I was Irssi maintainer but just compiled for another user. As noted it works in graphics, never tested in TTY. Forum member hiro indicated a newer Irssi was available and was planning to submit an update, he wil be new maintainer. Seems repo gets updated every 2nd Sunday, tomorrow may be an updated Irssi in the repository.
Looking at old build notes, perl5 was already added as a dependency but there may be a Perl issue, see paste below. I am not booted into TC at present and can't confirm correct install directory for perl5: /usr/local/lib/perl5/i486-linux.
http://www.irssi.org/
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download irssi-08.17.tar.gz to /tmp
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cd /tmp
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tar xvf irssi-08.17.tar.gz
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cd /tmp/irssi-08.17/
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tce-load -i compiletc squashfs-tools perl5 openssl-dev glib2-dev
note: notes indicate v2.6 required but worked with TC 6 glib2 v2.4
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CC="gcc -march=i486 -mtune=i686 -Os -pipe" CXX="g++ -march=i486 -mtune=i686 -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --disable-static --localstatedir=/var
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configure results:
Building text frontend ........... : yes, using terminfo
Building irssi bot ............... : no
Building irssi proxy ............. : no
Building with module support ..... : yes
Building with Perl support ....... : static (in irssi binary)
Perl library directory ........... : /usr/local/lib/perl5/i486-linux
- NOTE: This was automatically set to the same directory you gave with
--prefix. If you want the perl libraries to install to their 'correct'
path, you'll need to give --with-perl-lib=site option to configure.
Anyway, installing perl to this directory should work just as well.
Install prefix ................... : /usr/local
Building with IPv6 support ....... : yes
Building with SSL support ........ : yes
Building with 64bit DCC support .. : yes
Building with garbage collector .. : no
Building with DANE support ....... : no
Building with true color support.. : no
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make
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mkdir /tmp/irssi
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sudo make DESTDIR=/tmp/irssi install-strip
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cd /tmp
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sudo chown -R root:root /tmp/irssi
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mksquashfs /tmp/irssi irssi.tcz
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touch irssi.tcz.dep
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echo -e "perl5.tcz \nopenssl.tcz \nglib2.tcz \nncurses.tcz" >> irssi.tcz.dep
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cp irssi.tcz irssi.tcz.dep /etc/sysconfig/tcedir/optional/
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As noted in the paste above, there may be a Perl issue that needs more investigation, hopefully already addressed in the new build. If not use Irssi in graphics for now and report any ongoing issues after you update to latest release.