--- portable/system.h.orig
+++ portable/system.h
@@ -136,12 +136,6 @@ extern void *reallocarray(void *, size_t, size_t);
 #if !HAVE_SETENV
 extern int setenv(const char *, const char *, int);
 #endif
-#if !HAVE_DECL_STRLCAT
-extern size_t strlcat(char *, const char *, size_t);
-#endif
-#if !HAVE_DECL_STRLCPY
-extern size_t strlcpy(char *, const char *, size_t);
-#endif
 
 /* Undo default visibility change. */
 #pragma GCC visibility pop