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--- perlbrew [2014/05/20 21:44]
popel created
+++ perlbrew [2014/05/22 19:24]
popel
@@ Line 5: / Line 5: @@
 Martin Popel
-==== How to setup the Perlbrew environment ====
+===== How to setup the Perlbrew environment =====
-In your ''~.bashrc'':
+Add to your ''~.bashrc'':
   source /net/work/projects/perlbrew/init
   eval "$(bash-complete setup)"
-The second line is optional, but it enables [[https://metacpan.org/pod/Bash::Completion|Bash Completion]] for [[http://perlbrew.pl/|perlbrew]], [[https://metacpan.org/pod/App::cpanminus|cpanm]] and treex.
+The second line is optional, but it enables [[https://metacpan.org/pod/Bash::Completion|Bash Completion]] for [[http://perlbrew.pl/|perlbrew]], [[https://metacpan.org/pod/App::cpanminus|cpanm]] and treex (if the respective ''Bash::Completion::Plugins::XY'' modules are installed).
+Make sure you have deleted (commented out) the old setup_platform setup (''source /net/work/projects/perl_repo/admin/bin/setup_platform'') from your ''~/.bashrc''.
+===== How to use Perlbrew =====
-==== How to use Perlbrew ====
   perlbrew list               # Which perl versions are installed?
   perlbrew use perl-5.16.3    # use one of these perls for the current shell
   perlbrew switch perl-5.16.3 # use this perl version permanently
+  perlbrew off                # return to the system installation of perl
+You can read [[https://metacpan.org/pod/distribution/App-perlbrew/bin/perlbrew|the full Perlbrew documentation]] (but it should not be needed).
+===== How to install missing modules from CPAN =====
+If you see an error message such as ''Can't locate String/Diff.pm in @INC'', it means the module String::Diff is not installed.
+You can install it into the ÚFAL perlbrew repository, so it will be available also for others.
+If you are used to ''cpan'' tool, you can use it, but I recommend using ''cpanm'', which is faster.
+  cpanm String::Diff
+This installs String::Diff for the current architecture (32bit vs. 64bit) and the currently selected Perl version.
+If you want to install it for all Perl versions and the current architecture, use this trick
+  perlbrew exec cpanm String::Diff
+If you did this on your machine (32bit), you still need to ssh to some 64bit machine (e.g. ''sol1'') and install it there, if you want the module to be available from the LRC cluster.
+Useful switch for ''cpanm'' is ''-n'' (notest, useful e.g. for ''cpanm -n Tk''). See ''cpanm -h'' for more (e.g. installing from github, installing to your own local-lib).
+You can install the modules also manually (''perl Build.PL && ./Build && ./Build test && ./Build install''). There is no need to set ''--prefix'' nor ''--install_base'', because you (everyone group ufal) have write access to the shared ÚFAL perlbrew repository.
+===== How to install new Perl version =====
+  perlbrew available                    # list perl versions available for download
+  perlbrew install perl-5.16.3          # install this older version
+  perlbrew install -Dcc=gcc perl-5.16.3 # on Ubuntu10.04 64bit, I had to use this switch
+Now, we probably want to install all modules from the current perl to the new perl:
+  perlbrew list-modules > list.txt
+  perlbrew switch perl-5.16.3
+  cpanm < list.txt

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