[[user-comments:open-ils:evergreenv1:server_installation_prerequisites|User Comments]]

There are a number of software packages the OpenILS depends on.  Below is a short list.  Continue on in this section for a more detailed discussion of the installing some of the more complex prerequisites.  In most cases, we try to keep prerequisite installations as simple as possible.  Aficionados may wish to configure prerequisites differently.

   - libxml2
   - libxslt
   - memcached
   - yaz-2.0.x
   - aspell + dictionary (e.g. aspell-en)
   - Judy libraries
   - GD Graphics Library
   - Apache 2.0.x
   - mod_perl2
   - PostgreSQL
   - A Bundle of Perl Modules
      - libwww-perl 
      - Error
      - XML::LibXML
      - XML::LibXSLT
      - Net::Server::PreFork
      - Cache::Memcached
      - Class::DBI
      - Class::DBI::AbstractSearch
      - Template
      - DBD::Pg
      - Net::Z3950
      - MARC::Record (do not instll MARC::File:XML, a custom one is bundled with OpenILS)
      - MARC::Charset
      - Text::Aspell
      - CGI (must be CGI-3.10 or similar to work with latest mod_perl2)
      - DateTime::TimeZone
      - DateTime
      - DateTime::Format::ISO8601
      - Unix::Syslog
      - GD::Graph3d
      - UNIVERSAL::require