Can't locate SOAP/Lite.pm in #INC - perl

I am trying to build LDV project by following this instructions, and i know nothing about perl.
i am getting the following error while running the test
ldv-task: NORMAL: Calling LDV-core.
Can't locate SOAP/Lite.pm in #INC (#INC contains: /home/acsia/perl5/perlbrew/perls/perl-5.10.0/lib/5.10.0/x86_64-linux /home/acsia/perl5/perlbrew/perls/perl-5.10.0/lib/5.10.0 /home/acsia/perl5/perlbrew/perls/perl-5.10.0/lib/site_perl/5.10.0/x86_64-linux /home/acsia/perl5/perlbrew/perls/perl-5.10.0/lib/site_perl/5.10.0 .) at /home/acsia/Desktop/LDV/consol-tools/ldv-core/ldv-core line 7.
BEGIN failed--compilation aborted at /home/acsia/Desktop/LDV/consol-tools/ldv-core/ldv-core line 7.
output of
perlbrew use
is :EDITED:
Currently using perl-5.22.0
output of
locate SOAP/Lite.pm
is
/usr/local/lib/perl5/site_perl/5.22.0/SOAP/Lite.pm
output of
which perl
is
/usr/local/bin/perl
and the LDV-core file is starting like this by default
#!/usr/bin/perl -w
#
my $instrumnet = 'ldv-core';
use FindBin;
# To prevent meaningless module warnings use this instead of use.
BEGIN { $SIG{'__WARN__'} = sub{}; require SOAP::Lite; SOAP::Lite->import(); $SIG{__WARN__}='DEFAULT'; }
use POSIX ":sys_wait_h";
use XML::Twig;
use IO::Socket::INET;
#use File::MimeInfo;
use File::Basename;
use Cwd qw(abs_path);
etc,... etc....
Thanks for your time...

If LDV-Core isn't yours, you should install SOAP::Lite using your system's package manager. If it's yours, read on.
perlbrew plays with your PATH so that executing perl will execute the desired perl.
But your script explicitly uses /usr/bin/perl, so which perl is currently selected using perlbrew switch or perlbrew use is irrelevant.
Stop overriding the default install location, and stop looking where you shouldn't.
unset PERL_MM_OPT
unset PERL_MB_OPT
unset PERL5LIB
unset PERLLIB
echo -ne 'o conf makepl_arg ""\no conf commit\n' | cpan
echo -ne 'o conf mbuildpl_arg ""\no conf commit\n' | cpan
The first four lines only have a temporary effect. You should stop setting those variables in your login script to make the change permanent.
Install SOAP::Lite in the desired Perl.
perlbrew use perl-5.22.0 # Or perl-5.10.0 or whatever
cpan SOAP::Lite
Fix your script's shebang.
perl -i~ -pe'
next if $. != 1;
s/^#!.*//s;
$_ = "#!$^X\n$_";
' LDV-core
PS — You don't need use FindBin;.

perlbrew perl is a way to install many perl versions in same machine. It is like virtenv in python. Perlbrew allow you to switch between various versions of perl and run perl programs against those versions.
system perl means the default version of perl which mostly come with linux distros. perlbrew changes that version against which program needs to run and your program will start running against different version.
If you are making something which does not require a lot of perl versions it is always better to use one version of perl and run programs against them.
Also if you are using linux distros and do not want to get into cpan and how to install perl modules, best is to search for corresponding libraries against that module and install them. For example in your case i search this way
aptitude search soap | grep perl
This give me two libraries on my ubuntu machine of which one is against this module. Installing them is easy and you can focus on your work rather than on how to install cpan modules.

Related

Perlbrew libs management

I have installed perlbrew and installed two Perls with it.
Now I am trying to separate libraries for modules I install with cpanm.
I want (if possible) to switch to one Perl (within Perlbrew) (for example: 5.22.4) and once I call cpanm install Some::Module the module will be installed in the separate library, related only to this Perl.
