Downloading and Installing tk545
on MacOS X Systems

Version 1.2

Software Info
  Screen shots
  Release notes
  JRC NRD-545 brochure

  MacOS X

Site Info

Ben Mesander tested tk545 version 1.0 on a Macintosh G3/400 laptop running MacOS X 10.1. and Tcl/Tk version 8.4 alpha 4 snapshot. He provided these instructions.

This is experimental software and probably contains defects. It remains under development. When available, newer versions of tk545 will be made available for download at this web site.

Downloading and Installing tk545 for MacOS X

  1. Install the latest binary snapshot of MacOS X TCL/TK on your machine. You can get this from

    Unfortunately the TCL interpreter built as part of the snapshot did not include support for serial devices. You'll need to pull source code to tcl from sourceforge via cvs and recompile it with project builder to add serial device support. Note that this will require you to install the OSX developer cdrom.

    The file you need to hack to fix the problem is configure. To really fix the problem you need autoconf, etc. which is a hassle, so these instructions just tell you how to hardcode the right value. The real fix will be done by the tcl team.

  2. Edit tcl/unix/configure and find the snippet:
    if { (eval echo configure:2214: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
      echo "configure: failed program was:" >&5
      cat conftest.$ac_ext >&5
      rm -fr conftest*
    add immediately after the 'fi':
  3. Build the osx project for tcl in tcl/macosx/Tcl.pbproj
  4. After the build completes, copy the file:

    You now have a tcl interpreter with serial I/O support.

  5. Remove the old .tk545rc configuration file if it exists from a previous installation.
  6. Download the gzipped Linux version of tk545, tk545-1.2.tar.gz .
  7. Unzip and untar the file.
  8. To run the application, start a new terminal and run tk545 like so:
    setenv tk545 /whereever/you/put/tk545
    or, if you're using a non-csh shell,
    export tk545=/whereever/you/put/tk545
    and then:
    /Applications/Wish\\ Shell $tk545/tk545.tcl

  9. Start tk545
  10. When prompted, enter the name of your your serial device, e.g.,


  1. See the Release notes.
  2. tk545 presumes the wish windowing shell is in your PATH.
  3. Power your NRD-545 receiver on before starting tk545 or else the program will freeze.

Copyright 2001, 2002, Bob Parnass
Page last updated 5/22/2002