Issue #4028: Make multiprocessing build on SunOS.

diff --git a/Modules/_multiprocessing/multiprocessing.c b/Modules/_multiprocessing/multiprocessing.c
index 31a8da846775b651b1ccae75cb97151ba2cab90e..c831637f901c519343aa0485546531e49d926a5e 100644 (file)
--- a/Modules/_multiprocessing/multiprocessing.c
+++ b/Modules/_multiprocessing/multiprocessing.c
@@ -8,7 +8,7 @@
 
 #include "multiprocessing.h"
 
-#ifdef SCM_RIGHTS
+#if (defined(CMSG_LEN) && defined(SCM_RIGHTS))
     #define HAVE_FD_TRANSFER 1
 #else
     #define HAVE_FD_TRANSFER 0