depends  zlib    &&
depends -sub CXX gcc     &&
depends  glib2   &&
depends  libtool &&
optional_depends flac \
                 "" \
                 "" \
                 "For FLAC support" &&

optional_depends libvorbis \
                 "" \
                 "" \
                 "For Vorbis support" &&

optional_depends python \
                 "--enable-printable" \
                 "--disable-printable" \
                 "For printable plugins" &&

optional_depends gtk+2 \
                 "" \
                 "--disable-gtktest" \
                 "For thumbnail support" &&

optional_depends libgnome \
                 "--enable-gnome" \
                 "--disable-gnome" \
                 "Enable gnome support"  &&

optional_depends libmpeg2                       \
                 ""                             \
                 ""                             \
                 "for mpeg2 support" &&

optional_depends gettext                        \
                 "--enable-nls"                 \
                 "--disable-nls"                \
                 "for Native Language Support" &&

optional_depends libgsf \
                 "--enable-gsf" \
                 "--disable-gsf" \
                 "for OLE2 plugin" &&

optional_depends exiv2 \
                 "--enable-exiv2" \
                 "--disable-exiv2" \
                 "for exiv2 support" &&

optional_depends xpdf \
                 "--enable-xpdf" \
                 "--disable-xpdf" \
                 "for xpdf-based extractor"

.