depends g++                      &&
depends pkgconfig                &&
depends  POSTSCRIPT-INTERPRETER  &&
optional_depends imagemagick     '--with-magick'    \
                                 '--without-magick' \
                                 ''                 &&
#optional_depends plotlib         '--with-libplot'   \
#                                 '--without-libplot'\
#                                 'plotting support' &&
optional_depends gd              '' '' ''            &&
optional_depends libpng          '' '' 'PNG support'
