Apply Hallvard's D4 pthread detection patch.

configure.in

@@ -567,8 +567,13 @@ if test $ol_with_threads = auto -o $ol_with_threads = yes \
 				dnl save the flags
 				save_LIBS="$LIBS"
 				LIBS="-kthread $LIBS"
-				AC_TRY_LINK([#include <pthread.h>],
-					[pthread_create(NULL,NULL,NULL,NULL);],
+				AC_TRY_LINK([#include <pthread.h>],[
+#if HAVE_PTHREADS_D4
+	pthread_create(NULL,pthread_attr_default,NULL,NULL);
+#else
+	pthread_create(NULL,NULL,NULL,NULL);
+#endif
+],
 					[ol_cv_kthread_flag=yes], [ol_cv_kthread_flag=no])
 				dnl restore the LIBS
 				LIBS="$save_LIBS"
@@ -587,8 +592,13 @@ if test $ol_with_threads = auto -o $ol_with_threads = yes \
 				dnl save the flags
 				save_LIBS="$LIBS"
 				LIBS="-pthread $LIBS"
-				AC_TRY_LINK([#include <pthread.h>],
-					[pthread_create(NULL,NULL,NULL,NULL);],
+				AC_TRY_LINK([#include <pthread.h>],[
+#if HAVE_PTHREADS_D4
+	pthread_create(NULL,pthread_attr_default,NULL,NULL);
+#else
+	pthread_create(NULL,NULL,NULL,NULL);
+#endif
+],
 					[ol_cv_pthread_flag=yes], [ol_cv_pthread_flag=no])
 				dnl restore the LIBS
 				LIBS="$save_LIBS"
@@ -607,8 +617,13 @@ if test $ol_with_threads = auto -o $ol_with_threads = yes \
 				dnl save the flags
 				save_LIBS="$LIBS"
 				LIBS="-pthreads $LIBS"
-				AC_TRY_LINK([#include <pthread.h>],
-					[pthread_create(NULL,NULL,NULL,NULL);],
+				AC_TRY_LINK([#include <pthread.h>],[
+#if HAVE_PTHREADS_D4
+	pthread_create(NULL,pthread_attr_default,NULL,NULL);
+#else
+	pthread_create(NULL,NULL,NULL,NULL);
+#endif
+],
 					[ol_cv_pthreads_flag=yes], [ol_cv_pthreads_flag=no])
 				dnl restore the LIBS
 				LIBS="$save_LIBS"
@@ -879,7 +894,11 @@ int main(argc, argv)
 	char **argv;
 {
 	pthread_t t;
+#if HAVE_PTHREADS_D4
+	exit(pthread_create(&t, pthread_attr_default, task, NULL));
+#else
 	exit(pthread_create(&t, NULL, task, NULL));
+#endif
 }
 ],
 				[ol_cv_pthread_create_works=yes],
@@ -953,7 +972,11 @@ int main(argc, argv)
 #endif
 #endif
 
+#if HAVE_PTHREADS_D4
+	pthread_create(&t, pthread_attr_default, task, NULL);
+#else
 	pthread_create(&t, NULL, task, NULL);
+#endif
 
 #if HAVE_SCHED_YIELD
 	sched_yield();	/* make sure task runs first */

include/portable.h.in

@@ -109,36 +109,9 @@
 #undef _THREAD_SAFE
 #endif
 
-/* define this if toupper() requires tolower() check */
-#undef C_UPPER_LOWER
-
-/* define this to the number of arguments ctime_r() expects */
-#undef CTIME_R_NARGS
-
-/* define this to the number of arguments gethostbyaddr_r expects */
-#undef GETHOSTBYADDR_R_NARGS
-
-/* define this to the number of arguments gethostbyname_r expects */
-#undef GETHOSTBYNAME_R_NARGS
-
-/* define this if sys_errlist is not defined in stdio.h or errno.h */
-#undef DECL_SYS_ERRLIST
-
-/* define if you have berkeley db */
-#undef HAVE_BERKELEY_DB
-
-/* define if you have berkeley db2 */
-#undef HAVE_BERKELEY_DB2
-
 /* define if you have crypt */
 #undef HAVE_CRYPT
 
-/* define if you have GDBM */
-#undef HAVE_GDBM
-
-/* define if you have NDBM */
-#undef HAVE_NDBM
-
 /* define if you have res_search() */
 #ifdef __notdef__
 /* see second res_search define */
@@ -588,10 +561,10 @@
 /* define if you have Kerberos */
 #undef HAVE_KERBEROS
 
-/* define if you have SSLeay  */
+/* define if you have SSLeay or OpenSSL */
 #undef HAVE_SSLEAY
 
-/* define if you have TLS  */
+/* define if you have TLS */
 #undef HAVE_TLS
 
 /* define if pthreads API compatible with final spec */
@@ -624,6 +597,18 @@
 /* define if you have (or want) no threads */
 #undef NO_THREADS
 
+/* define if Berkeley DBv2 is available */
+#undef HAVE_BERKELEY_DB2
+
+/* define if Berkeley DB is available */
+#undef HAVE_BERKELEY_DB
+
+/* define if GNU DBM is available */
+#undef HAVE_GDBM
+
+/* define if NDBM is available */
+#undef HAVE_NDBM
+
 /* define if you have -lwrap */
 #undef HAVE_TCPD
 
@@ -645,9 +630,27 @@
 /* Define if system has ptrdiff_t type */
 #undef HAVE_PTRDIFF_T
 
+/* define if toupper() requires islower() */
+#undef C_UPPER_LOWER
+
 /* define if cross compiling */
 #undef CROSS_COMPILING
 
+/* set to the number of arguments ctime_r() expects */
+#undef CTIME_R_NARGS
+
+/* define if ctime_r() returns int */
+#undef CTIME_R_RETURNS_INT
+
+/* set to the number of arguments gethostbyname_r() expects */
+#undef GETHOSTBYNAME_R_NARGS
+
+/* set to the number of arguments gethostbyaddr_r() expects */
+#undef GETHOSTBYADDR_R_NARGS
+
+/* define if sys_errlist is declared in stdio.h or errno.h */
+#undef DECL_SYS_ERRLIST
+
 /* begin of postamble */
 
 #ifdef HAVE_STDDEF_H