depends libpng &&
depends freetype2 &&
depends gd &&
depends zlib &&
depends curl &&
optional_depends proj \
                 "--with-proj" \
                 "--without-proj" \
                 "projection support" &&
optional_depends agg \
                 "--with-agg" \
                 "--without-agg" \
                 "enable high quality antialiased output for vector data" &&
#optional_depends gdal \
#                 "--with-gdal" \
#                 "--without-gdal" \
#                 "provides access to at least 42 different raster formats" &&
#optional_depends ogr \
#                 "--with-ogr" \
#                 "--without-ogr" \
#                 "provides access to at least 18 different vector formats" &&
optional_depends tiff \
                 "--with-tiff" \
                 "--without-tiff" \
                 "tiff reading support" &&
optional_depends JPEG \
                 "--with-jpeg" \
                 "--without-jpeg" \
                 "JPEG rendering support" 