Then, in the script, I would like to have like the example below:
#!/usr/bin/env perl
use strict;
use Some::Module;
print "Content-type:text/html\n\n";
print "Works!";
and that's it. No any other use lib 'path'; or so.
I tried to use perlbrew lib create perl-5.22.4#somename and then switch to it.
Then call cpanm install Some::Module and I see the result at the location ~/.perlbrew/perl-5.22.4#somename/lib/perl5/Some/Module.pm, but when I call my script from a browser I see Error 500 and the logs say "missing module Some::Module, check #INC etc..."
What I also found that if I move the ~/.perlbrew/perl-5.22.4#somename/lib/perl5/Some/Module.pm to ~/perl5/perlbrew/perls/perl-5.22.4/lib/5.22.4/Some/Module.pm or to /home/arseniigorkin/perl5/perlbrew/perls/perl-5.22.4/lib/site_perl/5.22.4/x86_64-linux/Some/Module.pm then the script works. And Perl 5.22.4 (in our example) has its own library without need to use use lib 'path';
But, how to set up Perlbrew to switch cpanm automatically to this directory?
What I was also trying: cpanm install -l /home/arseniigorkin/perl5/perlbrew/perls/perl-5.22.4/lib/site_perl/5.22.4/x86_64-linux Some::Module to specify the target lib dir, but it creates the next tree under /home/arseniigorkin/perl5/perlbrew/perls/perl-5.22.4/lib/site_perl/5.22.4/x86_64-linux instead:
lib
perl5
Some
Module.pm
x86_64-linux
auto
[.....]
.meta
[.....]
perllocal.pod
install.pm
man
man3
[.....]
and, sadly, the script throws Error 500.
So, is there a possibility to omit use lib 'path'; in the script, switching between multiple Perl versions in Perlbrew?
This all happens on Ubuntu 22.04.
Update:
When switching to perl-5.22.4#somename and installing Some::Module via cpanm the module appears under the ~/.perlbrew/perl-5.22.4#somename/lib/perl5/Some/Module.pm as mentioned above, but the CGI script fails with Error 500.
However, when I execute the next command: perlbrew list-modules it shows Some::Module as installed under the current Perl (which I am switched to). So, this is a dissonance: Perlbrew "sees" the module under the specific Perl, but the CGI script cannot "see" this module under the same Perl.
Update 2:
here is the output of the perlbrew info:
Current perl:
Name: perl-5.22.4#somename
Path: /home/username/perl5/perlbrew/perls/perl-5.22.4/bin/perl
Config: -de -Dprefix=/home/username/perl5/perlbrew/perls/perl-5.22.4 -Dusesitecustomize -Aeval:scriptdir=/home/username/perl5/perlbrew/perls/perl-5.22.4/bin
Compiled at: Nov 10 2022 23:26:53
perlbrew:
version: 0.96
ENV:
PERLBREW_ROOT: /home/username/perl5/perlbrew
PERLBREW_HOME: /home/username/.perlbrew
PERLBREW_PATH: /home/username/.perlbrew/libs/perl-5.22.4#somename/bin:/home/username/perl5/perlbrew/bin:/home/arseniigorkin/perl5/perlbrew/perls/perl-5.22.4/bin
PERLBREW_MANPATH: /home/username/.perlbrew/libs/perl-5.22.4#somename/man:/home/username/perl5/perlbrew/perls/perl-5.22.4/man
Update 3:
The dirs permissions for the libs:
and
#terry0its is the name of the library (in the example I called it #somename.
