depends  autoconf   &&
depends  gperf      &&
depends  pkgconfig  &&
depends  freetype2  &&
depends  automake   &&
depends  libtool    &&
depends  expat      &&

if is_depends_enabled freetype2 libpng; then
  depends libpng
fi &&

if is_depends_enabled freetype2 harfbuzz; then
  depends harfbuzz
fi &&

optional_depends docbook-utils          \
                 "--enable-docs"        \
                 "--disable-docs"       \
                 "Create documentation" &&

if is_depends_enabled $SPELL docbook-utils; then
  depends HTML_TO_TEXT
fi &&
optional_depends ttf-bitstream-vera '' '' 'for a default font'