_add_class_8;
  kouho_entry* tmp_add_class_9;
  msg_bd* tmp_add_class_10;
  msg_cat* tmp_add_class_11;
  wnn_buf* tmp_add_class_12;
  wnn_dai_bunsetsu* tmp_add_class_13;
  wnn_dic_info* tmp_add_class_14;
  wnn_env* tmp_add_class_15;
  wnn_env_info* tmp_add_class_16;
  wnn_file_head* tmp_add_class_17;
  wnn_file_info_struct* tmp_add_class_18;
  wnn_file_stat* tmp_add_class_19;
  wnn_jdata* tmp_add_class_20;
  wnn_jl_bun* tmp_add_class_21;
  wnn_jserver_id* tmp_add_class_22;
  wnn_jwho* tmp_add_class_23;
  wnn_param* tmp_add_class_24;
  wnn_ret_buf* tmp_add_class_25;
  wnn_sho_bunsetsu* tmp_add_class_26;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/uqRAK2CiNN/dump1.h"

In file included from /usr/include/wnn/jllib.h:40,
                 from /tmp/uqRAK2CiNN/dump1.h:15:
/usr/include/wnn/jslib.h:214:12: error: conflicting declaration of ‘int wnn_errorno’ with ‘C’ linkage
  214 | extern int wnn_errorno;         /* Wnn¤Î¥¨¥é¡¼¤Ï¤³¤ÎÊÑ¿ô¤ËÊó¹ð¤µ¤ì¤ë */
      |            ^~~~~~~~~~~
In file included from /tmp/uqRAK2CiNN/dump1.h:14:
/usr/include/wnn/jlib.h:55:12: note: previous declaration with ‘C++’ linkage
   55 | extern int wnn_errorno;         /* Wnn¤Î¥¨¥é¡¼¤Ï¤³¤ÎÊÑ¿ô¤ËÊó¹ð¤µ¤ì¤ë */
      |            ^~~~~~~~~~~