Update 4:
Printing vars:
PERL_MB_OPT
PERL_MM_OPT
PERL5LIB
PATH
PERL_LOCAL_LIB_ROOT
with the script:
#!/usr/bin/env perl
print "Content-type:text/html\n\n";
print <<HTML;
Vars:<br>
PERL_MB_OPT = #{[$ENV{"PERL_MB_OPT"}]}<br>
PERL_MM_OPT = #{[$ENV{"PERL_MM_OPT"}]}<br>
PERL5LIB = #{[$ENV{"PERL5LIB"}]}<br>
PATH = #{[$ENV{"PATH"}]}<br>
PERL_LOCAL_LIB_ROOT = #{[$ENV{"PERL_LOCAL_LIB_ROOT"}]}<br>
HTML
In the web browser:
Vars:
PERL_MB_OPT =
PERL_MM_OPT =
PERL5LIB =
PATH = /home/username/.perlbrew/libs/perl-5.22.4#terry0its/bin:/home/username/perl5/perlbrew/bin:/home/username/perl5/perlbrew/perls/perl-5.22.4/bin:/root/Komodo IDE/bin:/home/username/anaconda3/condabin:/root/Komodo IDE/bin:/home/username/pycharm/bin:/home/username/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/snap/bin:/home/username/.local/share/JetBrains/Toolbox/scripts
PERL_LOCAL_LIB_ROOT =
With the terminal:
Content-type:text/html
Vars:
PERL_MB_OPT = --install_base
/home/username/.perlbrew/libs/perl-5.22.4#terry0its
PERL_MM_OPT =
INSTALL_BASE=/home/username/.perlbrew/libs/perl-5.22.4#terry0its
PERL5LIB =
/home/username/.perlbrew/libs/perl-5.22.4#terry0its/lib/perl5
PATH =
/home/username/.perlbrew/libs/perl-5.22.4#terry0its/bin:/home/username/perl5/perlbrew/bin:/home/username/perl5/perlbrew/perls/perl-5.22.4/bin:/root/Komodo
IDE/bin:/home/username/anaconda3/condabin:/root/Komodo
IDE/bin:/home/username/pycharm/bin:/home/username/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/snap/bin:/home/username/.local/share/JetBrains/Toolbox/scripts
PERL_LOCAL_LIB_ROOT =
/home/username/.perlbrew/libs/perl-5.22.4#terry0its
Update 5:
When I switch to a pure perl-5.22.4 (without external lib, like #terry0its) I see the next output for the same scripts (after the restart of the server):
In the web browser:
Vars:
PERL_MB_OPT =
PERL_MM_OPT =
PERL5LIB =
PATH = /home/username/anaconda3/condabin:/home/username/perl5/perlbrew/bin:/home/username/perl5/perlbrew/perls/perl-5.22.4/bin:/root/Komodo IDE/bin:/home/arseniigorkin/perl5/bin:/home/username/pycharm/bin:/home/username/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/snap/bin:/home/username/.local/share/JetBrains/Toolbox/scripts
PERL_LOCAL_LIB_ROOT =
With the terminal:
Content-type:text/html
Vars:
PERL_MB_OPT --install_base "/home/username/perl5"
PERL_MM_OPT = INSTALL_BASE=/home/username/perl5
PERL5LIB =
PATH =
/home/username/anaconda3/condabin:/home/username/perl5/perlbrew/bin:/home/username/perl5/perlbrew/perls/perl-5.22.4/bin:/root/Komodo IDE/bin:/home/username/perl5/bin:/home/username/pycharm/bin:/home/username/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/snap/bin:/home/username/.local/share/JetBrains/Toolbox/scripts
PERL_LOCAL_LIB_ROOT =
/home/username/perl5
The issue was related to Apache2 server-specific behavior with ENV variables.
It strips off some environment variables so they are undefined in your CGI scripts.
To have them in the CGI script you simply have to add PassEnv PERL5LIB into your host conf file and restart the server. Then, voila - you have PERL5LIB showing correctly in the output of $ENV{PERL5LIB} all across your site.
The example code:
<Directory "/home/user/someproject/server/www/public_html/cgi-bin">
AllowOverride All
Options None
Require all granted
Options +ExecCGI
PassEnv PERL5LIB
AddHandler cgi-script .cgi .pl
</Directory>
So, to use Perlbrew and easily switching between Perls and to have automatically handling all your libs (incl. externally created with perlbrew create lib somename) you have to PASS the PERl5LIB environment to your CGI scripts explicitly in the Apache configuration file for your host.
