Httpd RHEL Compilation
External
Internal
Overview
This is the Apache httpd compilation/installation procedure. It implies that httpd is compiled from source. If you plan to install httpd with yum, go directly to yum installation. The procedure was tested on RHEL and Mac. If you compile on Mac, make sure to follow the advice from "Compilation on Mac" section, below.
Download
Download from http://httpd.apache.org/download.cgi and optionally place in the local archive directory.
wget http://mirror.cogentco.com/pub/apache//httpd/httpd-2.2.17.tar.gz
Older releases may not be on mirrors, but they can be downloaded directly from the apache web site: http://archive.apache.org/dist/httpd.
Extract
The sources can be extracted as a non-root user.
cd src gunzip < ../archive/httpd-2.2.17.tar.gz | tar xfv -
Configure Compilation
Compilation can be configured as a non-root user.
cd httpd-2.2.17 ./configure \ --prefix /opt/httpd-2.2.17[-worker] \ --enable-so \ --enable-expires=shared \ --with-included-apr
Compilation Configuration Notes
It is a good idea to compile httpd with shared module option enabled and load them dynamically as needed. For that, the Dynamic Shared Object (DSO) capability must be enabled at compilation, with:
--enable-so
For more details on Dynamic Shared Object (DSO) capability, see Template:Httpd Modules
APR
configure may complain about not finding APR. I worked around this by using --with-included-apr in configure configuration.
SSL Compilation
If you need SSL, compile the latest OpenSSL (see [OpenSSL#Compilation]) and then
... --enable-ssl --with-ssl=/data/openssl-1.0.2/ ...
If you use SSL, when running httpd, you need to set LD_LIBRARY_PATH to point to the OpenSSL lib directory:
LD_LIBRARY_PATH="/data/openssl-1.0.2/lib:${LD_LIBRARY_PATH}"
export LD_LIBRARY_PATH
Compilation on Mac
Various Module Configuration Requirements
Cleaning configuration
The only option I discovered so far is to completely remove the source tree. I am sure others exist ... if I find them, add them here.
Configuration Examples
Example 1
Version 2.2.15
./configure --prefix=/cust/soe/opt/apache/2.2.15_without_mod_proxy
--enable-logio
--disable-proxy
--enable-rewrite
--enable-ssl
--enable-vhost-alias
--enable-headers
--enable-dav
--enable-dav-fs
--enable-modules=ssl
--with-ssl=/cust/soe/opt/openssl/1.0.0/
--with-included-apr
--enable-dav-lock
--enable-deflate
--enable-so
--with-mpm=worker
We disabled mod_proxy so we can use the version included in mod_cluster.
Example 2
We use mod_proxy:
#!/bin/bash $(dirname $0)/configure \ --prefix /data/httpd-2.2.29-worker-mpm \ --enable-so \ --with-included-apr \ --enable-expires=shared \ --with-mpm=worker \ --enable-proxy \ --enable-proxy-connect \ --enable-proxy-http \ --enable-proxy-ajp \ --enable-proxy-balancer \ --disable-cgi \ --enable-ssl \ --with-ssl=/data/openssl-1.0.2
mod_cluster Recommended Configuration
1. Apply http://anonsvn.jboss.org/repos/mod_cluster/trunk/native/mod_proxy_cluster/mod_proxy_ajp.patch (optional).
2. Configure:
./configure --prefix=apache_installation_directory \ --with-mpm=worker \ --enable-mods-shared=most \ --enable-maintainer-mode \ --with-expat=builtin \ --enable-ssl \ --enable-proxy \ --enable-proxy-http \ --enable-proxy-ajp \ --disable-proxy-balancer \ --enable-so
Compile
Can be built as a non-root user.
make
Install
Can be installed as a non-root user, as long as the user has write access to the target directory.
For more details on how to create the operational account, jump ahead to "Create the Operational Account" section and then come back here.
make install