Make.rules.in: Add variables for BISONFLAGS and LEXFLAGS.

[Alexandre Julliard]

Robert Shearman <rob at codeweavers.com> writes:

> Make BISONFLAGS default to generating debug information so that parser
> tracing works in the various tools.

You should add this to the makefile of the tool you want to debug.
There's no reason to force it for all parsers, and defining it in
Make.rules prevents individual makefiles from having their own flags.

-- 
Alexandre Julliard
julliard at winehq.org