which aclocal
if [ 0 != $? ]; then
    exit 1
fi
aclocal

which autoconf
if [ 0 != $? ]; then
    exit 1
fi
autoconf

which markdown
if [ 0 != $? ]; then
    exit 1
fi
markdown README.md > README

which automake
if [ 0 != $? ]; then
    exit 1
fi
automake --add-missing