CMake Error at project_tkdnd-stamp/download-project_tkdnd.cmake:27 (message):
  error: downloading
  'http://sourceforge.net/projects/tkdnd/files/TkDND/TkDND%202.8/tkdnd2.8-src.tar.gz'
  failed

    status_code: 35
    status_string: "SSL connect error"
    log:   Trying 216.105.38.13...

  Connected to sourceforge.net (216.105.38.13) port 80 (#0)

  GET /projects/tkdnd/files/TkDND/TkDND%202.8/tkdnd2.8-src.tar.gz HTTP/1.1

  Host: sourceforge.net

  User-Agent: curl/7.44.0

  Accept: */*

  

  HTTP/1.1 301 Moved Permanently

  Server: nginx/1.13.12

  Date: Thu, 13 Dec 2018 10:15:55 GMT

  Content-Type: text/html

  Content-Length: 178

  Connection: keep-alive

  Location:
  https://sourceforge.net/projects/tkdnd/files/TkDND/TkDND%202.8/tkdnd2.8-src.tar.gz


  

  Ignoring the response-body

  [178 bytes data]

  Connection #0 to host sourceforge.net left intact

  Issue another request to this URL:
  'https://sourceforge.net/projects/tkdnd/files/TkDND/TkDND%202.8/tkdnd2.8-src.tar.gz'


  Found bundle for host sourceforge.net: 0x100703210

    Trying 216.105.38.13...

  Connected to sourceforge.net (216.105.38.13) port 443 (#1)

  Server aborted the SSL handshake

  Closing connection 1

  



CMake Error at project_tkdnd-stamp/project_tkdnd-download-RelWithDebInfo-impl.cmake:9 (message):
  Command failed (1):

   '/Applications/CMake.app/Contents/bin/cmake' '-P' '/Users/armandyam/opt/netgen-6/ngsolve-build/netgen/dependencies/src/project_tkdnd-stamp/download-project_tkdnd.cmake'