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Date: Mon, 14 Jan 2013 19:35:07 -0800
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Subject: Re: [PHP-DEV] PHP 5.4.10 can not build Zend/PHP parsers with bison
 2.6.5
From: christopher.jones@oracle.com (Christopher Jones)



On 01/14/2013 05:16 PM, Dennis Clarke wrote:
>
> Dear PHP/Zend folks :
>
>      This is a bug I think. I recently saw that PHP had been updated to 5.4.10 and I
> decided to update my php bits in /usr/local. I was quite surprised to see in the
> configure output this warning about bison :
>
> checking for bison... bison -y
> checking for bison version... invalid
> configure: WARNING: bison versions supported for regeneration of the Zend/PHP parsers: 1.28 1.35 1.75 1.875 2.0 2.1 2.2 2.3 2.4 2.4.1 2.4.2 2.4.3 2.5 2.5.1 2.6 2.6.1 2.6.2 (found: 2.6.5).
>
>      This seems odd to me as bison 2.6.5 builds and tests perfectly on my Solaris 10
> server and so therefore I wonder what these PHP folks are on about?  Is this a "Warning"
> or a real configure fault?  If the latter then I need to backout bison in order to build
> PHP and then re-install a perfectly functional bison ?
>
> Dennis Clarke
>

Unless you are hacking PHP you can ignore Bison. Check the Makefile
for where it is used.  The PHP distribution contains
Zend/zend_language_parser.[ch] and php-5.5/Zend/zend_ini_parser.[ch]
already built from their respective .y files so bison is not
generally invoked when building PHP.

Of course, if 2.6.5 is verified than it should be added to
bison_version_list in Zend/acinclude.m4.  Feel free to regenerate the
parsers with it, review the test suite results, and create a github
pull request.

Chirs

-- 
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