Michael Barton wrote: > There are tcl and tk directories in in %GISBASE/lib, along with > libtcl8.4.dylib and libtk8.4.dylib. There are also some tcltk *.h > files in $GISBASE/include. AFAICT, these are complete unused at least > on my Mac. I can throw them away with no effect, regardless of whether > I switch to wish 8.5 aqua or 8.4 x11. Are these used by any other > system? While my aqua version of TclTk 8.5 is visible to my system, > 8.4 for x11 is hidden away in /usr/local/tcltk and not in my path--in > GRASS or outside of it. So I don't see how GRASS can find any files in > that directory.
The Tcl/Tk lib directories are normally hard-coded into the libraries. However, this can be overriden by the TCL_LIBRARY and TK_LIBRARY environment variables. Anything which uses the libraries needs those directories, but there's a good chance that a bundled wish will actually use the system's directories rather than the bundled directories (unless the startup is explictly setting TCL_LIBRARY and TK_LIBRARY). > In sum, the GRASS TclTk GUI seems to ONLY need wish of one flavor or > another to run. So all that is needed is to include all 3 wish > versions, default to one and have a Mac script that will let the user > change to another one if desired. This is easy for all of GRASS except > NVIZ. v.digit and the form library used by e.g. d.what.vect have the same issues as NVIZ. > NVIZ seems to use its own version of wish that must be coded into a C > module somewhere. I certainly can't find it. But must be finding wish > somewhere. If that path could be redirected to whatever GRASS_WISH is, > then both GRASS and NVIZ could be in sync. The only fly in this > ointment would be if Togl must have the same version of wish available > (somewhere) that it was compiled against AND needs other TclTk files > in addition to wish. NVIZ (etc) don't need (and can't use) wish. wish is just a trivial wrapper around the Tcl/Tk libraries; you should find it's source code as tkAppInit.c in the tk lib directory. All of the Tcl/Tk functionality is in the libraries. You will see similar code in visualization/nviz/src/nvizAppInit.c; similarly, in lib/form/form.c and vector/v.digit/main.c. A hybrid Tcl/Tk+C application is essentially a custom version of wish, which adds some new commands during the startup phase. So, the "wish" that NVIZ uses is $GISBASE/etc/nviz2.2/nviz. It can't use a standard wish, as that won't have any of the NVIZ-specific commands which NVIZ' Tcl/Tk scripts use. -- Glynn Clements <[EMAIL PROTECTED]> _______________________________________________ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev
