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Re: [Xen-devel] [PATCH] libxl: Fix building libxlu_cfg_y.y with bison 3.0

On Wed, Dec 03, Ian Campbell wrote:

> There was a point in time where the prevailing version of bison (or
> maybe flex) in stable distro releases had a bug which meant these files
> could not be regenerated easily on common distros. I don't recall the
> details well enough to know if that time has now passed. Perhaps Ian J
> does.

Its very easy to build a private bison/flex/whatever and use this
instead of one from the system. Our configure can easily detect a broken
version and refuse to compile.  After all we dont ship .i or .s files
because some compilers happen to optimize better.


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