Do not forget to check if your mod_env is enabled in the httpd.conf (main Apache configuration file) as LoadModule env_module modules/mod_env.so (it must be uncommented).
I hope it will help others to handle easily their Perl libraries of perlbrew with Apache2 server.
Also, the module mod_env allows us to add custom environment variables, that we will be able to use all across the host or a server (it depends on where you put it in - inside the main conf file, your host file, or just into .htaccess for a particular dir(s) or even page(s)).
perlbrew does two things:
Makes installing Perl a little bit easier.
Manipulate the PATH of a shell that loads it.
The CGI script isn't launched by a shell.
First, you shouldn't be using PERL5LIB. Why install a custom perl using perlbrew and then try to cause it to use modules installed by another perl? This is nothing but bad. Unset PERL5LIB.
And with PERL5LIB unset, you shouldn't be using PERL_MB_OPT and PERL_MM_OPT either. You need to let the modules get installed where perl will find them.
So start by cleaning out the mess. Make sure PERL5LIB, PERL_MB_OPT and PERL_MM_OPT aren't set anywhere. You may to need reinstall the modules if they were installed in a weird place.
Now, using the correct perl will load the modules installed by that perl.
So what left is ensuring that we're using the correct perl. You use /usr/bin/env to locate perl. Does it makes sense for Apache's PATH to control which perl your application uses? Probably not.
What I would do is create an alias in perlbrew for your project.
perlbrew alias create perl-5.22.4#somename myproject
Then use the following shebang line:
#!/home/username/perl5/perlbrew/perls/myproject/bin/perl
That will allow you use to control which build of perl your project uses using
perlbrew alias create -f ... myproject
This works using symlinks, not PATH manipulation, so it works from anywhere, not just shells using perlbrew.

Specify shebang on project using Perl Module::Build

I'm packaging clusterssh to openSUSE and need to change default shebang from #!/usr/bin/env perl to #!/usr/bin/perl. clusterssh uses Module::Build.
I'll probably use the patch (as Debian package do), but I wonder easy usage for fix_shebang_line(#files) in RPM packaging.
It's already called during the building process.
Basically, uninstalled scripts should use #!/usr/bin/perl or #!perl, and the installation process should rewrite that to the point to the perl used to run the installer. That way, a script installed by /usr/bin/perl will use /usr/bin/perl, and a script installed using /home/ikegami/usr/perlbrew/perls/5.26.2t/bin/perl will use /home/ikegami/usr/perlbrew/perls/5.26.2t/bin/perl.
(This applies to both the Module::Build installer and the ExtUtils::MakeMaker installer.)
Note that the documentation for fix_shebang_line says it doesn't touch a shebang line of #!/usr/bin/env perl (because it's not recognized as invocation of perl), so simply patching the scripts to use #!/usr/bin/perl instead of #!/usr/bin/env perl does the trick.
With that change, the install-ready staging directory (blib) produced by ./Build will contain the edited files.
