[R] Telling tcltk where tcl is?

[Faheem Mitha]

On 24 Mar 2001, Peter Dalgaard BSA wrote:

> Bjørn-Helge Mevik <bhm at math.uio.no> writes:
> 
> > The installation of R I'm using (R 1.2.0 on Redhat Linux
> > (R-base-1.2.0-2.i386.rpm)) apparently expects to find tcl in
> > ./share/tcl8.0, ./share/tcl8.0 or /usr/local/share/tcl8.0:
> > 
> > > library (tcltk)
> > Error in firstlib(which.lib.loc, package) : 
> > 	Can't find a usable init.tcl in the following directories: 
> >     ./share/tcl8.0 ./share/tcl8.0 /usr/local/share/tcl8.0
> > 
> > However, tcl is installed in /usr/lib/tcl8.0 on my machine.  Is there a way
> > to tell R or tcltk where tcl is located?
> > 
> > (I'm sorry if this is a faq -- I've gone through all documentation I've
> > found, but I still couldn't find out about it.)
> 
> It isn't. It's not supposed to happen...
> 
> Does your .rpm match your RedHat version? 
> 
> You might consider getting a recent version off of CRAN or compiling
> from sources. It might also work to set the environment variable
> TCL_LIBRARY to the proper location on your system.
> 
> In either case it would be good for us to know the origin of your
> setup in case anyone else gets in trouble.

I have a problem as well, but my error message is different. I am using
SuSE 6.2, and R 1.2.1. I seem to have two versions of tcl installed, 7.6
and 8.0. I get the message 

> library(tcltk)
Error in firstlib(which.lib.loc, package) : 
	Tcl/Tk support is not available on this system
Error in library(tcltk) : .First.lib failed
>

I added TCL_LIBRARY=/usr/lib/tcl7.6/ and then /usr/lib/tcl8.0/ instead to
.Renviron, but it doesn't seem to make any difference.

SuSE tends to be fairly idiosyncratic about naming things, unfortunately.
Does R expect some things in tcl/tk to be named a certain way? If so,
what? I don't know if this is relevant, but the TCl shell script is called
tclsh8.0 (for the newer version) and tclsh7.6 (for the older version).

Thanks in advance.
                                    Sincerely, Faheem Mitha.

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