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 Installing PEAR modules necessary on RHEL 3 (or clones)
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*#* first change to the framework directory and get the framework PEAR packages installed
::

 cd /var/www/html/horde/framework/
 php install-packages.php

*#*  You will need to download these two packages to complete the pear installation

::

 wget http://dag.wieers.com/packages/php-sqlite/php-sqlite-1.0.2-1.rhel3.dag.i386.rpm
 wget http://dag.wieers.com/packages/sqlite/sqlite-2.8.16-1.1.el3.rf.i386.rpm
 rpm -ivh sqlite-2.8.16-1.1.el3.rf.i386.rpm
 rpm -ivh php-sqlite-1.0.2-1.rhel3.dag.i386.rpm

*#*  new as of 3/19/2007 - was painful to figure this out. The first issue is to get the structures graph dependency
*#*  the second issue is to make a copy of /usr/bin/pear since updating pear seems to delete it

::

 pear install structures_graph
 cp /usr/bin/pear /opt
 pear upgrade pear
 cp /opt/pear /usr/bin

*#* needed for Horde base
::

 pear install Log
 pear install Mail_Mime
 pear upgrade DB
 pear install Date
 pear install Auth_SASL
 pear install File
 pear install Net_URL

*#* needed for IMP
::

 pear install HTTP_Request

*#* needed for Wicked
::

 pear install Text_Wiki

*#* needed for Ingo
::

 pear install Net_Sieve
 pear install Net_Socket

*#* needed for weather portal block in Horde
::

 pear install cache
 pear install net_dime
 pear install soap
 pear install xml_util
 pear install xml_parser
 pear install serializer
 pear install xml_serializer
 pear install services_weather

*#* needed for passwd smbldap driver
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 pear install Crypt_CHAP

*#* and lastly...
::

 pear upgrade-all

If for some reason PEAR breaks...

then I just 
::

 cd /usr/share
 mv pear pear.bak
 rpm -e php-mysql php-imap php-ldap

*#* for RHEL 3 only
::

 up2date php-mysql php-imap php-ldap php

*#* for RHEL clones
::

 yum install php-mysql php-imap php-ldap php

and then back to the top and reinstall starting with
::

 cd /var/www/html/horde/framework
 php install-packages.php