BUILDPKG - package build tools -> Requirements

    /dev/null
    /dev/stderr

http://www.gnu.org/
    bash (bash)
    fileutils (install, ln, ls, mv, rm, rmdir, sync)
    findutils (find, xargs)
    grep (grep)
    patch (patch)
    sed (sed)
    shellutils (basename, echo, expr, pwd, test)
    tar (tar)
    texinfo (install-info)
    textutils (cut, expand, tr)

various
    mawk or gawk (awk)
    binutils (ranlib, strip)
    file (file)
    gzip (gzip)
    which (which)

