SUMMARY: SUMMARY: Loading perl modules bassed on Solaris uname

From: scotrn (scotrn@cox.net)
Date: Thu May 16 2002 - 09:30:54 EDT


And the winner is 'BEGIN' thanks for the feedback.
This code will add a search path based on OS Rev.
BEGIN {
   use POSIX qw(uname);
   my ($uname_s, $uname_r) = (POSIX::uname())[0,2];
   unshift(@INC, "/var/opt/modules/$uname_s/$uname_r" );
}

If you wish to follow the rest of this problem I have been asked to
take it off this list so I am now posting to beginners@perl.org
        Thread : DynaLoader and lib problems.

The above code works unless your module uses DynaLoader to load a
sharred obj. For some reason it isn't searching
$dir/$archname/auto as documented in `perldoc lib`

Module I am using is Solaris::Kstat

Scot

 

On Wed, 2002-05-15 at 09:53, scotrn wrote:
> Thanks to those who responded.
>
> There are a few discussons on the net about this. Apparently the use
> statements are processed before ANY other perl code so...
>
> use lib $path is equal to use lib "NULL".
> You cannot use a variable yet because perl has not parsed that bit of
> code that defines $path.
>
> The only way I am able to push a dynamic directory onto the INC array is
> by wrapping perl in a shell script setting LD_LIBRARY_PATH or
> by adding a bit of ugly code. Still can't seem to get DynaLoader to look
> in a different directory so I created a sun4-solaris/auto directory under
> each 5.6,5.7 amd 5.8 directory to hold my .so files
>
> use strict;
> use POSIX qw(uname);
> my ($uname_s, $uname_r) = (POSIX::uname())[0,2];
>
> if (($uname_s eq "SunOS") && ($uname_r eq 5.6)) {
> use lib qw(/var/opt/modules/SunOS/5.6);
> } elsif (($uname_s eq "SunOS") && ($uname_r eq 5.7)) {
> use lib qw(/var/opt/modules/SunOS/5.7);
> } elsif (($uname_s eq "SunOS") && ($uname_r eq 5.8)) {
> use lib qw(/var/opt/modules/SunOS/5.8);
> } else {
> die("$0 is only supported on Solaris 2.6, 2.7 & 2.8 \n");
> }
>
> Scot
>
> On Tue, 2002-05-14 at 16:06, scotrn wrote:
> > Hi;
> >
> > I was wondering if any of you have tried to dynamicly load
> > a module from a directory based on the rev of OS?
> >
> > In other words....
> > my ($uname_s, $uname_r) = split('\s',`uname -sr`);
> >
> > use lib "/share/local/modules/$uname_s"."/"."$uname_r";
> >
> > This seems to work but modules which use DynaLoader to load shared
> > objects it's falling back to the original @INC and not looking in
> > my lib path.
> >
> > Trying to support an NFS share which has multiple versions of compuled
> > modules bassed on OS Rev.
> >
> > Thanks
> > Scot
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