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Cc: Andrea Faulds <ajf@ajf.me>, Nikita Popov <nikita.ppv@gmail.com>, Stas Malyshev <smalyshev@sugarcrm.com>
Date: Wed, 27 Aug 2014 09:24:39 +0200
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Subject: Re: [PHP-DEV] Remove generated VM from git?
From: php@bof.de (Patrick Schaaf)

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On Tuesday 26 August 2014 21:30:16 Andrea Faulds wrote:
>
> Why would a non-internals person want to build PHP from git? That=E2=80=
=99s=20
just
> making things harder on themselves.

I disagree.

The build environment I scripted together for myself, initializes a bui=
ld=20
tree (php-src and various extensions) from git and svn. For git it also=
=20
automatically uses a local git mirror, so I only need to fetch changes=20=

once regardless of what I want to build.

This allows me to easily set up several build trees which check out=20
different tags / branches.

Furthermore I "enter" the build tree with some magic that bind-mounts,=20=

in a local mount namespace, a build-tree local directory to /opt/php (a=
nd=20
another one to /usr/lib64/apache2 for mod_php), so while building, the=20=

"outer system" PHP is completely hidden.

This bind-mounting-in-namespace stuff then permits me to simply run=20
make install, run any kind of private tests against the newly built set=
up,=20
run several of these build trees in parallel without disturbing each ot=
her,=20
and without disturbing the outer system; I can even enter this as root,=
=20
and restart apache in a build tree to test out a fresh mod_php

So, I use git as a source for building, AND I have a setup that has no=20=

php CLI available during the build.

> Besides PHP itself (should my proposal
> succeed), you need other extra dependencies, including a lexer=20
generator if
> Nikita=E2=80=99s proposal succeeds.

The difference is that none of these are both required during the build=
=20
_and_ produced by the build. They are just installed once on the build=20=

system and used by all builds.

best regards
  Patrick


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