+/* Find the first occurrence of WC in WCS. */
+#if @GNULIB_WCSCHR@
+# if !@HAVE_WCSCHR@
+_GL_FUNCDECL_SYS (wcschr, wchar_t *, (const wchar_t *wcs, wchar_t wc));
+# endif
+_GL_CXXALIAS_SYS (wcschr, wchar_t *, (const wchar_t *wcs, wchar_t wc));
+_GL_CXXALIASWARN (wcschr);
+#elif defined GNULIB_POSIXCHECK
+# undef wcschr
+# if HAVE_RAW_DECL_WCSCHR
+_GL_WARN_ON_USE (wcschr, "wcschr is unportable - "
+ "use gnulib module wcschr for portability");
+# endif
+#endif
+
+
+/* Find the last occurrence of WC in WCS. */
+#if @GNULIB_WCSRCHR@
+# if !@HAVE_WCSRCHR@
+_GL_FUNCDECL_SYS (wcsrchr, wchar_t *, (const wchar_t *wcs, wchar_t wc));
+# endif
+_GL_CXXALIAS_SYS (wcsrchr, wchar_t *, (const wchar_t *wcs, wchar_t wc));
+_GL_CXXALIASWARN (wcsrchr);
+#elif defined GNULIB_POSIXCHECK
+# undef wcsrchr
+# if HAVE_RAW_DECL_WCSRCHR
+_GL_WARN_ON_USE (wcsrchr, "wcsrchr is unportable - "
+ "use gnulib module wcsrchr for portability");
+# endif
+#endif
+
+
+/* Return the length of the initial segmet of WCS which consists entirely
+ of wide characters not in REJECT. */
+#if @GNULIB_WCSCSPN@
+# if !@HAVE_WCSCSPN@
+_GL_FUNCDECL_SYS (wcscspn, size_t, (const wchar_t *wcs, const wchar_t *reject));
+# endif
+_GL_CXXALIAS_SYS (wcscspn, size_t, (const wchar_t *wcs, const wchar_t *reject));
+_GL_CXXALIASWARN (wcscspn);
+#elif defined GNULIB_POSIXCHECK
+# undef wcscspn
+# if HAVE_RAW_DECL_WCSCSPN
+_GL_WARN_ON_USE (wcscspn, "wcscspn is unportable - "
+ "use gnulib module wcscspn for portability");
+# endif
+#endif
+
+
+/* Return the length of the initial segmet of WCS which consists entirely
+ of wide characters in ACCEPT. */
+#if @GNULIB_WCSSPN@
+# if !@HAVE_WCSSPN@
+_GL_FUNCDECL_SYS (wcsspn, size_t, (const wchar_t *wcs, const wchar_t *accept));
+# endif
+_GL_CXXALIAS_SYS (wcsspn, size_t, (const wchar_t *wcs, const wchar_t *accept));
+_GL_CXXALIASWARN (wcsspn);
+#elif defined GNULIB_POSIXCHECK
+# undef wcsspn
+# if HAVE_RAW_DECL_WCSSPN
+_GL_WARN_ON_USE (wcsspn, "wcsspn is unportable - "
+ "use gnulib module wcsspn for portability");
+# endif
+#endif
+
+
+/* Find the first occurrence in WCS of any character in ACCEPT. */
+#if @GNULIB_WCSPBRK@
+# if !@HAVE_WCSPBRK@
+_GL_FUNCDECL_SYS (wcspbrk, wchar_t *,
+ (const wchar_t *wcs, const wchar_t *accept));
+# endif
+_GL_CXXALIAS_SYS (wcspbrk, wchar_t *,
+ (const wchar_t *wcs, const wchar_t *accept));
+_GL_CXXALIASWARN (wcspbrk);
+#elif defined GNULIB_POSIXCHECK
+# undef wcspbrk
+# if HAVE_RAW_DECL_WCSPBRK
+_GL_WARN_ON_USE (wcspbrk, "wcspbrk is unportable - "
+ "use gnulib module wcspbrk for portability");
+# endif
+#endif
+
+
+/* Find the first occurrence of NEEDLE in HAYSTACK. */
+#if @GNULIB_WCSSTR@
+# if !@HAVE_WCSSTR@
+_GL_FUNCDECL_SYS (wcsstr, wchar_t *,
+ (const wchar_t *haystack, const wchar_t *needle));
+# endif
+_GL_CXXALIAS_SYS (wcsstr, wchar_t *,
+ (const wchar_t *haystack, const wchar_t *needle));
+_GL_CXXALIASWARN (wcsstr);
+#elif defined GNULIB_POSIXCHECK
+# undef wcsstr
+# if HAVE_RAW_DECL_WCSSTR
+_GL_WARN_ON_USE (wcsstr, "wcsstr is unportable - "
+ "use gnulib module wcsstr for portability");
+# endif
+#endif
+
+