optional_depends "latex2html"                         \
                 "--with-latex2html"                  \
                 "--without-latex2html"               \
                 "to enable latex2html documentation" &&

optional_depends "texlive-texmf"                        \
                 "--with-texlive-texmf"                 \
                 "--without-texlive-texmf"              \
                 "to enable vips image processing"