Fixes for -fno-common
https://github.com/rubund/graywolf/commit/f47937b66d4d44eafc4224f7c43d556dbf88f05b

Index: src/twsc/parser.h
--- src/twsc/parser.h.orig
+++ src/twsc/parser.h
@@ -32,7 +32,6 @@ REVISIONS:  
 EXTERN SWAPBOX *swap_group_listG ;
 EXTERN BOOL one_pin_feedthruG ;
 
-EXTERN INT maxCellOG ;
 EXTERN INT case_unequiv_pinG ;
 EXTERN INT celllenG ;
 EXTERN INT cells_per_clusterG ;
