Purpose: Discuss what it takes to create a Tcl extension that can
be used by others


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   * See the Ajuba Solutions team's example extension ftp://ftp.scriptics.com/pub/tcl/examples/tea/
   * Read the '''T'''cl '''E'''xtension '''A'''rchitecture document [http://dev.scriptics.com/doc/tea/]
   * Determine whether extension can and will be cross platform
      * Is this relevant to your extension?
      * Are you interested in supporting cross platform?
      * What needs to be done?
   * Decide whether you want a script library extension versus compiled  (or mixed) library extension.
   * If script only, what are the core issues to consider?
      * Portable code - see the Ajuba Solutions style guide
      * What installation aids do you provide?  Options include:
         * Nothing - let the user figure it out
         * Text describing what to do
         * Tcl script to assist in configuration / installation
         * configure / makefile to assist in configuration
      * What documentation do you supply?  Options include:
         * None - let the users read the source *
         * Plain text - everyone has an editor these days
         * HTML - everyone has a browser these days
         * Man pages - it's what everyone considers
         * XML - it's the coming thing
         * Other formats (TeX, PostScript, PDF, WinHelp, etc.)
      * What additional issues can be considered?
   * Tools for writing extensions: [SWIG], mktclapp [http://www.hwaci.com/sw/mktclapp/]
   * the so-called RTFS system

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LV: What is RTFS?

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'''[Building Tcl DLL's for Windows]'''