Bug 511658

Summary:	>=www-servers/apache-2.4: multiple MPMs not supported
Product:	Gentoo Linux	Reporter:	Michael Orlitzky <mjo>
Component:	Current packages	Assignee:	Apache Team - Bugzilla Reports <apache-bugs>
Status:	CONFIRMED ---
Severity:	normal	CC:	arthur, grknight, leho, pacho, slawomir.nizio
Priority:	Normal	Keywords:	PATCH
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	http://httpd.apache.org/docs/2.4/mpm.html
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:
Bug Blocks:	551078
Attachments:	apache-2.eclsas.patch

Description Michael Orlitzky gentoo-dev

2014-05-28 01:46:58 UTC

In apache 2.4, multiple MPMs are supported when compiled as shared modules. The choice of MPM is then made at runtime using LoadModule (see URL).

This doesn't work in Gentoo:

  $ APACHE2_MPMS="worker prefork" emerge -1 apache
  ...
   * You have selected more then one mpm USE-flag.
   * Only one MPM is supported.
   * ERROR: www-servers/apache-2.4.9-r3::gentoo failed (setup phase):
   *   more then one mpm was specified

There's a restriction in the eclass, but to support more than one, the --enable-shared-mpms configure option will need to be used.

Note: at the moment, this gives us a correspondence between USE=threads and APACHE2_MPMS; i.e. I can tell if the user has a threaded MPM selected by the presence of USE=threads, since he can have only one MPM selected. I'm going to abuse that fact in the mpm_itk ebuild, so if we ever allow multiple MPMs, please ping me to update the USE depencency.

Comment 1 Lars Wendler (Polynomial-C) (RETIRED) gentoo-dev

2014-05-28 06:20:35 UTC

Woah... this will require quite some changes in apache-2.eclass. I cannot promise a quick fix.

Comment 2 Michael Orlitzky gentoo-dev

2014-05-28 13:12:00 UTC

No problem, I'm not asking for one. Nobody else missed it, and it can't affect upgraders.

I opened this mostly so I wouldn't feel guilty depending on apache[-threads] in mpm_itk.

Comment 3 Brian Evans (RETIRED) gentoo-dev

2016-10-11 19:00:07 UTC

Created attachment 449894 [details, diff]
apache-2.eclsas.patch

Here are small changes to apache-2.eclass to support multiple MPMs by a variable in the ebuild