X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fstrndup.m4;h=e1ac20b8aa437cb32eee9edcc1ec84b4dc78ac99;hb=060a5ab2b25c067185f3c3c077287c65723ea985;hp=437e7f650e6376c06d0f5031c580ef57fa3d1986;hpb=587f0edadfcadc708f6144de37a0653e81518484;p=gnulib.git

diff --git a/m4/strndup.m4 b/m4/strndup.m4
index 437e7f650..e1ac20b8a 100644
--- a/m4/strndup.m4
+++ b/m4/strndup.m4
@@ -1,5 +1,5 @@
-# strndup.m4 serial 17
-dnl Copyright (C) 2002-2003, 2005-2009 Free Software Foundation, Inc.
+# strndup.m4 serial 20
+dnl Copyright (C) 2002-2003, 2005-2011 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.
@@ -18,13 +18,18 @@ AC_DEFUN([gl_FUNC_STRNDUP],
   fi
 
   if test $ac_cv_func_strndup = yes; then
+    HAVE_STRNDUP=1
     # AIX 4.3.3, AIX 5.1 have a function that fails to add the terminating '\0'.
     AC_CACHE_CHECK([for working strndup], [gl_cv_func_strndup_works],
       [AC_RUN_IFELSE([
          AC_LANG_PROGRAM([[#include <string.h>
-			   #include <stdlib.h>]], [[
+                           #include <stdlib.h>]], [[
 #ifndef HAVE_DECL_STRNDUP
-  extern char *strndup (const char *, size_t);
+  extern
+  #ifdef __cplusplus
+  "C"
+  #endif
+  char *strndup (const char *, size_t);
 #endif
   char *s;
   s = strndup ("some longer string", 15);
@@ -33,17 +38,18 @@ AC_DEFUN([gl_FUNC_STRNDUP],
   return s[13] != '\0';]])],
          [gl_cv_func_strndup_works=yes],
          [gl_cv_func_strndup_works=no],
-         [case $host_os in
-            aix*) gl_cv_func_strndup_works="guessing no";;
-            *) gl_cv_func_strndup_works="guessing yes";;
-          esac])])
+         [
+changequote(,)dnl
+          case $host_os in
+            aix | aix[3-6]*) gl_cv_func_strndup_works="guessing no";;
+            *)               gl_cv_func_strndup_works="guessing yes";;
+          esac
+changequote([,])dnl
+         ])])
     case $gl_cv_func_strndup_works in
-      *no)
-        REPLACE_STRNDUP=1
-        AC_LIBOBJ([strndup])
-        ;;
+      *no) REPLACE_STRNDUP=1 ;;
     esac
   else
-    AC_LIBOBJ([strndup])
+    HAVE_STRNDUP=0
   fi
 ])