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From: Jan Wieck <janwieck@yahoo.com>
Message-Id: <200112052144.fB5Li7e02083@saturn.jw.home>
Subject: Re: Cant load pgtclsh library into application
In-Reply-To: <19220.1006877462@sss.pgh.pa.us> from Tom Lane at "Nov 27, 2001
	11:11:02 am"
To: Tom Lane <tgl@sss.pgh.pa.us>
Date: Wed, 5 Dec 2001 16:44:07 -0500 (EST)
CC: Amit Padgaonkar <amit@nsat.co.jp>, pgsql-interfaces@postgresql.org
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Tom Lane wrote:
> "Amit Padgaonkar" <amit@nsat.co.jp> writes:
> >             I am using tcl8.3 / tk8.3  and postgreSQL 7.3 . I am not able to
> > load pgtclsh library into to my TK application for giving it backend
> > support.
>
> pgtclsh is not a library, it is a prebuilt tclsh application with the
> libpgtcl library already loaded into it.  You can load the libpgtcl
> library into your own application with the usual Tcl "load" command.
> pgaccess does it like so:
>
>    if {[info exists env(PGLIB)]} {
>         set libpgtclpath [file join $env(PGLIB) libpgtcl]
>    } else {
>         set libpgtclpath {libpgtcl}
>    }
>    load ${libpgtclpath}[info sharedlibextension]
>
>              regards, tom lane

    I  use to have a directory .../tcl8.x/lib/pgtcl where I put a
    symlink to the libpgtcl.so and the  appropriate  pgkIndex.tcl
    file.   The  pgkIndex  can  be  created  by  cd'ing into that
    directory, starting a tclsh and issuing the command

        pkg_mkIndex . ./libpgtcl.so

    Once you have that, your Tcl scripts just need to do a

        package require Pgtcl

    No need for the user to set PGLIB or even know  where  it  is
    installed.


Jan

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