X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fioctl.m4;h=1463af42274201d68ef93ab227a0b159df7ab8b3;hb=cdceb2fe48e39f4fff25f6f4cb34bbab88c2856f;hp=e799600f95381e7b6c847ce5f2ba24b38ba9006f;hpb=da0c838e760661390dd503195fb5b2c7e8a5ddd7;p=gnulib.git

diff --git a/m4/ioctl.m4 b/m4/ioctl.m4
index e799600f9..1463af422 100644
--- a/m4/ioctl.m4
+++ b/m4/ioctl.m4
@@ -1,5 +1,5 @@
-# ioctl.m4 serial 3
-dnl Copyright (C) 2008-2011 Free Software Foundation, Inc.
+# ioctl.m4 serial 4
+dnl Copyright (C) 2008-2013 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.
@@ -24,7 +24,12 @@ AC_DEFUN([gl_FUNC_IOCTL],
       [AC_COMPILE_IFELSE(
          [AC_LANG_PROGRAM(
             [[#include <sys/ioctl.h>]],
-            [[extern int ioctl (int, int, ...);]])
+            [[extern
+              #ifdef __cplusplus
+              "C"
+              #endif
+              int ioctl (int, int, ...);
+            ]])
          ],
          [gl_cv_func_ioctl_posix_signature=yes],
          [gl_cv_func_ioctl_posix_signature=no])