[PATCH] Fix -Wundef warnings in regex_internal.h

[Siddhesh Poyarekar]

Hi,

This patch defines macros that gnulib looks for and also syncs up the
macro check with gnulib.  No change in generated code on i686.

Siddhesh

	* include/libc-symbols.h (HAVE_LIBINTL_H): Define macro.
	(HAVE_WCTYPE_H): Likewise.
	(HAVE_ISWCTYPE): Likewise.
	(ENABLE_NLS): Likewise.
	* posix/regex_internal.h [(defined MB_CUR_MAX && HAVE_WCTYPE_H
	&& HAVE_ISWCTYPE) || _LIBC]: Sync up with gnulib.

diff --git a/include/libc-symbols.h b/include/libc-symbols.h
index d833eb7..48edadc 100644
--- a/include/libc-symbols.h
+++ b/include/libc-symbols.h
@@ -62,6 +62,10 @@
 #define STDC_HEADERS	1
 #define HAVE_MBSTATE_T	1
 #define HAVE_MBSRTOWCS	1
+#define HAVE_LIBINTL_H	1
+#define HAVE_WCTYPE_H	1
+#define HAVE_ISWCTYPE	1
+#define ENABLE_NLS	1
 
 /* The symbols in all the user (non-_) macros are C symbols.  */
 
diff --git a/posix/regex_internal.h b/posix/regex_internal.h
index 75c390f..4bbf6a8 100644
--- a/posix/regex_internal.h
+++ b/posix/regex_internal.h
@@ -90,7 +90,7 @@
 # define SIZE_MAX ((size_t) -1)
 #endif
 
-#if (defined MB_CUR_MAX && HAVE_LOCALE_H && HAVE_WCTYPE_H && HAVE_WCHAR_H && HAVE_WCRTOMB && HAVE_MBRTOWC && HAVE_WCSCOLL) || _LIBC
+#if (defined MB_CUR_MAX && HAVE_WCTYPE_H && HAVE_ISWCTYPE) || _LIBC
 # define RE_ENABLE_I18N
 #endif
 
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