From 0b93e4ec5c09708ab425185d379949e42edad60b Mon Sep 17 00:00:00 2001
From: "jan.nijtmans" <nijtmans@users.sourceforge.net>
Date: Sun, 11 Aug 2013 14:51:37 +0000
Subject: Sync with Tcl version of tcl.m4

---
 unix/configure | 5 +++++
 unix/tcl.m4    | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/unix/configure b/unix/configure
index 3682600..2683a29 100755
--- a/unix/configure
+++ b/unix/configure
@@ -4035,6 +4035,10 @@ echo "$as_me: WARNING: Don't know how to find pthread lib on your system - you m
 	# Does the pthread-implementation provide
 	# 'pthread_attr_setstacksize' ?
 
+	ac_saved_libs=$LIBS
+	LIBS="$LIBS $THREADS_LIBS"
+
+
 for ac_func in pthread_attr_setstacksize pthread_atfork
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
@@ -4136,6 +4140,7 @@ _ACEOF
 fi
 done
 
+	LIBS=$ac_saved_libs
     else
 	TCL_THREADS=0
     fi
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index f12d0a8..194cf90 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -676,7 +676,11 @@ AC_DEFUN([SC_ENABLE_THREADS], [
 
 	# Does the pthread-implementation provide
 	# 'pthread_attr_setstacksize' ?
+
+	ac_saved_libs=$LIBS
+	LIBS="$LIBS $THREADS_LIBS"
 	AC_CHECK_FUNCS(pthread_attr_setstacksize pthread_atfork)
+	LIBS=$ac_saved_libs
     else
 	TCL_THREADS=0
     fi
-- 
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