Re: [PHP-DEV] Bug #1619: apxs and --with-system-regex doesn't combine, causing crash From: Jim Winstead (jimw <email protected>)
Date: 06/30/99

It shouldn't be a three-way choice. The regex package included with
PHP and the one included with Apache are identical.

Jim

Rene' Seindal wrote:
>
> HI,
>
> I have now experimented a bit more with this.
>
> I have taken down some patches to php.h and configure.in from CVS
> regarding compilation with apxs.
>
> I think part of the problem with the autoconf logic around
> --with-system-regex is because it is sometimes a three way choice, not a
> two way choice.
>
> When compiling php as a cgi-program, there are the choices of using the
> bundled Henry Spencer regexp lib og using the GNU based libc code (at
> least on my system).
>
> When compiling php as an Apache module, there are the three posibilities
> of using the bundled HS lib, of using the HS lib in apache (if
> configured), or of using the libc version.
>
> Or, the other way around:
> If apache is compiled to use the libc regexps, there are two choices for
> php, but if apache is compiled with --enable-rule=WANTHSREGEX, there are
> three posibilities.
>
> The changes made by Sascha Schumann in CVS doesn't handle the three way
> choice. I compiled apache with HSREGEX and php with
> --with-system-regex, but then configure took the bundled regex anyway.
> Now I have apache with its own regex code, php with its own and libc
> regexps unused.
>
> Currently (with the cvs change) the confgure.in code is like (in some
> home made pseudo code:
>
> if using apxs
> if apache uses hsregex
> use bundled regex
> else
> use libc
> endif
> else
> if with-system-regex == no
> use bundled regex
> else
> use libc
> endif
> endif
>
> I think something like this would be more appropriate, causing
> --with-system-regex to mean whatever apache uses, when php is compiled
> as module.
>
> If using apxs
> if with-system-regex == no
> use bundled regex
> else
> /* do as apache does */
> if apache uses hsregex
> use apache's regex code
> else
> use libc
> endif
> endif
> else
> if with-system-regex == no
> use bundled regex
> else
> use libc
> endif
> endif
>
> Whether --with-system-regex should be interpreted like that is up to you
> the developers. Other interpretations could be made.
>
> I hope this is of a little help.
>
> Sascha Schumann wrote:
> >
> > On Mon, Jun 28, 1999 at 11:00:41PM -0000, rene <email protected> wrote:
> > > From: rene <email protected>
> > > Operating system: linux 2.0.36/slackware 3.6
> > > PHP version: 3.0.11
> > > PHP Bug Type: Reproduceable crash
> > > Bug description: apxs and --with-system-regex doesn't combine, causing crash
> > >
> > > For some unknown reason the bundled regex doesn't work anymore (for me). Maybe it is connected to the (new?) PCRE code??
> > >
> > > The bundled regex did work for me with 3.0.9
> > >
> > > When I used --with-system-regex, config.h didn't change.
> >
> > PHP uses the configuration from Apache.
> >
> > If you want system regex, compile Apache with
> > --enable-rule=WANTHSREGEX and PHP will use that, too.
>
> --
> René Seindal (rene <email protected>) http://www.seindal.dk/rene/
>
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