1818#ifdef HAVE_UNISTD_H
1919# include <unistd.h> // lseek()
2020#endif
21- #if defined(HAVE_EXECINFO_H )&& defined(HAVE_DLFCN_H )&& defined(HAVE_LINK_H )
21+
22+ #if (defined(HAVE_EXECINFO_H )&& defined(HAVE_DLFCN_H )&& defined(HAVE_LINK_H ))
23+ # define _PY_HAS_BACKTRACE_HEADERS 1
24+ #endif
25+
26+ #if (defined(__APPLE__ )&& defined(HAVE_EXECINFO_H )&& defined(HAVE_DLFCN_H ))
27+ # define _PY_HAS_BACKTRACE_HEADERS 1
28+ #endif
29+
30+ #ifdef _PY_HAS_BACKTRACE_HEADERS
2231# include <execinfo.h> // backtrace(), backtrace_symbols()
2332# include <dlfcn.h> // dladdr1()
24- # include <link.h> // struct DL_info
25- # if defined(HAVE_BACKTRACE )&& defined(HAVE_BACKTRACE_SYMBOLS )&& defined(HAVE_DLADDR1 )
33+ #ifdef HAVE_LINK_H
34+ # include <link.h> // struct DL_info
35+ #endif
36+ # if defined(__APPLE__ )&& defined(HAVE_BACKTRACE )&& defined(HAVE_BACKTRACE_SYMBOLS )&& defined(HAVE_DLADDR )
37+ # define CAN_C_BACKTRACE
38+ # elif defined(HAVE_BACKTRACE )&& defined(HAVE_BACKTRACE_SYMBOLS )&& defined(HAVE_DLADDR1 )
2639# define CAN_C_BACKTRACE
2740# endif
2841#endif
@@ -1193,6 +1206,9 @@ _Py_backtrace_symbols_fd(int fd, void *const *array, Py_ssize_t size)
11931206VLA (int ,status ,size );
11941207/* Fill in the information we can get from dladdr() */
11951208for (Py_ssize_t i = 0 ;i < size ;++ i ) {
1209+ #ifdef __APPLE__
1210+ status [i ]= dladdr (array [i ],& info [i ]);
1211+ #else
11961212struct link_map * map ;
11971213status [i ]= dladdr1 (array [i ],& info [i ], (void * * )& map ,RTLD_DL_LINKMAP );
11981214if (status [i ]!= 0
@@ -1204,6 +1220,7 @@ _Py_backtrace_symbols_fd(int fd, void *const *array, Py_ssize_t size)
12041220 something we want to subtract out */
12051221info [i ].dli_fbase = (void * )map -> l_addr ;
12061222 }
1223+ #endif
12071224 }
12081225for (Py_ssize_t i = 0 ;i < size ;++ i ) {
12091226if (status [i ]== 0