インストール: cpan | Perlの標準的なパッケージマネージャー

sh -eux <<-"EOT"
PKG=cpan VER=2.28 TAG=$VER PKG_VER=$PKG${VER:+-$VER}
LOCAL=~/.local J=$(grep -cs '^processor' /proc/cpuinfo || echo 2)
mkdir -p "$LOCAL/src"
cd "$LOCAL/src"

if command -v git >/dev/null; then
  [ -e $PKG ] || git clone --depth 1 git://github.com/andk/cpanpm $PKG
  cd $PKG
  git fetch --depth 1 ${TAG:+origin tag $TAG}
  git checkout -f ${TAG:-master}
  git clean -dfX
else
  [ -e $PKG_VER ] || wget -O $PKG_VER.tgz https://github.com/andk/cpanpm/archive/$VER.tar.gz
  tar -xf $PKG_VER.*
  cd $PKG_VER
fi

make -kj $J distclean clean || :
[ -e configure ] || [ -e configure.ac ] && autoreconf -is

perl Makefile.PL INSTALL_BASE="$LOCAL/stow/$PKG_VER" \
  INSTALLMAN1DIR="\$(INSTALL_BASE)/share/man/man1" \
  INSTALLMAN3DIR="\$(INSTALL_BASE)/share/man/man3"
make -j $J
make -j $J test
make -j $J install

cd "$LOCAL/stow"
echo $PKG${VER:+-}[0-9]* | xargs -n 1 stow -D
stow $PKG_VER
EOT