I have found it necessary to expand upon a CPAN module. (Unicode::CharName goes up to Unicode 4.1; I need some characters from Unicode 5.0 & 5.1).
I've made the changes needed and have my own CharName.pm module.
I now would like to use it with my various Perls. I currently use:
Strawberry Perl for Windows
git for Windows MINGW64; My .bashrc sets
$PATH to Strawberry perl and $PERL5LIB=/c/Strawberry/perl/vendor/lib:/c/Strawberry/perl/site/lib
WSL Ubuntu
Where should I put my version of Unicode::CharName, so that it over-rides the ones installed by CPAN?
I don't want to have to change any scripts that currently
use Unicode::CharName;
Using cpanm you could download the module, patch it, and install it as normal:
$ cpanm --look Unicode::CharName
# new shell opens
$ patch lib/Unicode/CharName.pm custom.patch # or whatever process
$ perl Makefile.PL
$ make install
$ exit
You can also install it to a local::lib to avoid overwriting it globally, by adding the -l local/ option to the cpanm command. Then you can add the absolute path of this local::lib to your PERL5LIB or via -I or use lib. If you specified /path/to/local for the -l option, it would be /path/to/local/lib/perl5.
Manually copying files rather than going through the normal installation process is likely to lead to problems. Many distributions depend on the installation process to build the modules correctly. Also, you will need to install the module separately for each Perl you want to use it for; installed Perl modules are not generally cross-compatible between Perl versions or architectures. (A strictly simple pure-Perl module can be an exception to these rules, but the only module I feel comfortable abusing this way is App::cpanminus, because it was designed to do this.)
I have perl 5.10.1 on my server but I need a higher version of perl than that. I do not have privileges to modify this version so I installed the latest one on my home directory. How do I specify unix to preferentially use the newer version?
The simplest answer is to use perlbrew. This is a tool to install and manage multiple Perl installations in your home directory. You can switch between which one is active.
Follow the instructions on their page to install perlbrew, and then install the latest stable Perl with...
perlbrew install stable
Then tell perlbrew that's the Perl you want to use with...
perlbrew switch stable
If you want to install more modules, use cpanm to install modules to the currently active perl.
cpanm Acme::Pony
If you don't want to use perlbrew, you need to mess with your PATH environment variable. This is a list of directories your shell will search through when finding a program to run. You'd need to put /path/to/where/you/installed/perl/bin at the front. More on this in this article.
I highly recommend you use perlbrew. It takes care of all this for you.
I'm a C/C++/Java/Unix geek by trade, but now I have to write a Perl program in Windows. So I've got Cygwin, Eclipse with EPIC installed, and simple test programs run. I do not have a Unix machine available to me that I can run Eclipse on.
But I need to use Net::TCP::Server and I can't figure out how to install it. It doesn't appear to be part of the Cygwin Perl install, and I don't want to spend 5 days learning the world of Perl and CPAN and Perl configuration. I just want to write my program.
Any simple ways of installing a Perl module in Cygwin? I'm thinking something like apt-get install would be nice, but I expect that's too much to hope for.
Thanks
$ perl -MCPAN -e shell
cpan shell -- CPAN exploration and modules installation (v1.9402)
Enter 'h' for help.
cpan[1]> install Net::TCP::Server
And it's instructive to list the configuration with the o conf command.
Seeing that some of the info here is a bit outdated and too complicated, I'd rather suggest the following. There are a few different Perl package managers in use. They are all installed with cpan (which is already part of the Cygwin Perl installation), like this:
# Install ppm (outdated)
cpan PPM
# Install cpanp (still used)
cpan CPANPLUS
# Install cpanm (most recent)
cpan App::cpanminus
Then you can install any Perl package you like, as for example in the OP, using cpanm:
cpanm Net::TCP::Server
Sometimes (as noted above) Cygwin may fail certain tests. For example, when using IPv6 on a machine only configured with IPv4, or when your windows firewall is blocking some tests, etc. To attempt to install anyway, try to use the force flag; -f.
cpanm -f Net::TCP::Server
I'm a C/C++/java unix geek by trade, but now I have to write a perl program in windows. So I've got cygwin, eclipse with EPIC installed, and simple test programs run. I do not have a unix machine available to me that I can run eclipse on.
You should be able to run Eclipse with EPIC right under Windows without Cygwin. I like Cygwin for many things, but it isn't exactly a very stable platform. Eclipse runs as a Java program, so all you have to do is make sure Java is installed on your PC. There is even a pre-built Eclipse package.
