INSTALL

   1 ----
   2 Installing Wikipedia Phase III Software
   3 ----
   4
   5 The Wikipedia software was developed collabortively by
   6 many people, so it's something of a hodgepodge. The
   7 main wiki software itself is written in PHP, and requires
   8 the Apache web server and MySQL database. The optional
   9 math rendering functions are written in Objective CAML,
  10 which is required to compile them. The test suite is
  11 written in Java, using several external libraries.
  12
  13 Recommended versions are: Apache 1.3.26 or later; MySQL
  14 2.23.51 or later; PHP 4.2.2 or later. The installation at
  15 wikipedia.org also uses the APC caching software, but
  16 that's entirely optional and doesn't affect anything else.
  17
  18 The math rendering functions are more complex, and will
  19 probably only work on Linux. Objective CAML (probably
  20 3.06 or later) is required to compile texvc, but produces
  21 static binaries. TeTeX and ImageMagick are required at
  22 runtime, and ImageMagick requires GhostScript. These are
  23 present in most Linux distributions.
  24
  25 ----
  26 Scripts install.php and update.php
  27 ----
  28
  29 Before installing the software, you must copy the file
  30 "LocalSettings.sample" to "LocalSettings.php", and
  31 "AdminSettings.sample" to "AdminSettings.php", and
  32 customize both of the php files to your local setup
  33 (things like installation parh, passwords, etc.) The
  34 script install.php can then be run to install the
  35 software. It must be run from the command line with
  36 PHP: that is, type "php install.php" (you may need to
  37 specify the path the php executable). You will probably
  38 need to run as root.
  39
  40 This script will copy all the necessary software over to
  41 the directories you have specified in the settings files.
  42 It will then warn you that it is about to create the
  43 database and give you the chance to exit. If you are
  44 installing the software to an existing database, you can
  45 answer "no" here and it will be left alone. The software
  46 installation will be otherwise complete. If you do choose
  47 to create a new database, you will need te root password
  48 to your MySQL installation.
  49
  50 If you are merely updating an existing installation, run
  51 "php update.php" instead of install.  This will copy all
  52 the software, and also run any dtabase updates that may
  53 be necessary. These should give appropriate warnings if
  54 there are any dangerous ones.
  55
  56 ----
  57 Building from scratch
  58 ----
  59
  60 Here are some more notes on building a system from scratch
  61 the way it was done for the Wikipedia server:
  62
  63 Downloads:
  64
  65   gcc-2.95.3.tar.gz
  66   mysql-3.23.51.tar.gz
  67   libiconv-1.8.tar.gz
  68   apache_1.3.26.tar.gz
  69   php-4.2.1.tar.gz
  70   apc-cvs.tar.gz
  71
  72 And for math support:
  73   ocaml-3.06.tar.gz
  74   (TeTeX, ImageMagick, and GhostScript come with most Linux distros)
  75
  76 1. MySQL strongly recommends using gcc 2.95 to compile MySQL.
  77   RedHat Linux comes with 2.96 by default, so you'll have to install
  78   2.95 first.  Use "../gcc*/configure --enable-shared"  If your Linux
  79   installation doesn't use gcc 2.96 you can skip this step.
  80
  81 2. Install MySQL source; add "mysql" user and group. Make sure the
  82   directory into which you installed gcc 2.95 appears before the
  83   directory of gcc 2.96 in your path.  Configure with:
  84
  85   FLAGS="-O3 -mpentiumpro" CXX=gcc CXXFLAGS="-O3 -mpentiumpro -felide-constructors -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local/mysql --enable-assembler --with-mysqld-ldflags=-all-static --disable-shared --with-extra-charset=complex
  86
  87   Edit the file myisam/ftdefs.h, changing the define for minimum word
  88   length for fulltext indexing: #define MIN_WORD_LEN 2.  Update
  89   $wgDBminWordLen in LocalSettings.php to reflect this.  Build and
  90   install according to instructions.  Make root user as recommended;
  91   the root password will be required for the wiki installation script.
