depends  autoconf              &&
depends  automake              &&
depends  -sub 'CXX'  gcc       &&
depends  zlib                  &&
depends  libpng                &&
depends  tiff                  &&
depends  JPEG                  &&
depends  -sub 'THREAD'  boost  &&

optional_depends  libx11             \
                  '--with-x'         \
                  '--without-x'      \
                  'for X11 support'  &&

optional_depends  openexr  ''  ''  'for high dynamic-range (HDR) images'  &&
optional_depends  sdl      ''  ''  'for display preview'
