depends -sub CXX gcc          &&
depends pkgconfig    &&
depends ghostscript  &&
optional_depends imagemagick     '--with-magick'    \
                                 '--without-magick' \
                                 ''                 &&
#optional_depends plotlib         '--with-libplot'   \
#                                 '--without-libplot'\
#                                 'plotting support' &&
optional_depends gd              '' '' ''            &&
optional_depends libpng          '' '' 'PNG support' &&
optional_depends plotutils "--with-libplot"          \
                           "--without-libplot"       \
                           "additional formats (svg)"
