On 06/26/2012 04:34 PM, Akim Demaille wrote: > Hi Stefano, > > Thanks for this! > > Le 25 juin 2012 à 16:01, Stefano Lattarini a écrit : > >> When used with good yacc and lex implementations, like Flex and GNU Bison, >> the 'ylwarp' > > ylwrap > >> script (meant to work around the deficiencies of older or >> inferior yacc and lex implementations) creates far more problems and >> annoyances than it solves. For more details, just see the huge amount of >> related bug reports and complaints: >> > >> use will allow us to switch the default in Automake 1.13 (i.e., we will >> start *not* using ylwrap by default) while still supporting users who >> want to continue using ylwrap. > > Shouldn't some Autoconf machinery just check if -o is supported? > This is probably a better idea, yes. This could probably be done by enhancing AM_PROG_LEX and defining a similar new AM_PROG_YACC macro. Or better again, it could be done directly in AC_PROG_LEX and AC_PROG_YACC, so that we could just rely on them in the future (in the meantime, we could copy their new definitions in our 'm4/' directories, so that the new improved definitions will still be accessible to users with older Autoconfs).
> I don't see the need for the user to have to decide whether > to use ylwrap or not. But I agree this is certainly harder to do. > Not much harder actually; and it's certainly much nicer to DTRT instead of throwing another knob to tweak to the poor developer. So I'll certainly give your proposal a try. Thanks, Stefano
