From 7df91b01fc558a33941c5c5f31abbcdc53a729fb Mon Sep 17 00:00:00 2001
From: Darren Tucker <dtucker@zip.com.au>
Date: Thu, 14 Jul 2016 12:25:24 +1000
Subject: [PATCH] Check for VIS_ALL.

If we don't have it, set BROKEN_STRNVIS to activate the compat replacement.
---
 configure.ac | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/configure.ac b/configure.ac
index f6c44b874..2439e3948 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1405,6 +1405,9 @@ g.gl_statv = NULL;
 
 AC_CHECK_DECLS([GLOB_NOMATCH], , , [#include <glob.h>])
 
+AC_CHECK_DECL([VIS_ALL], ,
+    AC_DEFINE(BROKEN_STRNVIS, 1, [missing VIS_ALL]), [#include <vis.h>])
+
 AC_MSG_CHECKING([whether struct dirent allocates space for d_name])
 AC_RUN_IFELSE(
 	[AC_LANG_PROGRAM([[