1) Add some additional locales symlinks:

     cd /usr/lib@LIBDIRSUFFIX@/locale/
     ln -s de_DE de_DE.ISO-8859-1
     ln -s es_ES es_ES.ISO-8859-1
     ln -s fr_FR fr_FR.ISO-8859-1
     ln -s it_IT it_IT.ISO-8859-1

2) Get rpcbind to run into insecure mode:

     chmod +x /etc/rc.d/rc.rpc
     /etc/rc.d/rc.rpc start

3) Remove Slackware's lesstif and build/install the two
   dependencies, openmotif and xlt.

4) You will need a cde group on the system to run this script:
   create one with a command like

     groupadd -g 310 cde

   Don't forget to add the user that you want to run CDE to this
   group: you can use a command like

     gpasswd -a myuser cde

5) Build using this SlackBuild.

VARIOUS IMPORTANT NOTES - *MUST* READ

- The build process will install stuff into your /usr, /etc/ and /var,
  spamming everywhere, so if you have already installed CDE, you
  should remove its stuff prior to building this: this is because CDE
  devs have hardcoded building/installing thingies and we can't do
  anything about it.

- The LANG environment variable of your user *must* have one of the
  following values:

    C
    fr_FR.ISO8859-1
    de_DE.ISO8859-1
    es_ES.ISO8859-1
    it_IT.ISO8859-1

  It will be set to LANG=C by default in your
  /etc/profile.d/CDE.{sh,csh} but your enviroment could override it:
  be warned.
  You can change this default also in /etc/rc.d/rc.4 and
  /usr/dt/bin/startxsession.sh.

- When you first run CDE and try to run an application from the
  front panel, it may fail with a TT error.
  Log out and log back in and it will run without errors.

- If you prefer to run its internal login manager, add this on
  top of /etc/rc.d/rc.4, before the gdm lines

    # Regardless of the comments below, let's check for dtlogin first:
    if [ -x /usr/dt/bin/dtlogin ]; then
      export PATH="/usr/dt/bin:$PATH"
      export LANG=C
      cd /usr/dt/bin
      exec ./dtlogin
    fi

(these notes have been written originally by
notKlatuu and Christopher Turkel for the cde wiki)