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are controled by use flags that are generally well explained.
- apache (apache2) : php5 (libapache2-mod-php5), perl(libapache2-mod-perl2)
- php (php5-cli) : mod_json(php5-json), curl(php5-curl)
- libssl0.9.8
- libssl-dev
- libnet-ssleay-perl
- build-essential

So, to resume, under Ubuntu, for minimum requirements (tests won't all be runned) :
In this case, the php front-end won't be usable with this apache instance(which is, by the way, not a good idea).
#apt-get install apache2 apache2-threaded-dev libapache2-mod-perl2 build-essential libnet-ssleay-perl libssl-dev

If you want to run the entire test suite, you need some other functionnalities. Install the with :
#apt-get install libapache2-mod-php5 php5-common php5-cli php5-curl

2. Installation of the Perl Modules :
You have to install some perl modules from CPAN in order to make work the application.
cpan > install Module::Build File::Slurp MIME::Base64 Error DateTime Sys::Hostname IO::Socket::INET Config::General Config::Tiny XML::Simple Catalyst Catalyst::Plugin::ConfigLoader Catalyst::Plugin::Static::Simple Catalyst::Action::RenderView Catalys...

And if you want to run the full test suite and for devs environments:
cpan> install Module::ScanDeps Test::NoBreakpoints Test::Pod::Coverage Catalyst::Helper