tar -xzf groff-1.22.2.tar.gz
cd groff-1.22.2
PAGE=A4 ./configure --prefix=/usr
make
mkdir -p /usr/share/doc/groff-1.22/pdf
make install
ln -sv eqn /usr/bin/geqn
ln -sv tbl /usr/bin/gtbl
cd ..
rm -fr groff-1.22.2