X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fmbrlen.m4;h=8bf0756949fc417ef50070f82c2020e2f77a3cbe;hb=a901e1f94eb5223ea4461dac1c7b4778ea58d8bf;hp=5623ed5b9d346b891a3026c9c4df24e982849027;hpb=bed49847d22dba5330708c752a6d0fa79d2b7cad;p=gnulib.git

diff --git a/m4/mbrlen.m4 b/m4/mbrlen.m4
index 5623ed5b9..8bf075694 100644
--- a/m4/mbrlen.m4
+++ b/m4/mbrlen.m4
@@ -1,5 +1,5 @@
-# mbrlen.m4 serial 2
-dnl Copyright (C) 2008 Free Software Foundation, Inc.
+# mbrlen.m4 serial 8
+dnl Copyright (C) 2008, 2010-2012 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.
@@ -13,6 +13,22 @@ AC_DEFUN([gl_FUNC_MBRLEN],
   AC_CHECK_FUNCS_ONCE([mbrlen])
   if test $ac_cv_func_mbrlen = no; then
     HAVE_MBRLEN=0
+    AC_CHECK_DECLS([mbrlen],,, [[
+/* 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_mbrlen = yes; then
+      dnl On Minix 3.1.8, the system's <wchar.h> declares mbrlen() although
+      dnl it does not have the function. Avoid a collision with gnulib's
+      dnl replacement.
+      REPLACE_MBRLEN=1
+    fi
   else
     dnl Most bugs affecting the system's mbrtowc function also affect the
     dnl mbrlen function. So override mbrlen whenever mbrtowc is overridden.
@@ -22,11 +38,6 @@ AC_DEFUN([gl_FUNC_MBRLEN],
       REPLACE_MBRLEN=1
     fi
   fi
-  if test $HAVE_MBRLEN = 0 || test $REPLACE_MBRLEN = 1; then
-    gl_REPLACE_WCHAR_H
-    AC_LIBOBJ([mbrlen])
-    gl_PREREQ_MBRLEN
-  fi
 ])
 
 dnl Test whether mbrlen puts the state into non-initial state when parsing an
@@ -45,16 +56,24 @@ AC_DEFUN([gl_MBRLEN_INCOMPLETE_STATE],
       dnl is present.
 changequote(,)dnl
       case "$host_os" in
-              # Guess no on AIX and OSF/1.
-        osf*) gl_cv_func_mbrlen_incomplete_state="guessing no" ;;
-              # Guess yes otherwise.
-        *)    gl_cv_func_mbrlen_incomplete_state="guessing yes" ;;
+                     # Guess no on AIX and OSF/1.
+        aix* | osf*) gl_cv_func_mbrlen_incomplete_state="guessing no" ;;
+                     # Guess yes otherwise.
+        *)           gl_cv_func_mbrlen_incomplete_state="guessing yes" ;;
       esac
 changequote([,])dnl
       if test $LOCALE_JA != none; then
-        AC_TRY_RUN([
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
 #include <locale.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 ()
 {
@@ -69,7 +88,7 @@ int main ()
           return 1;
     }
   return 0;
-}],
+}]])],
           [gl_cv_func_mbrlen_incomplete_state=yes],
           [gl_cv_func_mbrlen_incomplete_state=no],
           [])
@@ -102,12 +121,21 @@ changequote(,)dnl
       esac
 changequote([,])dnl
       if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none; then
-        AC_TRY_RUN([
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
 #include <locale.h>
 #include <string.h>
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+   <wchar.h>.
+   BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
+   included before <wchar.h>.  */
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
 #include <wchar.h>
 int main ()
 {
+  int result = 0;
   /* This fails on Solaris.  */
   if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
     {
@@ -119,7 +147,7 @@ int main ()
         {
           input[1] = '\0';
           if (mbrlen (input + 2, 5, &state) != 1)
-            return 1;
+            result |= 1;
         }
     }
   /* This fails on HP-UX 11.11.  */
@@ -133,11 +161,11 @@ int main ()
         {
           input[1] = '\0';
           if (mbrlen (input + 2, 5, &state) != 2)
-            return 1;
+            result |= 2;
         }
     }
-  return 0;
-}],
+  return result;
+}]])],
           [gl_cv_func_mbrlen_retval=yes],
           [gl_cv_func_mbrlen_retval=no],
           [])
@@ -167,9 +195,17 @@ changequote(,)dnl
       esac
 changequote([,])dnl
       if test $LOCALE_ZH_CN != none; then
-        AC_TRY_RUN([
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
 #include <locale.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 ()
 {
@@ -183,7 +219,7 @@ int main ()
         return 1;
     }
   return 0;
-}],
+}]])],
           [gl_cv_func_mbrlen_nul_retval=yes],
           [gl_cv_func_mbrlen_nul_retval=no],
           [])