Possible extra dependencies - already packaged
  libcunit1-dev / libcunit1 (optional): for testing >= 2.1
  python 2.7+ / cython 0.19+ : for python bindings
  libjansson4-dev 2.5+ (optional): for testing hdtest/deflatehd and hdtest/inflatehd

Not packaged for debian
  failmalloc: for testing
  libssl-dev: 1.0.3+ (not yet released) needed for ALPN support
  spdylay: for SPDY support >= 1.3.0