$ perl -e'CORE::say $^X'
/home/ikegami/usr/perlbrew/perls/5.26.2t/bin/perl
$ for fn in ccon crsh csftp cssh ctel; do printf '%-6s ' "$fn:"; head -n 1 "bin_PL/$fn"; done
ccon: #!/usr/bin/perl
crsh: #!/usr/bin/perl
csftp: #!/usr/bin/perl
cssh: #!/usr/bin/perl
ctel: #!/usr/bin/perl
$ perl Build.PL
Could not get valid metadata. Error is: ERROR: Missing required field 'dist_abstract' for metafile
Could not create MYMETA files
Creating new 'Build' script for 'App-ClusterSSH' version 'v4.13.203'
$ ./Build
Building App-ClusterSSH
Using perl binary: /home/ikegami/usr/perlbrew/perls/5.26.2t/bin/perl
Using perl version v5.26.2
Generating: /home/ikegami/tmp/clusterssh/bin_PL/cssh
Generating: /home/ikegami/tmp/clusterssh/bin_PL/csftp
Generating: /home/ikegami/tmp/clusterssh/bin_PL/ccon
Generating: /home/ikegami/tmp/clusterssh/bin_PL/crsh
Generating: /home/ikegami/tmp/clusterssh/bin_PL/ctel
Generating: /home/ikegami/tmp/clusterssh/bin_PL/clusterssh_bash_completion.dist
$ for fn in ccon crsh csftp cssh ctel; do printf '%-6s ' "$fn:"; head -n 1 "blib/script/$fn"; done
ccon: #!/home/ikegami/usr/perlbrew/perls/5.26.2t/bin/perl
crsh: #!/home/ikegami/usr/perlbrew/perls/5.26.2t/bin/perl
csftp: #!/home/ikegami/usr/perlbrew/perls/5.26.2t/bin/perl
cssh: #!/home/ikegami/usr/perlbrew/perls/5.26.2t/bin/perl
ctel: #!/home/ikegami/usr/perlbrew/perls/5.26.2t/bin/perl
I didn't bother running ./Build install, whose main task is to copy the files from the staging directory into their final locations. Besides, that part will need to be replaced by your package manager anyway (assuming you're simply placing the contents of the blib directory into your package).
If you somehow need to do it yourself, you could use the following:
find bin -type f \
-exec perl -i -pe'
s/^#!\S*perl\S*/#!$^X/ if $. == 1;
close ARGV if eof;
' {} +
Notes:
Use the perl you wish the scripts to use.
GNU tools assumed; adjust as necessary.
close ARGV if eof; resets the line number ($.) for each file.
eof is different than eof(), and only the former will work here.
The line breaks are optional and may be removed.

Perl PP doesn't include Switch module

I created a perl script that includes the Switch module.
hello_world.pl
use strict;
use warnings;
use Switch;
use Data::Dumper;
my $var = "Hello World\n";
print Dumper($var);
if I launch perl hello_world.pl everything works fine. But if I pack my script with pp hello_world.pl and than launch ./a.out it gives me back this error:
Can't locate Switch.pm in #INC (you may need to install the Switch module) (#INC contains: CODE(0x7fb2631e6a88) /var/folders/rb/2b5sbs355n57svwzjjh7cb9c0000gn/T/par-6967676c6f62616c33/cache-710e967842eb844ab8d6fe5f46968c1b6f49e019/inc/lib /var/folders/rb/2b5sbs355n57svwzjjh7cb9c0000gn/T/par-6967676c6f62616c33/cache-710e967842eb844ab8d6fe5f46968c1b6f49e019/inc CODE(0x7fb262988de0) CODE(0x7fb262989930)) at script/hello_world.pl line 3.
BEGIN failed--compilation aborted at script/hello_world.pl line 3
$ corelist Switch
Data for 2016-05-09
Switch was first released with perl v5.7.3, deprecated (will be CPAN-only) in v5.11.0 and removed from v5.13.1
Switch was never a good idea. It's a source filter which means it's a clever party trick but shouldn't be used in production code. For that reason it has removed from Perl several versions ago.
I suspect that you are running your packaged program on a more recent version of Perl than the unpackaged version - one that no longer includes Switch.
You can install Switch on your target system or you can work out how to get pp to include the module in the package. But the best solution is to rewrite the code to stop using Switch.
You can try to force the modules to be included, with -M option:
pp -M Switch -M YAML ...

