#if defined( HAVE_MACH_CTHREADS_H )
# include <mach/cthreads.h>
-#elif defined( HAVE_CTHREAD_H
+#elif defined( HAVE_CTHREADS_H )
# include <cthreads.h>
#endif
#ifndef LDAP_PVT_THREAD_H_DONE
#define LDAP_PVT_THREAD_SET_STACK_SIZE
-#ifndef LDAP_PVT_THREAD_STACK_SIZE
+/* The size may be explicitly #defined to zero to disable it. */
+#if defined( LDAP_PVT_THREAD_STACK_SIZE ) && LDAP_PVT_THREAD_STACK_SIZE == 0
+# undef LDAP_PVT_THREAD_SET_STACK_SIZE
+#elif !defined( LDAP_PVT_THREAD_STACK_SIZE )
/* LARGE stack. Will be twice as large on 64 bit machine. */
-#define LDAP_PVT_THREAD_STACK_SIZE ( 1 * 1024 * 1024 * sizeof(void *) )
-/* May be explicitly defined to zero to disable it */
-#elif LDAP_PVT_THREAD_STACK_SIZE == 0
-#undef LDAP_PVT_THREAD_SET_STACK_SIZE
+# define LDAP_PVT_THREAD_STACK_SIZE ( 1 * 1024 * 1024 * sizeof(void *) )
#endif
#endif /* !LDAP_PVT_THREAD_H_DONE */