From 9c80832e08ba5233c6816a72ddf2c654630416f7 Mon Sep 17 00:00:00 2001
From: Howard Chu <hyc@openldap.org>
Date: Wed, 18 Sep 2002 00:11:53 +0000
Subject: [PATCH] Fix pthread version check again

---
 build/openldap.m4 | 27 ++++++++++++++-------------
 1 file changed, 14 insertions(+), 13 deletions(-)

diff --git a/build/openldap.m4 b/build/openldap.m4
index 8369493b66..e49cebf15d 100644
--- a/build/openldap.m4
+++ b/build/openldap.m4
@@ -621,47 +621,48 @@ dnl
 dnl ====================================================================
 dnl Check POSIX Thread version 
 dnl
-dnl defines ol_cv_pthread_version to 4, 5, 6, 7, 10, depending on the
+dnl defines ol_cv_pthread_version to 4, 5, 6, 7, 8, 10, depending on the
 dnl	version of the POSIX.4a Draft that is implemented.
 dnl	10 == POSIX.4a Final == POSIX.1c-1996 for our purposes.
-dnl	Existence of pthreads.h should be tested separately.
+dnl	Existence of pthread.h should be tested separately.
 dnl
 dnl tests:
-dnl	pthread_yield() was dropped in Draft 9, so
-dnl		only a Draft <= 8 library will define this
 dnl	pthread_detach() was dropped in Draft 8, it is present
 dnl		in every other version
 dnl	PTHREAD_CREATE_UNDETACHED is only in Draft 7, it was called
 dnl		PTHREAD_CREATE_JOINABLE after that
+dnl	pthread_attr_create was renamed to pthread_attr_init in Draft 6.
+dnl		Draft 6-10 has _init, Draft 4-5 has _create.
 dnl	pthread_attr_default was dropped in Draft 6, only 4 and 5 have it
 dnl	PTHREAD_MUTEX_INITIALIZER was introduced in Draft 5. It's not
 dnl		interesting to us because we don't try to statically
 dnl		initialize mutexes. 5-10 has it.
-dnl	pthread_attr_create was renamed to pthread_attr_init in Draft 6.
-dnl		Draft 6-10 has _init, Draft 4-5 has _create.
 dnl
 dnl Draft 9 and 10 are equivalent for our purposes.
 dnl
 AC_DEFUN([OL_POSIX_THREAD_VERSION],
 [AC_CACHE_CHECK([POSIX thread version],[ol_cv_pthread_version],[
-	AC_EGREP_HEADER(pthread_yield,pthread.h,[
-	AC_EGREP_HEADER(pthread_detach,pthread.h,[
+	AC_TRY_COMPILE([
+#		include <pthread.h>
+	],[
+		int i = PTHREAD_CREATE_JOINABLE;
+	],[
+	AC_EGREP_HEADER(pthread_detach,pthread.h,
+	ol_cv_pthread_version=10, ol_cv_pthread_version=8)],[
 	AC_EGREP_CPP(draft7,[
 #		include <pthread.h>
 #		ifdef PTHREAD_CREATE_UNDETACHED
 		draft7
 #		endif
 	], ol_cv_pthread_version=7, [
-	AC_EGREP_HEADER(pthread_attr_default,pthread.h,[
+	AC_EGREP_HEADER(pthread_attr_init,pthread.h,
+	ol_cv_pthread_version=6, [
 	AC_EGREP_CPP(draft5,[
 #		include <pthread.h>
 #ifdef		PTHREAD_MUTEX_INITIALIZER
 		draft5
 #endif
-	], ol_cv_pthread_version=5, ol_cv_pthread_version=4) ],
-	ol_cv_pthread_version=6) ]) ],
-	ol_cv_pthread_version=8) ],
-	ol_cv_pthread_version=10)
+	], ol_cv_pthread_version=5, ol_cv_pthread_version=4) ]) ]) ])
 ])
 ])dnl
 dnl
-- 
2.39.5