Define NULL, not previously defined by any of the include files.

diff --git a/v7/src/microcode/termcap.c b/v7/src/microcode/termcap.c
index 5e098127a1442843e2dcf3fcbe3d89f3a7540fff..301150acabf2b541a3a11d3f3e5d9c128755a551 100644 (file)
--- a/v7/src/microcode/termcap.c
+++ b/v7/src/microcode/termcap.c
@@ -142,6 +142,10 @@ int bufsize = 128;
 # endif /* __STDC__ */
 #endif /* PTR */
 
+#ifndef NULL
+#define NULL 0
+#endif
+
 static
 memory_out ()
 {