From 6e7a0f7f75b46a5980ca711a8fc674c64c9567dd Mon Sep 17 00:00:00 2001
From: Ivan Maidanski <ivmai@mail.ru>
Date: Sun, 26 May 2013 16:32:32 +0400
Subject: Define AO_NO_PTHREADS in configure if no pthreads (Win32 and VxWorks)

* configure.ac (have_pthreads): Do not define to true if check for
pthread_self failed.
* configure.ac (AO_NO_PTHREADS): Define if not have_pthreads.
---
 configure.ac | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/configure.ac b/configure.ac
index 3701650..be79faf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -141,10 +141,11 @@ AH_TEMPLATE([AO_WEAK_DOUBLE_CAS_EMULATION],
 AC_DEFINE(_REENTRANT, 1, [Required define if using POSIX threads.])
 
 # Libraries needed to support threads (if any).
-THREADDLLIBS=
-have_pthreads=true
-AC_CHECK_LIB(pthread, pthread_self, THREADDLLIBS="-lpthread",,)
-case "$host" in
+have_pthreads=false
+AC_CHECK_LIB(pthread, pthread_self, have_pthreads=true)
+if test x$have_pthreads = xtrue; then
+  THREADDLLIBS=-lpthread
+  case "$host" in
     *-*-netbsd*)
       # Indicates the use of pthreads.
       AC_DEFINE(_PTHREADS)
@@ -163,7 +164,12 @@ case "$host" in
       # Skip test_atomic_pthreads.
       have_pthreads=false
       ;;
-esac
+  esac
+else
+  AC_DEFINE([AO_NO_PTHREADS], 1, [No pthreads library available])
+  # Assume VxWorks or Win32.
+  THREADDLLIBS=
+fi
 AC_SUBST(THREADDLLIBS)
 
 AM_CONDITIONAL(HAVE_PTHREAD_H, test x$have_pthreads = xtrue)
-- 
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