modifying @INC other than use lib?

Bukowski has asked for the wisdom of the Perl Monks concerning the following question:

Hi, I'm on MacOS X and I have a couple of machines here, one Powerbook and one G5 desktop. Perl (apparently reporting the same version for both) has different @INC for each, and this is causing issues for gd-pm581 (GD.pm) that I have installed via fink (as I can never get it to compile cleanly out of CPAN)

ashtaroth:~ dswan$ perl -e "print (@INC)"
/sw/lib/perl5/5.8.1/darwin-thread-multi-2level/sw/lib/perl5/5.8.1/sw/l
+ib/perl5/sw/lib/perl5/darwin/System/Library/Perl/5.8.1/darwin-thread-
+multi-2level/System/Library/Perl/5.8.1/Library/Perl/5.8.1/darwin-thre
+ad-multi-2level/Library/Perl/5.8.1/Library/Perl/Network/Library/Perl/
+5.8.1/darwin-thread-multi-2level/Network/Library/Perl/5.8.1/Network/L
+ibrary/Perl.
ashtaroth:~ dswan$
[download]

and

Embley-m6:/System/Library/Perl/5.8.1/darwin-thread-multi-2level dswan$
+ perl -e "print (@INC)"
/System/Library/Perl/5.8.1/darwin-thread-multi-2level/System/Library/P
+erl/5.8.1/Library/Perl/5.8.1/darwin-thread-multi-2level/Library/Perl/
+5.8.1/Library/Perl/Network/Library/Perl/5.8.1/darwin-thread-multi-2le
+vel/Network/Library/Perl/5.8.1/Network/Library/Perl.Embley-m6:/System
+/Library/Perl/5.8.1/darwin-thread-multi-2level dswan$
[download]

The GD install has gone into /sw/lib/perl5/5.8.1/darwin-thread-multi-2level on both machines.

I know I can push paths into @INC with "use lib" but is there a way I can just get Perl to accept a new @INC permanently without major fiddling?

cheers,

Dan

Bukowski - aka Dan (dan@scot1and.net)
"Coffee for the mind, Pizza for the body, Sushi for the soul" -Userfriendly

Comment on modifying @INC other than use lib? Select or Download Code

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Re: modifying @INC other than use lib? by bsdz (Friar) on Apr 18, 2005 at 11:57 UTC
you can either set the environment variable PERL5LIB or edit your Config.pm	[reply]
Re^2: modifying @INC other than use lib? by merlyn (Sage) on Apr 18, 2005 at 12:46 UTC
Never edit your `Config.pm`: that's meant to be a runtime reference to a number of settings that your Perl was compiled with. In particular, the initial value for `@INC` doesn't even come from there: it comes from a hardwired path compiled into the binary. Otherwise, how could Perl find the `Config.pm` file? Psychic powers? -- Randal L. Schwartz, Perl hacker Be sure to read my standard disclaimer if this is a reply.	[reply]
Re^3: modifying @INC other than use lib? by Bukowski (Deacon) on Apr 18, 2005 at 13:39 UTC
Thanks Randal, I didn't get around to modifying it anyway before I hit on a lower tech solution: `cd /sw/lib/perl5/5.8.1/darwin-thread-multi-2level/ sudo cp -R GD GD.pm /System/Library/Perl/5.8.1/darwin-thread-multi-2le +vel/ sudo cp -R auto/GD/ /System/Library/Perl/5.8.1/darwin-thread-multi-2l +evel/auto/` [download] I did try this before but failed to copy across the auto/ and it was complaining about not being able to find the loadable object. Also for the record I did also try this with symlinks and it didn't appear to work :/ Dan Bukowski - aka Dan (dcs@black.hole-in-the.net) "Coffee for the mind, Pizza for the body, Sushi for the soul" -Userfriendly	[reply] [d/l]
Re^3: modifying @INC other than use lib? by jacques (Priest) on Apr 18, 2005 at 18:14 UTC
Otherwise, how could Perl find the Config.pm file? Psychic powers? I think there's a Perl6 RFC on that one. ;)	[reply]
Re^3: modifying @INC other than use lib? by bsdz (Friar) on Apr 19, 2005 at 08:54 UTC
Editing your Config.pm can be your only option sometimes; especially when relocating your Perl binary/library tree, and switching between using nmake or dmake in a Windows environment.	[reply]
Re^4: modifying @INC other than use lib? by merlyn (Sage) on Apr 19, 2005 at 13:56 UTC
Re^5: modifying @INC other than use lib? by bsdz (Friar) on Apr 19, 2005 at 15:08 UTC
Some notes below your chosen depth have not been shown here
Re^2: modifying @INC other than use lib? by Bukowski (Deacon) on Apr 18, 2005 at 12:43 UTC
This is why I was wondering if there was something more MacOS X specific as the only "Config.pm" I can find on the system is the config for Fink.. not Perl... update: Scratch that - "find" finds what "finder" cannot on MacOS X - I am a Linux user at heart, this OS X stuff is still a bit alien to me :) Bukowski - aka Dan (dcs@black.hole-in-the.net) "Coffee for the mind, Pizza for the body, Sushi for the soul" -Userfriendly	[reply]
Re: modifying @INC other than use lib? by Fletch (Bishop) on Apr 18, 2005 at 12:19 UTC
Looks like you've sourced Fink's `/sw/bin/init.sh` script in the first case, as that would alter `PERL5LIB` just that way.	[reply]
Re: modifying @INC other than use lib? by Taulmarill (Deacon) on Apr 18, 2005 at 12:08 UTC
i would also highly recomend to build your own perl, it's realy easy and works very well for me. just download, untar, cofigure.sh, make, make test, make install (the usual). i build modules via cpan-shell.	[reply]
Re: modifying @INC other than use lib? by polettix (Vicar) on Apr 18, 2005 at 17:51 UTC
The advantage of using `use lib` is that it also adds the directory specific to the architecture. Quick-and-very-dirty workarounds: Make a dummy "pragma" module which simply lists the include directories you want: `# In myInc.pm, located in standard perl lib directory package myInc; use lib /path/to/my/special/lib; 1;` [download] This only shifts the problem, but you have the advantage of a simpler inclusion and, what's better, the fact that you don't have to change anything in your scripts, only in the local myInc package: `# ... in your script use myInc; use GD; # or whatever in your local lib # ...` [download] given the fact that you're always using strict (aren't you?!?), you could put the `use lib` directly in `strict.pm`, but I've never suggested you to do that :) The first solution seems the one to go if you want to give these headless advices a try. I only hope merlyn's hammer won't be too heavy on me! Update: fixed 8-PM typo, thanks to eric256 for signaling! Flavio (perl -e "print(scalar(reverse('ti.xittelop@oivalf')))") Don't fool yourself.	[reply] [d/l] [select]
Re^2: modifying @INC other than use lib? by eric256 (Parson) on Apr 18, 2005 at 18:06 UTC
You wrote `use base` in your examples when I'm sure you meant `use lib` ___________ Eric Hodges	[reply] [d/l] [select]


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