From 804335f9d296440bb708ca844f5d89b58b50b0c6 Mon Sep 17 00:00:00 2001
From: runge <runge@karlrunge.com>
Date: Thu, 21 May 2009 10:32:18 -0400
Subject: Thread safety for zrle, zlib, tight. Proposed tight security type fix
 for debian bug 517422.

---
 configure.ac | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 3f48b26..65e258c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -628,6 +628,13 @@ if test "x$with_pthread" != "xno"; then
 fi
 AM_CONDITIONAL(HAVE_LIBPTHREAD, test ! -z "$HAVE_LIBPTHREAD")
 
+AC_MSG_CHECKING([for __thread])
+AC_LINK_IFELSE([AC_LANG_PROGRAM(, [static __thread int p = 0])],
+	       [AC_DEFINE(HAVE_TLS, 1,
+		      Define to 1 if compiler supports __thread)
+		AC_MSG_RESULT([yes])],
+	       [AC_MSG_RESULT([no])])
+
 # tightvnc-filetransfer implemented using threads:
 if test -z "$HAVE_LIBPTHREAD"; then
 	with_tightvnc_filetransfer=""
-- 
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