use perlbrew with dist zilla test

I am using the Dist::Zilla module to release and test my module. I am also using Perlbrew. When I run a script using perlbrew that includes my module, the script runs fine:
use strict;
use My::Module;
However, whenever I run dzil test, on a test that just tries to include my module:
#!perl -T
use strict;
use warnings FATAL => 'all';
use Test::More;
plan tests => 1;
BEGIN {
use_ok( 'My::Module' ) || print "Bail out!\n";
}
diag( "Testing My::Module $My::Module::VERSION, Perl $], $^X" );
It fails with this error saying that it can't find the module Mouse (which my module includes):
Error: Can't locate Mouse.pm in #INC (you may need to install the Mouse module) (#INC contains:
/Users/user/github/My/Module/.build/HoKOnIQGYr/blib/lib
/Users/user/github/My/Module/.build/HoKOnIQGYr/blib/arch
/Users/user/perl5/lib/perl5/darwin-thread-multi-2level
/Users/user/perl5/lib/perl5/darwin-thread-multi-2level
/Users/user/perl5/lib/perl5
/opt/local/lib/perl5/vendor_perl/5.16.1/darwin-thread-multi-2level/
/Users/user/perl5/lib/perl5/darwin-thread-multi-2level
/Users/user/perl5/lib/perl5
/opt/local/lib/perl5/vendor_perl/5.16.1/darwin-thread-multi-2level/
/Library/Perl/5.18/darwin-thread-multi-2level /Library/Perl/5.18
/Network/Library/Perl/5.18/darwin-thread-multi-2level
/Network/Library/Perl/5.18
/Library/Perl/Updates/5.18.2/darwin-thread-multi-2level
/Library/Perl/Updates/5.18.2
/System/Library/Perl/5.18/darwin-thread-multi-2level
/System/Library/Perl/5.18
/System/Library/Perl/Extras/5.18/darwin-thread-multi-2level
/System/Library/Perl/Extras/5.18) at
/Users/user/github/My/Module/.build/HoKOnIQGYr/blib/lib/My/Module.pm line 4.
It says that it cannot find Mouse.pm, which I know is located at
/Users/user/perl5/lib/perl5/darwin-2level
I see that for some reason that directory is not located in #INC, which is interesting because if I run this command to print out all the directories in #INC:
perl -e 'print "$_\n" for #INC'
I get:
/Users/user/perl5/lib/perl5/darwin-2level
/Users/user/perl5/lib/perl5
/opt/local/lib/perl5/vendor_perl/5.16.1/darwin-thread-multi-2level/
/Users/user/perl5/perlbrew/perls/perl-5.16.0/lib/site_perl/5.16.0/darwin-2level
/Users/user/perl5/perlbrew/perls/perl-5.16.0/lib/site_perl/5.16.0
/Users/user/perl5/perlbrew/perls/perl-5.16.0/lib/5.16.0/darwin-2level
/Users/user/perl5/perlbrew/perls/perl-5.16.0/lib/5.16.0
.
So when I run perl on the command line then the darwin-2level directory is present in #INC, but whenever I run dzil test it is not. This might not have much to do with Dist::Zilla, since I think Dist::Zilla just creates Makefile.PL and runs make test for you. Could this be because for testing an older version of perl is being required? Like so:
use 5.006;
But even so, some Perlbrew directories are present in #INC during the test such as
/Users/user/perl5/lib/perl5/darwin-thread-multi-2level
Does anyone know how I can make it so I can use the Mouse installation in my perl directory instead of installing a systemwide one? I had a previous error with another module that couldn't be found when I ran dzil test, and that module was in the same directory as Mouse. I was able to fix the issue by installing the module systemwide instead of locally in my home perl5 directory, but I'd prefer to use the Mouse installed by Perlbrew and not mess with my system perl if possible. I am using Perlbrew version 0.73.
You're trying to install it using the wrong perl since you're using dzil installed by a different perl than the one you want to use.
Furthermore, you shouldn't see any of the following in your perlbrewed perl's #INC:
/Users/user/perl5/lib/perl5/darwin-2level
/Users/user/perl5/lib/perl5
/opt/local/lib/perl5/vendor_perl/5.16.1/darwin-thread-multi-2level/ (You perlbrewed perl isn't even threaded!!!)
Let's clean up your environment.
Unset env vars PERL5LIB, PERLLIB, PERL5OPT, PERL_MM_OPT and PERL_MB_OPT. Permanently. Get rid of them in your login scripts, then unset them from the current shell or log back in. (Make a note of what they were as a backup.)
