New module 'wcpcpy'.

[gnulib.git] / m4 / wchar_h.m4

diff --git a/m4/wchar_h.m4 b/m4/wchar_h.m4
index 8cae82d..a304d50 100644 (file)
--- a/m4/wchar_h.m4
+++ b/m4/wchar_h.m4
@@ -1,13 +1,13 @@
 dnl A placeholder for ISO C99 <wchar.h>, for platforms that have issues.
 
-dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
 dnl Written by Eric Blake.
 
-# wchar_h.m4 serial 33
+# wchar_h.m4 serial 38
 
 AC_DEFUN([gl_WCHAR_H],
 [
@@ -17,7 +17,6 @@ AC_DEFUN([gl_WCHAR_H],
   dnl Check for <wchar.h> (missing in Linux uClibc when built without wide
   dnl character support).
   dnl <wchar.h> is always overridden, because of GNULIB_POSIXCHECK.
-  AC_CHECK_HEADERS_ONCE([wchar.h])
   gl_CHECK_NEXT_HEADERS([wchar.h])
   if test $ac_cv_header_wchar_h = yes; then
     HAVE_WCHAR_H=1
@@ -26,6 +25,8 @@ AC_DEFUN([gl_WCHAR_H],
   fi
   AC_SUBST([HAVE_WCHAR_H])
 
+  AC_REQUIRE([gl_FEATURES_H])
+
   AC_REQUIRE([gt_TYPE_WINT_T])
   if test $gt_cv_c_wint_t = yes; then
     HAVE_WINT_T=1
@@ -37,15 +38,21 @@ AC_DEFUN([gl_WCHAR_H],
   dnl Check for declarations of anything we want to poison if the
   dnl corresponding gnulib module is not in use.
   gl_WARN_ON_USE_PREPARE([[
-/* Some systems require additional headers.  */
-#ifndef __GLIBC__
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+   <wchar.h>.
+   BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
+   included before <wchar.h>.  */
+#if !(defined __GLIBC__ && !defined __UCLIBC__)
 # include <stddef.h>
 # include <stdio.h>
 # include <time.h>
 #endif
 #include <wchar.h>
-    ]], [btowc wctob mbsinit mbrtowc mbrlen mbsrtowcs mbsnrtowcs wcrtomb
-    wcsrtombs wcsnrtombs wcwidth])
+    ]],
+    [btowc wctob mbsinit mbrtowc mbrlen mbsrtowcs mbsnrtowcs wcrtomb
+     wcsrtombs wcsnrtombs wcwidth wmemchr wmemcmp wmemcpy wmemmove wmemset
+     wcslen wcsnlen wcscpy wcpcpy
+    ])
 ])
 
 dnl Check whether <wchar.h> is usable at all.
@@ -61,6 +68,13 @@ AC_DEFUN([gl_WCHAR_H_INLINE_OK],
     [gl_cv_header_wchar_h_correct_inline=yes
      AC_LANG_CONFTEST([
        AC_LANG_SOURCE([[#define wcstod renamed_wcstod
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+   <wchar.h>.
+   BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
+   included before <wchar.h>.  */
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
 #include <wchar.h>
 extern int zero (void);
 int main () { return zero(); }
@@ -69,6 +83,13 @@ int main () { return zero(); }
        mv conftest.$ac_objext conftest1.$ac_objext
        AC_LANG_CONFTEST([
          AC_LANG_SOURCE([[#define wcstod renamed_wcstod
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+   <wchar.h>.
+   BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
+   included before <wchar.h>.  */
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
 #include <wchar.h>
 int zero (void) { return 0; }
 ]])])
@@ -125,6 +146,15 @@ AC_DEFUN([gl_WCHAR_H_DEFAULTS],
   GNULIB_WCSRTOMBS=0;  AC_SUBST([GNULIB_WCSRTOMBS])
   GNULIB_WCSNRTOMBS=0; AC_SUBST([GNULIB_WCSNRTOMBS])
   GNULIB_WCWIDTH=0;    AC_SUBST([GNULIB_WCWIDTH])
+  GNULIB_WMEMCHR=0;    AC_SUBST([GNULIB_WMEMCHR])
+  GNULIB_WMEMCMP=0;    AC_SUBST([GNULIB_WMEMCMP])
+  GNULIB_WMEMCPY=0;    AC_SUBST([GNULIB_WMEMCPY])
+  GNULIB_WMEMMOVE=0;   AC_SUBST([GNULIB_WMEMMOVE])
+  GNULIB_WMEMSET=0;    AC_SUBST([GNULIB_WMEMSET])
+  GNULIB_WCSLEN=0;     AC_SUBST([GNULIB_WCSLEN])
+  GNULIB_WCSNLEN=0;    AC_SUBST([GNULIB_WCSNLEN])
+  GNULIB_WCSCPY=0;     AC_SUBST([GNULIB_WCSCPY])
+  GNULIB_WCPCPY=0;     AC_SUBST([GNULIB_WCPCPY])
   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE_BTOWC=1;         AC_SUBST([HAVE_BTOWC])
   HAVE_MBSINIT=1;       AC_SUBST([HAVE_MBSINIT])
@@ -135,6 +165,15 @@ AC_DEFUN([gl_WCHAR_H_DEFAULTS],
   HAVE_WCRTOMB=1;       AC_SUBST([HAVE_WCRTOMB])
   HAVE_WCSRTOMBS=1;     AC_SUBST([HAVE_WCSRTOMBS])
   HAVE_WCSNRTOMBS=1;    AC_SUBST([HAVE_WCSNRTOMBS])
+  HAVE_WMEMCHR=1;       AC_SUBST([HAVE_WMEMCHR])
+  HAVE_WMEMCMP=1;       AC_SUBST([HAVE_WMEMCMP])
+  HAVE_WMEMCPY=1;       AC_SUBST([HAVE_WMEMCPY])
+  HAVE_WMEMMOVE=1;      AC_SUBST([HAVE_WMEMMOVE])
+  HAVE_WMEMSET=1;       AC_SUBST([HAVE_WMEMSET])
+  HAVE_WCSLEN=1;        AC_SUBST([HAVE_WCSLEN])
+  HAVE_WCSNLEN=1;       AC_SUBST([HAVE_WCSNLEN])
+  HAVE_WCSCPY=1;        AC_SUBST([HAVE_WCSCPY])
+  HAVE_WCPCPY=1;        AC_SUBST([HAVE_WCPCPY])
   HAVE_DECL_WCTOB=1;    AC_SUBST([HAVE_DECL_WCTOB])
   HAVE_DECL_WCWIDTH=1;  AC_SUBST([HAVE_DECL_WCWIDTH])
   REPLACE_MBSTATE_T=0;  AC_SUBST([REPLACE_MBSTATE_T])