  92
  93 3. Unpack the phase3.zip source distribution, or check out the "phase3"
  94   module from CVS. Copy LocalSettings.sample to LocalSettings.php,
  95   AdminSettings.sample to AdminSettings.php, and customize them for
  96   things like local paths and passwords.  If desired, update
  97   FulltextStoplist.php from the MySQL sources if you have customized
  98   MySQL's stop list.
  99
 100 4. Optionally, install libiconv (http://www.gnu.org/software/libiconv/).
 101   This will be used by some language packages for converting
 102   native-charset URLs to and from UTF-8. If you're running an
 103   English-only wiki, this won't be necessary.
 104
 105 5. Unpack Apache distribution and begin configuring, but don't finish
 106   build yet. Configure with something like:
 107
 108    OPTIM='-O2 -mpentiumpro' ./configure --with-layout=Apache
 109
 110 6. If you'll want to use Apache's mod_rewrite to make page-viewing URLs
 111   look like static links (as wikipedia.org does), install the included
 112   patch "apache-ampersand.diff" which is needed to support page titles
 113   with ampersands in them:
 114
 115    patch -p0 < /path/to/maintenance/apache-ampersand.diff
 116
 117 7. Unpack and configure PHP. Configure with something like:
 118
 119   ./configure --enable-apc --with-mysql=/usr/local/mysql --with-iconv=/usr/local/lib --with-apache=/home/lee/src/apache_1.3.26
 120
 121   (using your own local paths, of course). Build and install as
 122   instructed. Set "register_globals" on in the config file.
 123
 124 8. Finish building Apache. Configure with something like:
 125
 126   OPTIM='-O2 -mpentiumpro' ./configure --with-layout=Apache --enable-module=rewrite --activate-module=src/modules/php4/libphp4.a
 127
 128   Update httpd.conf as needed for your site.  For example:
 129
 130   <IfModule mod_php4.c>
 131     AddType application/x-httpd-php .php .php4 .phtml
 132     AddType application/x-httpd-php-source .phps
 133   </IfModule>
 134   <IfModule mod_php4.c>
 135     php_admin_flag engine off
 136   </IfModule>
 137   <Directory "DIRECTORY_OF_WIKI_SCRIPTS">
 138     <IfModule mod_php4.c>
 139       php_admin_flag engine on
 140     </IfModule>
 141   </Directory>
 142   RewriteEngine On
 143   RewriteMap ampescape int:ampescape
 144   RewriteRule ^/wiki/(.*)$ /wiki.phtml?title=${ampescape:$1} [L]
 145
 146   It is *seriously* recommended that you configure the webserver
 147   to disable running of PHP scripts except in the script directories
 148   (the "php_admin_flag engine off/on" directives above) to prevent
 149   the uploading and running of malicious scripts.
 150
 151 9. Optionally, install APC, following standard instructions for
 152   installing as a Zend extension.
 153
 154 10. If using embedded TeX support, be sure TeX and ImageMagick are
 155   installed (they are common on most Linux distros and freely
 156   downloadable). Also get and install OCaml according to its
 157   instructions.
 158
 159   You'll need to compile the texvc helper script; enter the math
 160   subdirectory of the source tree and run "make".
 161
 162   If you want embedded TeX support, enable it by setting
 163
 164    $wgUseTex = true;
 165
 166   in LocalSettings.php
 167
 168 11. You should now be able to run the install.php script. Use PHP in
 169   command-line mode, i.e., type "php install.php". Should be run as
 170   root, or as a user or group able to create files and directories
 171   in the installation tree.
 172
 173 12. If you have Java installed and running, install the "ant" package
 174   from Apache (http://ant.apache.org/) and run ant in the testsuite
 175   directory to build the tests. Copy wikitest.prefs.sample to
 176   wikitest.prefs, and edit to reflect your local settings.  Then
 177   "./run WikiSuite -o -b" will run the whole test suite and report.
 178
 179 ----
 180
 181 Don't forget that this is pre-release software under development!
 182 Chances are good there's a crucial step that hasn't made it
 183 into the documentation. You should probably sign up for the
 184 Wikipedia developers' mailing list; you can ask for help (please
 185 provide enough information to work with, and preferably be aware
 186 of what you're doing!) and keep track of major changes to the
 187 software, including performance improvements and security patches.
 188
 189 http://www.wikipedia.org/mailman/listinfo/wikitech-l
 190