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 1.3.27 or later; MySQL
  14 4.0.13 or later; PHP 4.3.2 or later. The installation at
  15 wikipedia.org also uses PHP Accelerator 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 (only if you now have gcc 2.96)
  66   mysql-4.0.13.tar.gz (or 3.23.57 should work)
  67   libiconv-1.8.tar.gz
  68   apache_1.3.27.tar.gz
  69   php-4.3.2.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 7.x 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, or has a more recent gcc 3.x,
  80   you can skip this step.
  81
  82 2. Install MySQL source; add "mysql" user and group. Make sure the
  83   directory into which you installed gcc 2.95 appears before the
  84   directory of gcc 2.96 in your path.  Configure with:
  85
  86   FLAGS="-O3 -mcpu=i686" CXX=gcc CXXFLAGS="-O3 -mcpu=i686 -felide-constructors -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local/mysql --enable-assembler --with-mysqld-ldflags=-all-static --disable-shared --with-extra-charset=complex
  87
  88   Edit the file myisam/ftdefs.h, changing the define for minimum word
  89   length for fulltext indexing: #define MIN_WORD_LEN 2.  Update
  90   $wgDBminWordLen in LocalSettings.php to reflect this.  Build and
  91   install according to instructions.  Make root user as recommended;
  92   the root password will be required for the wiki installation script.
  93
  94 3. Unpack the phase3.zip source distribution, or check out the "phase3"
  95   module from CVS. Copy LocalSettings.sample to LocalSettings.php,
  96   AdminSettings.sample to AdminSettings.php, and customize them for
  97   things like local paths and passwords.  If desired, update
  98   FulltextStoplist.php from the MySQL sources if you have customized
  99   MySQL's stop list.
 100
 101   If you are running anything other than Wikipedia itself you'll want
 102   to make a lot of changes to the LanguageXX.php files so it talks about
 103   _your_ site and _your_ license. :)
 104
 105 4. Optionally, install libiconv (http://www.gnu.org/software/libiconv/).
 106   This will be used by some language packages for converting
 107   native-charset URLs to and from UTF-8. If you're running an
 108   English-only wiki, this probably won't be necessary. (Most Linux
 109   distributions should come with libiconv anyway, but check for
 110   a separate 'dev' package if on RedHat.)
 111
 112 5. Unpack Apache distribution and begin configuring, but don't finish
 113   build yet. Configure with something like:
 114
 115    OPTIM='-O2 -mcpu=i686' ./configure --with-layout=Apache
 116
 117 6. If you'll want to use Apache's mod_rewrite to make page-viewing URLs
 118   look like static links (as wikipedia.org does), install the included
 119   patch "apache-ampersand.diff" which is needed to support page titles
 120   with ampersands in them:
 121
 122    patch -p0 < /path/to/maintenance/apache-ampersand.diff
 123
 124 7. Unpack and configure PHP. Configure with something like:
 125
 126   ./configure --enable-apc --enable-shmop --with-zlib --with-zlib-dir=/usr/lib --with-mysql=/usr/local/mysql --with-iconv=/usr/local/lib --with-apache=/home/lee/src/apache_1.3.26
 127
 128 Or for Apache 2.0 module:
 129   ./configure --enable-shmop --with-zlib --with-zlib-dir=/usr/lib --with-mysql=/usr/local/mysql --with-iconv --with-apxs2filter=/usr/local/apache/bin/apxs
 130
 131   (using your own local paths, of course). Build and install as
 132   instructed. Set "register_globals" on in the config file, and
 133   "warnings" to
 134
 135 8. Finish building Apache. Configure with something like:
 136
 137   OPTIM='-O2 -mcpu=i686' ./configure --with-layout=Apache --enable-module=rewrite --enable-module=mmap-static --enable-module=headers --enable-module=expires --activate-module=src/modules/php4/libphp4.a
 138
 139   Update httpd.conf as needed for your site.  For example:
 140
 141   <IfModule mod_php4.c>
 142     AddType application/x-httpd-php .php .php4 .phtml
 143     AddType application/x-httpd-php-source .phps
 144   </IfModule>
 145   <IfModule mod_php4.c>
 146     php_admin_flag engine off
 147   </IfModule>
 148   <Directory "DIRECTORY_OF_WIKI_SCRIPTS">
 149     <IfModule mod_php4.c>
 150       php_admin_flag engine on
 151     </IfModule>
 152   </Directory>
 153   RewriteEngine On
 154   RewriteMap ampescape int:ampescape
 155   RewriteRule ^/wiki/(.*)$ /wiki.phtml?title=${ampescape:$1} [L]
 156
 157   It is *seriously* recommended that you configure the webserver
 158   to disable running of PHP scripts except in the script directories
 159   (the "php_admin_flag engine off/on" directives above) to prevent
 160   the uploading and running of malicious scripts.
 161
 162 9. Optionally, install APC or another PHP cache plug-in, following
 163   standard instructions for installing as a Zend extension.
 164
 165 10. If using embedded TeX support, be sure TeX and ImageMagick are
 166   installed (they are common on most Linux distros and freely
 167   downloadable). Also get and install OCaml according to its
 168   instructions.
 169
 170   You'll need to compile the texvc helper script; enter the math
 171   subdirectory of the source tree and run "make".
 172
 173   If you want embedded TeX support, enable it by setting
 174
 175    $wgUseTex = true;
 176
 177   in LocalSettings.php
 178
 179 11. You should now be able to run the install.php script. Use PHP in
 180   command-line mode, i.e., type "php install.php". Should be run as
 181   root, or as a user or group able to create files and directories
 182   in the installation tree.
 183
 184 12. If you have Java installed and running, install the "ant" package
 185   from Apache (http://ant.apache.org/) and run ant in the testsuite
 186   directory to build the tests. Copy wikitest.prefs.sample to
 187   wikitest.prefs, and edit to reflect your local settings.  Then
 188   "./run WikiSuite -o -b" will run the whole test suite and report.
 189
 190 ----
 191
 192 Don't forget that this is pre-release software under development!
 193 Chances are good there's a crucial step that hasn't made it
 194 into the documentation. You should probably sign up for the
 195 Wikipedia developers' mailing list; you can ask for help (please
 196 provide enough information to work with, and preferably be aware
 197 of what you're doing!) and keep track of major changes to the
 198 software, including performance improvements and security patches.
 199
 200 http://mail.wikipedia.org/mailman/listinfo/wikitech-l
 201