pi@raspberrypi:~ $ sudo cpanm install LWP::Protocol::https --force
--> Working on install
Fetching http://www.cpan.org/authors/id/D/DA/DAGOLDEN/install-0.01.tar.gz ... OK
Configuring install-0.01 ... OK
Building and testing install-0.01 ... OK
Successfully reinstalled install-0.01
--> Working on LWP::Protocol::https
Fetching http://www.cpan.org/authors/id/O/OA/OALDERS/LWP-Protocol-https-6.07.tar.gz ... OK
Configuring LWP-Protocol-https-6.07 ... OK
==> Found dependencies: IO::Socket::SSL
--> Working on IO::Socket::SSL
Fetching http://www.cpan.org/authors/id/S/SU/SULLR/IO-Socket-SSL-2.048.tar.gz ... OK
Configuring IO-Socket-SSL-2.048 ... OK
==> Found dependencies: Net::SSLeay
--> Working on Net::SSLeay
Fetching http://www.cpan.org/authors/id/M/MI/MIKEM/Net-SSLeay-1.81.tar.gz ... OK
Configuring Net-SSLeay-1.81 ... OK
Building and testing Net-SSLeay-1.81 ... FAIL
! Installing Net::SSLeay failed. See /root/.cpanm/work/1495295239.28649/build.log for details. Retry with --force to force install it.
! Installing the dependencies failed: Module 'Net::SSLeay' is not installed
! Bailing out the installation for IO-Socket-SSL-2.048.
! Installing the dependencies failed: Module 'IO::Socket::SSL' is not installed
! Bailing out the installation for LWP-Protocol-https-6.07.
1 distribution installed

pi@raspberrypi:~ $ perl -v

This is perl 5, version 20, subversion 2 (v5.20.2) built for arm-linux-gnueabihf-thread-multi-64int

Installed modules are:
   App::cpanminus
   Data::Dump
   Digest::HMAC
   Encode::Locale
   File::Listing
   HTML::Parser
   HTML::Tagset
   HTTP::Cookies
   HTTP::Daemon
   HTTP::Date
   HTTP::Message
   HTTP::Negotiate
   IO::HTML
   IPC::Shareable
   LWP::MediaTypes
   Mozilla::CA
   Net::DNS
   Net::HTTP
   Parallel::ForkManager
   Perl
   Sub::Uplevel
   Test::Fatal
   Test::RequiresInternet
   Test::Warn
   Time::HiRes
   Try::Tiny
   URI
   WWW::RobotRules
   install
   libwww::perl