Clear cpan's configuration item makepl_arg. From within cpan,
o conf makepl_arg # Just to see its current value as a backup.
o conf makepl_arg ''
o conf commit
In particular, we want to remove anything that indicates an installation path, including INSTALL_BASE, PREFIX and LIB.
Clear cpan's configuration item mbuildpl_arg. From within cpan,
o conf mbuildpl_arg # Just to see its current value as a backup.
o conf mbuildpl_arg ''
o conf commit
In particular, we want to remove anything that indicates an installation path, including --install_base, --prefix and --lib.
Since you're there, do the following from within cpan:
o conf build_dir_reuse 0
o conf commit
This will restore the setting to its default, which will save you headaches if it was changed.
Install the dependencies.
cpan Dist::Zilla Mouse
At this point, executing which dzil should give
/Users/user/perl5/perlbrew/perls/perl-5.16.0/bin/dzil
If so, you should be good to go.
If not, do hash -r and try which dzil again. (This shouldn't be needed, but just to be sure.)
If still not, provide the output of the following commands:
echo "$PATH"
which cpan
head -n 3 "$( which cpan )"
echo 'o conf' | cpan | grep arg
which dzil
head -n 3 "$( which dzil )"
perl -V # Uppercase "V"

How can I find out where a Perl module is installed?

How do get the path of a installed Perl module by name,
e.g. Time::HiRes?
I want this just because I have to run my perl script on different nodes of a SGE Grid Engine system. Sometimes, even run as other username.
I can use CPAN.pm to install packages for myself, but it is not so easy to install for other users without chmod 666 on folders.
perl -MTime::HiRes -e 'print $INC{"Time/HiRes.pm"}' or perldoc -l Time::HiRes
Mostly I use perldoc to get a location:
$ perldoc -l Module
You can also get module details with the cpan tool that comes with Perl:
$ cpan -D Time::HiRes
Time::HiRes
-------------------------------------------------------------------------
High resolution time, sleep, and alarm
J/JH/JHI/Time-HiRes-1.9719.tar.gz
/usr/local/perls/perl-5.10.0/lib/5.10.0/darwin-2level/Time/HiRes.pm
Installed: 1.9711
CPAN: 1.9719 Not up to date
Andrew Main (Zefram) (ZEFRAM)
zefram#fysh.org
It even works on modules that you haven't installed:
$ cpan -D Win32::Process
Win32::Process
-------------------------------------------------------------------------
Interface to Win32 Process functions
J/JD/JDB/Win32-Process-0.14.tar.gz
Installed:
CPAN: 0.14 Not up to date
Jan Dubois (JDB)
jand#activestate.com
I think maybe I need an XML option like svn.
Note: This solution proposes use of a (self-authored) utility that you must download. While it offers what I believe to be helpful features, installing a third-party solution first is not an option for everyone.
I've created whichpm, a cross-platform CLI (Linux, macOS, Window) that locates installed Perl modules by module (package) name, and optionally reports information about them, including detection of accidental duplicates.
Examples
# Locate the Data::Dumper module.
$ whichpm Data::Dumper
/usr/lib/perl/5.18/Data/Dumper.pm
# Locate the Data::Dumper module, and also print
# version information and core-module status.
$ whichpm -v Data::Dumper
Data::Dumper 2.145 core>=5.005 /usr/lib/perl/5.18/Data/Dumper.pm
# Locate the Data::Dumper module and open it in your system's default text
# editor.
$ whichpm -e Data::Dumper
# Look for accidental duplicates of the Foo::Bar module.
# Normally, only 1 path should be returned.
$ whichpm -a Foo::Bar
/usr/lib/perl/5.18/Foo/Bar.pm
./Foo/Bar.pm
# Print the paths of all installed modules.
$ whichpm -a
Installation
Prerequisites: Linux, macOS, or Windows, with Perl v5.4.50 or higher installed.
Installation from the npm registry
With Node.js or io.js installed, install the package as follows:
[sudo] npm install whichpm -g
Manual installation (macOS and Linux)
Download the CLI as whichpm.
