-extern Uint strlen(char *Str);
-extern char *strcpy(char *__dest, char *__src);
-extern int strcmp(char *__dest, char *__src);
-extern int strncmp(char *Str1, char *Str2, size_t num);
-extern int strucmp(char *Str1, char *Str2);
-extern int strpos(char *Str, char Ch);
-extern int strpos8(char *str, Uint32 search);
+extern Uint strlen(const char *Str);
+extern char *strcpy(char *__dest, const char *__src);
+extern int strcmp(const char *__str1, const char *__str2);
+extern int strncmp(const char *Str1, const char *Str2, size_t num);
+extern int strucmp(const char *Str1, const char *Str2);
+extern char *strdup(const char *__str);
+extern int strpos(const char *Str, char Ch);
+extern int strpos8(const char *str, Uint32 search);