GetExecutablePath

/**
 * Get the location of the executable
 * @return the location of the executable, as a string.
 */
const char *GetExecutableLocation()
{
   const char *path;
   char buf[1024];

   #if defined (WIN32) || defined (WIN64)
      GetModuleFileName(path, &size);
   #elif defined (__APPLE__)
      _NSGetExecutablePath(path, &size);
   #elif defined(UNIX)
      if (readlink("/proc/self/exe", buf, sizeof(buf)) == -1) path = buf;
   #elif defined(__FreeBSD__)
      int mib[4];
      mib[0] = CTL_KERN;
      mib[1] = KERN_PROC;
      mib[2] = KERN_PROC_PATHNAME;
      mib[3] = -1;
      sysctl(mib, 4, buf, sizeof(buf), NULL, 0);
      path = buf;
   #elif defined(SUNOS)
      path = getexecname();
   #endif
   return path;
}