depends  gcc34   &&
depends  jpeg    &&
depends  libpng  &&
depends  zlib    &&
depends  xaw3d   &&

optional_depends  "xpdf"               \
                  ""                   \
                  ""                   \
                  "for a PDF viewer"   &&

optional_depends  "mozilla"            \
                  ""                   \
                  ""                   \
                  "for a HTML viewer"
