[winGRASS] libG11

[Malcolm Blue]

> -----Original Message-----
> From: Glynn Clements [mailto:glynn.clements at virgin.net]

>
> Markus Neteler wrote:
>
> > for amusement I want to compile NVIZ on Cygwin. However, the
> > precompiled xtcltk8.0.5 package within the wingrass/ directory
> > on the server (built by Andreas Lange) is not compliant with
> > libG11.dll. It was compiled against the former libX11.dll.
> >
> > Can anyone give me a hint how to compile tcl/tk using the new
> > libG11.dll?
>
> Don't even think about it.
>
> libW11 is a *partial* implementation of Xlib, intended for building
> rxvt. AFAIK, libG11 is libW11 plus any modifications which were
> necessary to get XDRIVER working.
>
> I strongly suspect that Tk will require a substantially more complete
> implementation than that provided by libG11.

Actually, I did think about it too.  Back in March I had hacked the source
file from the Cygwin version of tcltk to compile and run tcltkgrass.  At the
same time, Andreas had compiled the standard tcl/tk distribution, so we went
with that.  I had tested compiling tcl/tk against Xlib at that time and
found a number of problems.  Version 8.0 was closer than version 8.3,
though.

TCL version 8.0 compiles OK.  TK needs a number of changes since that need
to interface to X. But many of these can be found in the tcl/tk source (for
compiling on windows).

The scriptics tcl/tk web pages say that they are working on getting it to
compile with gcc (currently the windows version compiles with MS VC++).

There are some options:
1) Fix standard tcl/tk (Unix compile) to compile with libW11.
2) Wait for tcl/tk Windows version to be ported to gcc and use this.
3) Fix the cygwin source patches to compile properly and run within cygwin
(currently they have a bad mix which doesn't compile properly with the
cygwin dll - they use mingw ).
4) Check out some of the previous patches for tcl/tk cygwin distribution.

I suggest that we finish debugging libW11 for basic grass, then look at
these options some more.  (Although I revisited this a bit on the weekend
too :) ).  In the meantime, we should find out how close the tcl/tk port to
gcc is.


Malcolm




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