Re: [Plplot-devel] tk driver

[Maurice L. <mj...@ga...>]

Alan W. Irwin writes:
 > On Mon, 1 Jul 2002, Maurice LeBrun wrote:
 > 
 > > Alan W. Irwin writes:
 > >  > On Mon, 1 Jul 2002, Vince Darley wrote:
 > >  >
 > >  > > PL_LIBRARY is the environment variable you can set (see tclAPI.c:
 > >  > >     static char initScript[] =
 > >  > >     "tcl_findLibrary plplot 5.1 \"\" plplot.tcl PL_LIBRARY pllibrary";
 > >  > > ).  Alternatively the 'pllibrary' Tcl variable can be set.
 > >  > >
 > >  >
 > >  > OK.
 > >  >
 > >  > setenv PL_LIBRARY .
 > >  >
 > >  > made everything work fine in plplot/tmp.  You will probably have to set that
 > >  > environment variable to something else for the installed version to work on
 > >  > Linux if you use a non-standard prefix.
 > >
 > > I don't like this at all.  Why isn't the current directory being searched?
 > 
 > I agree it is slightly inconvenient for users to set an environment variable
 > so this should ultimately be fixed.
 > 
 > What specifically do you suggest?  I was tempted to put a "." in the list
 > that Vince mentioned above, but I wasn't sure that was the right syntax to
 > use or even if tcl experts such as yourself really did want the local
 > directory always searched for this file or if so, in what order? For
 > example, there might be security implications in always automatically
 > searching the current directory first (or at all) since it is a very similar
 > situation to putting "." in your path.  Anyhow, I would appreciate you and
 > Vince thinking about all this and making the final decision.

Setting PL_LIBRARY is the best solution but I think "." should be searched
last, as a last-ditch effort to find plplot.tcl.  Just so that you don't ever
have to set PL_LIBRARY if all you're doing is building/testing.

-- 
Maurice LeBrun    mj...@ga...
Research Organization for Information Science and Technology of Japan (RIST)