#define __NEED_locale_t
#include <bits/alltypes.h>
-
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) || defined(_POSIX_SOURCE) \
+ || (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE+0 < 200809L) \
+ || (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE+0 < 700)
int bcmp (const void *, const void *, size_t);
void bcopy (const void *, void *, size_t);
void bzero (void *, size_t);
-
-int ffs (int);
-
char *index (const char *, int);
char *rindex (const char *, int);
+#endif
+
+int ffs (int);
int strcasecmp (const char *, const char *);
int strncasecmp (const char *, const char *, size_t);