You can also get a decent Perl that runs right under Windows. Either ActivePerl or Strawberry Perl. Either one will work although many Unix heads prefer Strawberry Perl because it comes with the same MIGW environment that Cygwin has and many feel it's more compatible with the Unix Perl brethren. However, ActiveState Perl can use the Perl Package Manager (PPM) that contains pre-built modules. Unfortunately, the module you want isn't available via PPM.
But I need to use Net::TCP::Server and I can't figure out how to install it. It doesn't appear to be part of the cygwin perl install, and I don't want to spend 5 days learning the world of perl and cpan and perl configuration. I just want to write my program.
Installing from CPAN is really quite simple. The first time you run CPAN, it should pretty much configure itself. Then, to do an install, you run cpan install Net::TCP::Server and that should be it. However, I've tried on several Mac, Unix, and Linux machines, and I can't get it to work. So, this isn't a Windows problem as much as a problem with this module. It is fairly old, and might not work well in newer versions of Perl. You might have to force the install over test's objections.
Maybe you can use one of the already installed IO modules that come with Perl instead. That'll save you a boatload of trouble because the required modules are part of Perl's existing package.
Despite Cygwin's "problems," I use it regularly whenever I have to use Windows. I would recommend first installing a separate installation of Perl using perlbrew so that you won't interfere with Cygwin's copy of Perl in case something bad happens since Cygwin does not enforce root-user policy. In cygwin shell, type
\curl -L http://install.perlbrew.pl | bash
This should walk through the installation for perlbrew and set it up in one of your executable path. Next type
perlbrew init
perlbrew install --force stable
perlbrew switch stable
Wait a bit while a mint Perl is compiled. For unknown reason, Perl can only pass 99.23% of the core module tests on Cygwin (at least on my machine),hence the --force flag). My experience is that it mostly have something to do with handling of device files, like ports and pipes. I am unaware of people trying to resolve the issue as it seems like a Cygwin problem. Although it has not presented much problem for me with general system and web programming tasks. The module testing routines will fail if any problem exists so I am not fretting over it.
Next step is to install cpanm (cpanminus), type
perlbrew install-cpanm
From here on out, to install any library from CPAN, just type
cpanm [library::name1] [library::name2]
cpanm makes it trivial to install any Perl modules. You can even install from your local directory instead of CPAN.
Your mileage may vary, but I had a lot of trouble until I realized that Strawberry perl had a lot of bin folders in my PATH, and when I changed my .bashrc to export only a very simple PATH=/bin:/usr/bin:/usr/local/bin, Cygwin's perl installation's cpan started working beautifully. I used local:lib as Cygwin doesn't support sudo. Before it got into a bad loop saying "Press SPACE and ENTER to exit Patch" over and over.
i am using active perl 5.12 for 32 bit windows XP laptop.i want to install DFA::Simple or DFA::Command module to create a finite state machine.i tried installing from ppm repositories using ppm install [ppmx file] but it didn't install properly.please suggest me any other method which would be better to insrall or any other perl module which can be used to crate a simple state machine.
Download it. Then do from command prompt:
perl Makefile.pl.
dmake test
dmake install
DFA::Simple module was deleted from CPAN, but you should be able to find it on backpan.
P.S. You can download dmake on CPAN. You may use nmake instead of dmake.
DFA::Simple is on github at https://github.com/gitpan/DFA-Simple.
I have started using perlbrew and installed perl-5.12.2.
I understand I need to re-install my CPAN modules, so I switched to my new Perl version (perlbrew switch perl-5.12.2 and hash -r), verified the switch was successful (perl -v) then tried installing some module (File::Copy::Recursive using cpan. However, cpan says `File::Copy::Recursive is up to date (0.38).
When I start a Perl script using this module, it shouts Can't locate File/Copy/Recursive.pm in #INC ... (showing many perl-5.12.2 locations). When I switch back to my 'normal' Perl (perlbrew off) the script runs fine.
Any suggestions? Perhaps CPAN does not work well with perlbrew?
After installing perlbrew you could install cpanm through this command:
perlbrew install-cpanm
Otherwise you will need to install cpanm manually each time you switch your Perl version on perlbrew. With this command just once.
Once installed you can then use cpanm to install the missing module:
cpanm File::Copy::Recursive
Everything should be working fine with "cpan" as well as "cpanm", that is: when switching perl with perlbrew, cpan sees the installed modules of the version you use.
While it's true that cpanm is the recommended tool to use with perlbrew, cpan allows for test reporting so that is what I always use.
How do I install CPAN modules while using perlbrew?
That's how:
perlbrew use <version>
cpan -i <module>