It is not clear, after reading Critcl pages, exactly what files have to be installed on a Windows machine to use Critcl.  Does one have to install the critcl source code and then some other piece(s)?

''June 2002'' - Yes, you need critcl installed as a normal Tcl package (i.e. so "package require critcl" works in tclsh or tclkit) and you need to set things up so "gcc" works.  What I do is install the mingw system, and set up the PATH so "gcc" works from the command line.  That's it.  -jcw
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[Paolo Noli]:
A little question: How to call a tcl commands from inside a c funcion declared with the statement "ccode"?
(I need this to implement a callback procedure.. but I think this can be an interesting tip for others people. :)

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'''Instructions for installing critcl in an existing "traditional" (i.e. non-starkit) Tcl installation'''
   * Critcl is supplied as a Starkit; but perhaps you would like to use it with a traditional Tcl distribution, e.g to use your collection of extensions
   * these instructions are console commands for a Linux/Unix system.  Please adapt for other platforms.
   * download the tclkit binary for your platform, and the starkits critcl.kit, and sdx.kit
   * follow the instructions for installing tclkit (you can remove it at the end if you wish)
   * check that tclkit and critcl.kit work correctly: run the command
  tclkit critcl.kit test-critcl.tcl
   * (where tclkit is in your command path and critcl.kit, test-critcl.tcl are in your current directory; the file test-critcl.tcl is listed below)
   * you should see the console output "three times 123 is 369"
   * now use sdx.kit to unpack critcl.kit: run the command
  tclkit sdx.kit critcl.kit
   * (where tclkit is in your command path and sdx.kit, critcl.kit are in your current directory)
   * a directory critcl.vfs will be created that holds the contents of critcl.kit: cd to this directory
  cd critcl.vfs/libs
   * ensure that you are the root user and that the folders and their contents have appropriate ownership
   * copy the folders in this directory to the lib directory of your Tcl installation
  cp -a * ''/path/to/tcl''/lib
   * now test this installation of Critcl:
  tclsh test-critcl.tcl
   * as before, you should see the console output "three times 123 is 369"
   * if this is successful, you can now use Critcl from your existing Tcl installation, and you no longer need the tclkit or starkit files to use Critcl

The file test-critcl.tcl:
  package require critcl

  critcl::cproc triple {int i} int {
     return i * 3;    /* this is C code */
  }
  puts "three times 123 is [triple 123]"

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[Category Critcl]