Platform details:
Mac OS X 10.4.10
Xcode 2.4.1
PowerMac G5 
MacPorts 1.5.2

I just built xcircuit:

$ port installed xcircuit
None of the specified ports are installed.
$ sudo port install xcircuit
--->  Fetching xcircuit
--->  Attempting to fetch xcircuit-3.4.24.tgz from http://opencircuitdesign.com/xcircuit/archive/
--->  Verifying checksum(s) for xcircuit
--->  Extracting xcircuit
--->  Configuring xcircuit
--->  Building xcircuit with target all
--->  Staging xcircuit into destroot
--->  Installing xcircuit 3.4.24_0
--->  Activating xcircuit 3.4.24_0
--->  Cleaning xcircuit
$ type xcircuit
xcircuit is /opt/local/bin/xcircuit

So I tried to run it and get a seg vault from launching Wish:

$ xcircuit
/usr/bin/wish: line 2:  9130 Segmentation fault      "$(dirname $0)/../../System/Library/Frameworks/Tk.framework/Versions/8.4/Resources/Wish Shell.app/Contents/MacOS/Wish Shell" "$@"
$

This was using (I think) ActiveState Tcl 8.4.14.  So I loaded the latest ActiveState Tcl 8.4.16
and get the same result:

$ xcircuit
/usr/bin/wish: line 2:  9175 Segmentation fault      "$(dirname $0)/../../System/Library/Frameworks/Tk.framework/Versions/8.4/Resources/Wish Shell.app/Contents/MacOS/Wish Shell" "$@"

If I launch Wish from the Terminal command line with no args, it runs fine,
puts up a small window, puts out a command line prompt, and waits for input:

$ wish
% ^D
$

Any hints, tips, comments, suggestions appreciated!

#######
George B. Smith
gbjsmith@mac.com