depends  zlib     &&
depends  tiff     &&
depends  jpeg     &&
depends  gtk+     &&
depends  lcms     &&
depends  openexr  &&

optional_depends  gutenprint              \
                  '--enable-print'        \
                  '--disable-print'       \
                  'for printing support'  &&

optional_depends  python                          \
                  ''                              \
                  '--without-python'              \
                  'for Python scripting support'
