Re: [Plplot-devel] Tcl example 19

[Andrew R. <and...@us...>]

On Wed, May 12, 2010 at 11:22:20AM -0500, Geoffrey Furnish wrote:
> Alan W. Irwin writes:
>  > Hi Geoffrey:
>  > 
>  > Your recent revision (I am using revision 10991) to make a plstransform
>  > wrapper to Tcl builds okay, but actual use of plstransform for example 19
>  > does not work for me.  I get
>  > 
>  > Unable to evaluate Tcl-side coordinate transform.
>  > 
>  > repeated 13557 times in examples/x19t_psc.txt, the file that captures stdout
>  > for the tcl version of example 19.  That message is apparently coming
>  > from Tcl_transform defined in bindings/tcl/tclAPI.c.
>  > 
>  > I am running the development version of Tcl-8.4 (package tcl8.4-dev version
>  > 8.4.19-2) for Debian Lenny.  The relevant lines from cmake output
>  > are
>  > 
>  > -- TCL_TCLSH = /usr/bin/tclsh
>  > -- TCL_INCLUDE_PATH = /usr/include/tcl8.4
>  > -- TCL_LIBRARY = /usr/lib/libtcl8.4.so
>  > 
>  > If you try Tcl-8.4 do you get the same error?
> 
> BTW, taking a cue from the wiki, I added some options on the cmake line like
> this: 
> 
> % cmake -DCMAKE_INSTALL_PREFIX=$HOME/devel/8.4/prefix -DCMAKE_INCLUDE_PATH=$HOME/devel/8.4/prefix/include -DCMAKE_LIBRARY_PATH=$HOME/devel/8.4/prefix/lib ..
> ...
> -- Looking for include paths and libraries for Tcl/Tk
> -- Found Tclsh: /home/furnish/devel/8.4/prefix/bin/tclsh
> -- Found TCL: /usr/lib64/libtcl.so
> -- Found TCLTK: /usr/lib64/libtcl.so
> -- Found TK: /usr/lib64/libtk.so
> -- Looking for include paths and libraries for Tcl/Tk - found
> -- Looking for tclsh
> -- Looking for tclsh - found
> -- TCL_TCLSH = /home/furnish/devel/8.4/prefix/bin/tclsh
> -- TCL_INCLUDE_PATH = /home/furnish/devel/8.4/prefix/include
> -- TCL_LIBRARY = /usr/lib64/libtcl.so
> -- Itcl not available or not compatible with current Tcl shell
> -- TK_INCLUDE_PATH = /home/furnish/devel/8.4/prefix/include;/usr/include
> -- TK_LIBRARY = /usr/lib64/libtk.so;/usr/lib64/libSM.so;/usr/lib64/libICE.so;/usr/lib64/libX11.so;/usr/lib64/libXext.so
> 
> But, it still picks up Tcl/Tk libs from /usr/lib64, even though the ones we
> need are right there in the named library dir:
> 
> % ls $HOME/devel/8.4/prefix/lib
> libtcl8.4.so     libtk8.4.so     tcl8.4        tk8.4
> libtclstub8.4.a  libtkstub8.4.a  tclConfig.sh  tkConfig.sh

The handling of multiple versions of software is something I really 
dislike about the current cmake Find* scripts. I'd really rather it
was intelligent. Once tclsh has been found cmake could easily do a 
tcl version check and only search for versions which matched that. 
I've had lots of problems when using tcl8.4 on a system with tcl8.5
also installed. 

Andrew