Hi,

At long last, I have committed the patches necessary to build Insight 
using system-installed versions of Tcl, Tk, Itcl, Itk, and Iwidgets.

I have tried to support building using in-tree tcl as well, and if they 
are present, they will be used over the system-supplied one. Aside from 
all the configury hacking, the biggest difference between the older 
insight and the newer one is Itcl. We must have Itcl/Itk 3.3/Iwidgets 
4.0.1 -- these versions use TEA so we can simply "package require" them. 
We no longer link against them directly.

Unfortunately, this isn't perfect (yet). In fact, it's probably far from 
it. I've really had to hack at the startup sequence and a bunch of other 
things. I'm sure there are problems that I haven't even seen yet.

The biggest problems/issues so far:

1) Using in-tree tcl, tk, itcl, you cannot run insight from the build 
directory. Don't know why yet, it just exits with an exception from 
gdb_loc. I have not investigated. Note: This does not happen when using 
installed tcl and friends (which is the way I plan to use it from now on).

2) I have not tested cygwin a lot [and mingw at all]. I hope to 
investigate this more fully now that the initial support is in. You 
*must* use in-tree Tcl/Tk/Itcl for Cygwin, since the 3.2 package of Itcl 
that is distributed with Cygwin does not support the Tcl Extension 
Architecture.

3) Fedora 9 uses Tcl/Tk 8.5 and Itcl/Itk 3.4. There is a problem with 
the combobox package. I'm not sure what's going on here, but let's just 
say it doesn't "work". It builds, but it doesn't run. If you don't want 
to help figure out why, use the in-tree Tcl/Tk/Itcl.

4) I haven't tried the testsuite yet. [I know, that's bad. Probably very 
bad, but I'll address that in time.]

If there are any problems, send a note to this list, and I will try to 
get to it as quickly as I can. Please do not file bug reports on this 
stuff yet.

On my task list for the coming weeks:

o Get cygwin working (better?)
o Check testsuite
o Change insight CVS module to not include tcl/tk/itcl (probably add an 
"insight+tcl" module)
o Change the snapshots to post the code sans tcl. Probably put tarballs 
for the in-tree tcl, tk, itcl in case someone wants to use/download them.

Well, there it is. [Have at it, Tom!]

Keith

ChangeLog
2008-08-02  Keith Seitz  <keiths@redhat.com>

         * generic/gdbtk-cmds.c: Don't include itcl.h.
         * generic/gdbtk-hooks.c: Likewise.
         * generic/gdbtk.c: Include tcl.h and tk.h instead of itcl.h
         and itk.h.
         (gdbtk_init): Rewrite to accommodate using a system-provided
         Tcl, Tk, Itcl, Itk.
         (gdbtk_source_start_file) [!_WIN32]: Don't call error() when
         we fail to source the start file. Just dump the message to stderr.
         Throw an exception indicating the failure.
         * library/ehandler.itb (GDBEventHander::dispatch): "itcl_info" is
         deprecated: use "itcl::find objects" instead.
         * library/managedwin.itb (window_instance): Ditto.
         (restart): Ditto.
         (shutdown): Ditto.
         (_open): Ditto.
         (find): Ditto.
         * library/globalpref.itb (_build_win): Don't pass config arguments
         for libgui widgets to the constructor. Configure the widget after
         creation.
         * library/srcpref.itb (_build_win): Ditto.
         * library/main.tcl: Update Tcl, Tk, Itcl, Itk, and Iwidgets (just
         added to this loop) version requirements.
         No need to initialize Iwidgets separately.
         * plugins/Make-rules (TCLHDIR): Renamed to TCL_INCLUDES. Change
         all references.
         (TCL_BUILD_LIB_SPEC): Renamed to TCL_LIBRARY. Change all 
references.
         * plugins/acinclude.m4: Include the standard tcl.m4 instead
         of the sourceware-derived one.
         * plugins/configure.ac: Use Tcl's standard SC_* macros instead of
         the sourceware-derived CYG_AC_* macros.
         Add logic to deal with using a system-supplied Tcl/Tk.
         * plugins/configure: Regenerated.
         * plugins/Makefile.in: Regenerated.