diff -up ncl_ncarg-5.2.1/config/ymake.secondary ncl_ncarg-5.2.1/config/ymake
--- ncl_ncarg-5.2.1/config/ymake.secondary	2010-09-06 10:16:02.587814170 -0400
+++ ncl_ncarg-5.2.1/config/ymake	2010-09-06 10:38:59.887472612 -0400
@@ -373,6 +373,9 @@ case    Linux:
         case    i*64:
         case    x*64:
         case    ppc*:
+        case    s390*:
+        case    sparc*:
+        case    arm*:
         case    alpha:
             set model   = $mach
             set arch    = $mach