depends pkgconfig

optional_depends "zlib" "" "" "for ZLIB support"

optional_depends "%JPEG"                \
                 "--with-jpeg"          \
                 "--without-jpeg"       \
                 "for JPEG support"

optional_depends "tiff"                 \
                 "--with-tiff"          \
                 "--without-tiff"       \
                 "for TIFF support"

optional_depends "Python"               \
                 "--with-python"        \
                 "--without-python"     \
                 "for python extension"