Make it executable with chmod +x whichpm.
Move it or symlink it to a folder in your $PATH, such as /usr/local/bin (OSX) or /usr/bin (Linux).
If need to find which modules are actually used by your script you can use perl debuggers M command:
[ivan#server ~]$ perl -d your_script.pl
...
Debugged program terminated. Use q to quit or R to restart,
use o inhibit_exit to avoid stopping after program termination,
h q, h R or h o to get additional info.
DB M
'AutoLoader.pm' => '5.60 from /usr/lib/perl5/5.8.8/AutoLoader.pm'
'Carp.pm' => '1.04 from /usr/lib/perl5/5.8.8/Carp.pm'
...
This will help in case when you have modules with same names but in different folder.
I just find another one:
http://www.perlmonks.org/?node_id=568730
#!/bin/sh
echo 'print map { sprintf( "%20s : %s\n", $_, $INC{$_} ) } sort keys %INC; print "\n'$1' version : $'$1'::VERSION\n\n"' | perl "-M$1"
the script just print out everything in %INC when you run perl -MSTH::STH
eg:
$ whichpm CGI
CGI.pm : /System/Library/Perl/5.8.6/CGI.pm
CGI/Util.pm : /System/Library/Perl/5.8.6/CGI/Util.pm
Carp.pm : /System/Library/Perl/5.8.6/Carp.pm
Exporter.pm : /System/Library/Perl/5.8.6/Exporter.pm
constant.pm : /System/Library/Perl/5.8.6/constant.pm
overload.pm : /System/Library/Perl/5.8.6/overload.pm
strict.pm : /System/Library/Perl/5.8.6/strict.pm
vars.pm : /System/Library/Perl/5.8.6/vars.pm
warnings.pm : /System/Library/Perl/5.8.6/warnings.pm warnings/register.pm : /System/Library/Perl/5.8.6/warnings/register.pm
CGI version : 3.05
I like to use the V module.
Just install it from CPAN or by installing the package libv-perl on Debian or Ubuntu.
Then use it like this:
$ perl -MV=DBI
DBI
/Users/michiel/.plenv/versions/5.24.0/lib/perl5/site_perl/5.24.0/darwin-2level/DBI.pm: 1.636
Other output example:
$ perl -MV=Time::HiRes
Time::HiRes
/usr/lib/perl/5.18/Time/HiRes.pm: 1.9725
It seems like the simplest way is perldoc -l Time::HiRes.
If that isn't available for some reason, here's a pragmatic solution:
Step 1: Instantiate the module in your script...
#! /usr/bin/perl -w
use Time::HiRes();
new Time::HiRes();
Step 2: Execute the script with the Perl graphical debugger...
export PERL5LIB=$PERL5LIB:~/perl ## tell perl where to look for "Devel"/"ptkdb.pm"
perl -d:ptkdb (yourscript.pl)
Step 3: Step in to the new call.
The full pathname of the module will be displayed on the title-bar of the debugger window.
Another approach that might be useful would be to search all of the folders in $PERL5LIB.
Perldoc -l works for me
perldoc -l "File::Find"
/opt/perl_32/lib/5.8.8/File/Find.pm
To expand on #Ivan's answer that allows this to be run without installing additional software the following will use Perl's debugger to find a specific module (or modules):
perl -de 'use <Module Name>;'
For Example:
perl -de 'use DBD::Oracle;'
Output:
Loading DB routines from perl5db.pl version 1.37
Editor support available.
Enter h or 'h h' for help, or 'man perldebug' for more help.
DBD::Oracle::CODE(0x27f81d8)(/usr/local/lib64/perl5/DBD/Oracle.pm:113):
113: $ENV{PERL_BADFREE} = 0;
DB<1> q
In OSX you can use:
perl -e 'print join("\n",#INC)'
The result should be the location of your lib.
Then add this code in your Perl code:
use lib '/your/folder/location/to/lib';