-#undef HAVE_BACKTRACE
-#if HAVE_EXECINFO_H && HAVE_POPEN && defined(ADDR2LINE)
-# define HAVE_BACKTRACE 1 /* Hello linux box */
-#endif
-
-#if defined(_WIN32) && defined(_M_IX86) && !defined(__GNUC__)
-# define HAVE_BACKTRACE 1 /* Hello x86 windows box */
-#endif
-
-
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_ex, xbt, "Exception mecanism");