Declare that YYLSTYPE is not the default trivial datatype used by bison. (was causing compile errors in bison ver >= 2.7)
--- a/stage1_2/iec_bison.yy Thu Apr 04 18:55:20 2013 +0100
+++ b/stage1_2/iec_bison.yy Fri Jul 19 13:31:35 2013 +0100
@@ -276,7 +276,7 @@
long int last_order;
} YYLTYPE;
#define YYLTYPE_IS_DECLARED 1
-#define YYLTYPE_IS_TRIVIAL 1
+#define YYLTYPE_IS_TRIVIAL 0
#endif
}