depends  zlib    &&
depends -sub CXX gcc     &&
depends  glib2   &&

optional_depends gtk+3 \
                 "" \
                 "--disable-gtktest" \
                 "For thumbnail support" &&

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

optional_depends gstreamer-1.0 \
                --with-gstreamer\
                --without-gstreamer\
                 'Build with the GStreamer plugin' &&

optional_depends libgsf \
                 "--enable-gsf" \
                 "--disable-gsf" \
                 "for OLE2(MS Office) plugin" &&


# no config options for these
optional_depends flac       '' ''  "For FLAC support" &&
optional_depends libvorbis  '' ''  "For Vorbis support" &&

optional_depends libarchive '' 'use libarchive' &&
optional_depends JPEG    '' '' 'JPEG support' &&
optional_depends poppler '' '' 'PDF support'  &&
optional_depends tiff    '' '' 'TIFF support' &&
optional_depends vlc     '' '' 'VLC support'