====== Gentoo Linux: Apache ======

  * [[Apache]]
  * [[Apache Worker MPM PHP CGI Suexec Setup]]
  * [[Gentoo]]

Running Apache on Gentoo gives you a lot of flexibility.  However, out of the box, there are a lot of modules that are not used in many client configurations.
==== Modules ====

The modules that Apache is built with can be set by ''APACHE2_MODULES'' in ''/etc/make.conf''.

Here is a trimmed down version that removes many unused modules.

<code>
APACHE2_MODULES="actions alias auth_basic authn_default auth_digest authn_file authz_default
authz_host authz_user autoindex cache cgi cgid deflate dir disk_cache env expires file_cache
filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite
setenvif status unique_id userdir vhost_alias"
</code>

==== MPMS ====

Gentoo lets you configure the MPM in use.  The most common ones are ''prefork'' and ''worker'', with ''prefork'' being the default.  You can change this in ''make.conf''.

<code>APACHE2_MPMS="worker"</code>

==== Optimization ====

You can build Apache, or any program, with different settings than used by ''make.conf''.  Apache is a good candidate, since it is a primary application in the LAMP stack.

An optimized version using gcc with highest optimizations:

<code>mkdir -p /etc/portage/env/www-servers</code>

Edit ''apache'' file in that directory and add this:

<code>CFLAGS="-O3 -pipe -march=native"
CXXFLAGS="${CFLAGS}"</code>