The Tor Browser / file revision

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 #include <dlfcn.h>

 #ifndef HAVE_DLADDR

 typedef struct {

   const char *dli_fname;

   void *dli_fbase;

   const char *dli_sname;

   void *dli_saddr;

 } Dl_info;

 extern int dladdr(void *addr, Dl_info *info) __attribute__((weak));

 #define HAVE_DLADDR 1

 #endif