To provide user specified locations to add to the package search path.
A tcl list of directory paths (unix-style paths using forward slashes on Windows). e.g:
set TCLLIBPATH [list /opt/tcl/site-lib /users/pat/working]
PT 20-Jul-2004: I like to keep all my local packages separate from the ActiveTcl installation that I use as a base. So I install all additional packages to a site-lib directory and then set TCLLIBPATH to this directory path. With this in place a [package require XYZ] command will search ActiveTcl and my site-lib directory for the most recent version of XYZ.
D. McC 08-Nov-2004: Well ... what about this?
[[email protected] david]% puts $::env(HOME)
[[email protected] david]% puts $::env(TCLLIBPATH)
can't read "::env(TCLLIBPATH)": no such variable
This happens on my Mandrake linux 10.0 system, running Tcl 8.4 from the tcl-8.4.5-3mdk RPM package. Why no TCLLIBPATH, I wonder?
RS: Because nobody has set it? :-) Normally it's best to use as few env variables as possible - it should only be used to override some default behavior, which for finding libs is:
[file dir [info nameofexe]]/../lib
and similar variations.
LV David, environmental variables are ones that someone external to Tcl set. In many cases, they are set by a user. In a few cases, a shell command or some other utility (such as Modules for instance), may set the environment variables. So many times, one won't find them set. This is different than magic names like the $argc variable, etc.
I download a package onto my machine. The package has a README, a demo directory, a lib directory, etc. Within the lib directory I see 3 sub-directories, and within the sub-directories are the pkgIndex.tcl file, etc.
So the basic layout is:
Installation directory/ README.txt demos/ lib/ package1/ pkgIndex.tcl package2/ pkgIndex.tcl package3/ pkgIndex.tcl src/ tests/
So, what path(s) go into TCLLIBPATH? the path to the lib/ , or each of the individual packages?
PT: the lib directory.
LV PT, thank you for the answer. I tried using that, and ran into my long time nemesis - Windows folders with spaces in the names. So eventually, when I have time, I need to change to using file join to set the TCLLIBPATH rather than just hard coding the path, so that it has some chance of working.
msubbareddy - 2010-08-03 14:27:14
ls -l [list [file dirname [info library]]]
LGT Example on Windows with Git version 1.7.10-preview20120409
I ran git, then do 'cd' to be in HOME directory and then add file .bashrc with these lines :
$ cd $ cat .bashrc TCLLIBPATH=" . C:/Tcl/lib" export TCLLIBPATH $
Then at the next start of git, you will be able to use library packages from external (to git) Tcl installation (for instance Activestate Tcl).
Space character seems to be required at the beginning of TCLLIBPATH value : you can try the following lines on command line to experience it
$ unset TCLLIBPATH $ TCLLIBPATH=". C:/Tcl/lib" $ export TCLLIBPATH $ tclsh % package require Expect can't find package Expect % exit $ TCLLIBPATH=" . C:/Tcl/lib " $ export TCLLIBPATH $ tclsh % package require Expect 5.43.2 % exit $