X-Git-Url: https://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fstrerror_r.m4;h=341f9836b560e548042df62e6739f3291831d532;hb=da8054d48dc22e1c051db54049e005d51a006e69;hp=f6aceff642f063be48f504d3c1e75dfbc02bcfa6;hpb=c74873191b6e585cdd5a3b2ce5e07edae1427cef;p=gnulib.git

diff --git a/m4/strerror_r.m4 b/m4/strerror_r.m4
index f6aceff64..341f9836b 100644
--- a/m4/strerror_r.m4
+++ b/m4/strerror_r.m4
@@ -1,5 +1,5 @@
-# strerror_r.m4 serial 12
-dnl Copyright (C) 2002, 2007-2011 Free Software Foundation, Inc.
+# strerror_r.m4 serial 15
+dnl Copyright (C) 2002, 2007-2013 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.
@@ -43,6 +43,7 @@ AC_DEFUN([gl_PREREQ_STRERROR_R], [
   dnl glibc >= 2.3.4 and cygwin 1.7.9 have a function __xpg_strerror_r.
   AC_CHECK_FUNCS_ONCE([__xpg_strerror_r])
   AC_CHECK_FUNCS_ONCE([catgets])
+  AC_CHECK_FUNCS_ONCE([snprintf])
 ])
 
 # Detect if strerror_r works, but without affecting whether a replacement
@@ -75,7 +76,7 @@ AC_DEFUN([gl_FUNC_STRERROR_R_WORKS],
         dnl HP-UX 11.31 strerror_r always fails when the buffer length argument
         dnl is less than 80.
         dnl FreeBSD 8.s strerror_r claims failure on 0
-        dnl MacOS X 10.5 strerror_r treats 0 like -1
+        dnl Mac OS X 10.5 strerror_r treats 0 like -1
         dnl Solaris 10 strerror_r corrupts errno on failure
         AC_CACHE_CHECK([whether strerror_r works],
           [gl_cv_func_strerror_r_works],
@@ -138,7 +139,11 @@ changequote([,])dnl
                [AC_LANG_PROGRAM(
                   [[#include <errno.h>
                     #include <string.h>
-                    extern int __xpg_strerror_r(int, char *, size_t);
+                    extern
+                    #ifdef __cplusplus
+                    "C"
+                    #endif
+                    int __xpg_strerror_r(int, char *, size_t);
                   ]],
                   [[int result = 0;
                     char buf[256] = "^";