Disable support for SunOS LWP

diff --git a/Python/thread.c b/Python/thread.c
index 5b8ec10b5c57443019bbd8df314dc062874266df..acb2103884af091e147bc6103041f14fc1cd3095 100644 (file)
--- a/Python/thread.c
+++ b/Python/thread.c
@@ -109,6 +109,7 @@ static size_t _pythread_stacksize = 0;
 #endif
 
 #ifdef SUN_LWP
+#error SunOS lightweight processes are now unsupported, and code will be removed in 3.3.
 #include "thread_lwp.h"
 #endif