Re: [Mesa-dev] Mesa (master): glsl: do not use deprecated bison-keyword
Akim Demaille <[email protected]>
| Newsgroups | gmane.comp.parsers.bison.general,gmane.comp.video.mesa3d.devel |
|---|---|
| Message-ID | <[email protected]> |
Hi Erik, > Le 22 mai 2019 à 08:54, Erik Faye-Lund <[email protected]> a écrit : > > I ended up reverting the change [from-%error-verbose to %define parse.error verbose] , and I can't find an obcious way to > support both old and new versions with the same source file. Well, you just disable warnings about deprecated features. -Wno-deprecated. > The Android SDK also ships a pre-3.x version of Bison, so you're not > the only one affected. Also, Chocolatey doesn't provide a new enough > version of Bison for Windows either. I would be interested in knowing why some distros lag. Do you happen to know why for some of them? > The problem is that Bison doesn't seem to have any mechanism for doing > statements like these conditionally. We try to keep your sources nice and clean, and using %if or things like this is anything but nice. So far these old directives are not a maintenance burden, so there is no plan to drop support for them. But still, at least for consistency, I promote the newest forms. > The only way around that that I > can see is to pre-process the source files somehow. But especially with > three different build systems, that's not really a venue I find > particularly attractive. If someone can think of a neat solution, I > would certainly love to hear about it :) Don't do that! > For now I guess we can just live with the warning. But whenever the > Bison devs decide to remove support for %error-verbose, I fear that > we'll either have to drop support for older versions or live with pre- > processing. This should not happen. What should happen though, is that distros stop shipping old versions. [generating the parsers in the tarballs] > I don't really think this would work for us in Mesa. We no longer > generate the distribution using autotools since we switched to Meson, > we just do git archive these days. Well, I think that's a pity. The distinction between end user tools and maintainer tools is a useful one. As exemplified by the issue at hand. _______________________________________________ [email protected] https://lists.gnu.org/mailman/listinfo/help-bison