Re: [Xen-devel] bison/flex version requirements

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2013-05-13 at 16:03 +0100, Ian Jackson wrote:
> Jan Beulich writes ("Re: [Xen-devel] bison/flex version requirements"):
> > On 13.05.13 at 16:52, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> wrote:
> > > We depend on `yylex_init_extra' which was introduced in flex 2.5.34
> > > released in December 2007.
> > 
> > So minimally the configure script should then actually check for this.
> 
> It would be OK for it to issue a warning IMO.  I don't think it should
> be an error because we do in fact supply pregenerated files for the
> uses of prehistoric distros.

It should warn and not set $(FLEX) or $(BISON), since the version on the
system is not sufficient it should be treated as not present.

Ian.



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