Imported Upstream version 4.2.2

1 files changed, 69 insertions, 49 deletions

diff --git a/m4/wcrtomb.m4 b/m4/wcrtomb.m4
index cb7d926..00d7302 100644
--- a/m4/wcrtomb.m4
+++ b/m4/wcrtomb.m4
@@ -1,5 +1,5 @@
-# wcrtomb.m4 serial 4
-dnl Copyright (C) 2008-2009 Free Software Foundation, Inc.
+# wcrtomb.m4 serial 11
+dnl Copyright (C) 2008-2012 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.
@@ -10,79 +10,99 @@ AC_DEFUN([gl_FUNC_WCRTOMB],
 
   AC_REQUIRE([AC_TYPE_MBSTATE_T])
   gl_MBSTATE_T_BROKEN
-  if test $REPLACE_MBSTATE_T = 1; then
-    REPLACE_WCRTOMB=1
-  fi
+
   AC_CHECK_FUNCS_ONCE([wcrtomb])
   if test $ac_cv_func_wcrtomb = no; then
     HAVE_WCRTOMB=0
-  fi
-  if test $HAVE_WCRTOMB != 0 && test $REPLACE_WCRTOMB != 1; then
-    dnl On AIX 4.3, OSF/1 5.1 and Solaris 10, wcrtomb (NULL, 0, NULL) sometimes
-    dnl returns 0 instead of 1.
-    AC_REQUIRE([AC_PROG_CC])
-    AC_REQUIRE([gt_LOCALE_FR])
-    AC_REQUIRE([gt_LOCALE_FR_UTF8])
-    AC_REQUIRE([gt_LOCALE_JA])
-    AC_REQUIRE([gt_LOCALE_ZH_CN])
-    AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
-    AC_CACHE_CHECK([whether wcrtomb return value is correct],
-      [gl_cv_func_wcrtomb_retval],
-      [
-        dnl Initial guess, used when cross-compiling or when no suitable locale
-        dnl is present.
+    AC_CHECK_DECLS([wcrtomb],,, [[
+/* 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>
+]])
+    if test $ac_cv_have_decl_wcrtomb = yes; then
+      dnl On Minix 3.1.8, the system's <wchar.h> declares wcrtomb() although
+      dnl it does not have the function. Avoid a collision with gnulib's
+      dnl replacement.
+      REPLACE_WCRTOMB=1
+    fi
+  else
+    if test $REPLACE_MBSTATE_T = 1; then
+      REPLACE_WCRTOMB=1
+    else
+      dnl On AIX 4.3, OSF/1 5.1 and Solaris 10, wcrtomb (NULL, 0, NULL) sometimes
+      dnl returns 0 instead of 1.
+      AC_REQUIRE([AC_PROG_CC])
+      AC_REQUIRE([gt_LOCALE_FR])
+      AC_REQUIRE([gt_LOCALE_FR_UTF8])
+      AC_REQUIRE([gt_LOCALE_JA])
+      AC_REQUIRE([gt_LOCALE_ZH_CN])
+      AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+      AC_CACHE_CHECK([whether wcrtomb return value is correct],
+        [gl_cv_func_wcrtomb_retval],
+        [
+          dnl Initial guess, used when cross-compiling or when no suitable locale
+          dnl is present.
 changequote(,)dnl
-        case "$host_os" in
-                                   # Guess no on AIX 4, OSF/1 and Solaris.
-          aix4* | osf* | solaris*) gl_cv_func_wcrtomb_retval="guessing no" ;;
-                                   # Guess yes otherwise.
-          *)                       gl_cv_func_wcrtomb_retval="guessing yes" ;;
-        esac
+          case "$host_os" in
+                                     # Guess no on AIX 4, OSF/1 and Solaris.
+            aix4* | osf* | solaris*) gl_cv_func_wcrtomb_retval="guessing no" ;;
+                                     # Guess yes otherwise.
+            *)                       gl_cv_func_wcrtomb_retval="guessing yes" ;;
+          esac
 changequote([,])dnl
-        if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then
-          AC_TRY_RUN([
+          if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then
+            AC_RUN_IFELSE(
+              [AC_LANG_SOURCE([[
 #include <locale.h>
-#include <stdio.h>
 #include <string.h>
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+   <wchar.h>.
+   BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
+   included before <wchar.h>.  */
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
 #include <wchar.h>
 int main ()
 {
+  int result = 0;
   if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
     {
       if (wcrtomb (NULL, 0, NULL) != 1)
-        return 1;
+        result |= 1;
     }
   if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
     {
       if (wcrtomb (NULL, 0, NULL) != 1)
-        return 1;
+        result |= 2;
     }
   if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
     {
       if (wcrtomb (NULL, 0, NULL) != 1)
-        return 1;
+        result |= 4;
     }
   if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
     {
       if (wcrtomb (NULL, 0, NULL) != 1)
-        return 1;
+        result |= 8;
     }
-  return 0;
-}],
-            [gl_cv_func_wcrtomb_retval=yes],
-            [gl_cv_func_wcrtomb_retval=no],
-            [:])
-        fi
-      ])
-    case "$gl_cv_func_wcrtomb_retval" in
-      *yes) ;;
-      *) REPLACE_WCRTOMB=1 ;;
-    esac
-  fi
-  if test $HAVE_WCRTOMB = 0 || test $REPLACE_WCRTOMB = 1; then
-    gl_REPLACE_WCHAR_H
-    AC_LIBOBJ([wcrtomb])
-    gl_PREREQ_WCRTOMB
+  return result;
+}]])],
+              [gl_cv_func_wcrtomb_retval=yes],
+              [gl_cv_func_wcrtomb_retval=no],
+              [:])
+          fi
+        ])
+      case "$gl_cv_func_wcrtomb_retval" in
+        *yes) ;;
+        *) REPLACE_WCRTOMB=1 ;;
+      esac
+    fi
   fi
 ])