Problem using -I argument with Perl

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

Replies are listed 'Best First'.
Re: Problem using -I argument with Perl by imp (Priest) on Jan 10, 2007 at 16:24 UTC
This provides an additional library path in @INC: `perl -Ifoo script.pl` [download] This provides arguments to the perl program in @ARGV: `perl script.pl -Ifoo` [download]	[reply] [d/l] [select]
Re: Problem using -I argument with Perl by rinceWind (Monsignor) on Jan 10, 2007 at 16:56 UTC
As imp has said, the -I option is a feature of the parsing of the command line, when the command is "perl". Unfortunately, you don't get the ability to jack in such command line options to perl, when you are using a file type association for .pl type files. You can get some command line options by passing them in on the shebang (#!) line: `#!perl -wT` Not sure if this would work with -I on Windows: try it. If this doesn't work, there are two other approaches that will definitely work: set PERL5LIB=C:\perl-programs\modules (semicolon separated list of paths on Windows) or add a `use lib` into the script. -- Oh Lord, won’t you burn me a Knoppix CD ? My friends all rate Windows, I must disagree. Your powers of persuasion will set them all free, So oh Lord, won’t you burn me a Knoppix CD ? (Missquoting Janis Joplin)	[reply] [d/l] [select]
Re^2: Problem using -I argument with Perl by ikegami (Patriarch) on Jan 10, 2007 at 17:41 UTC
In Windows, Perl checks the shebang line for options. `>type script.pl #!perl -Imoo $,=", "; $\="\n"; print @INC; >perl script.pl r:/Utils/perl/lib, r:/Utils/perl/site/lib, ., moo` [download] `-I...` adds to the end `@INC`. `-Mlib=...` adds to the front of `@INC`. (better)	[reply] [d/l] [select]
Re^2: Problem using -I argument with Perl by merrymonk (Hermit) on Jan 10, 2007 at 17:31 UTC
Many thanks for the two replies. I favoured the use lib option and tried to use this so that the code became. `use strict "vars"; my $inc_item; use lib "C:\\perl-programs\\modules"; foreach $inc_item (@INC) { print "$inc_item\n"; }` [download] This worked as required and gave the following from the print C:\perl-programs\modules C:/perl5/lib C:/perl5/site/lib . I then tried to use a moudule in the new directory with a new line at the end of the code above of `use modules::test-module` [download] However, this did not worked as I then got the following Can't locate modules/test.pm in @INC (@INC contains: C:\perl-programs\modules C: /perl5/lib C:/perl5/site/lib .) at C:\perl-programs\test-inc-iarg.pz line 13. BEGIN failed--compilation aborted at C:\perl-programs\test-inc-iarg.pz line 13. It seems that the lines are not processed in order so that it 'got' to the `use modules::test-module` [download] before the use lib line even though this nearer the beginning. How can this be made to work?	[reply] [d/l] [select]
Re^3: Problem using -I argument with Perl by rinceWind (Monsignor) on Jan 10, 2007 at 19:19 UTC
Name your module with an underscore instead of a hyphen -- Oh Lord, won’t you burn me a Knoppix CD ? My friends all rate Windows, I must disagree. Your powers of persuasion will set them all free, So oh Lord, won’t you burn me a Knoppix CD ? (Missquoting Janis Joplin)	[reply]
Re^4: Problem using -I argument with Perl by merrymonk (Hermit) on Jan 11, 2007 at 08:16 UTC
Re^3: Problem using -I argument with Perl by MaxKlokan (Monk) on Jan 11, 2007 at 09:16 UTC
With the line `use modules::test-module;` [download] you are trying to use C:\perl-programs\modules\modules\test-module.pm I suspect you mean to use C:\perl-programs\modules\test-module.pm For that, the correct syntax is: `use test-module;` [download] because you directory C:\perl-programs\modules is already in the INC path.	[reply] [d/l] [select]