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

>>> On 13.05.13 at 17:03, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> 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.

Would such a warning be noticeable in any way? I.e. before running
into the subsequent build error? If not, there's little point in adding
one, and then only adding the minimal version to README might be
what can usefully be done.


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