CMake Error at LZ4-stamp/download-LZ4.cmake:157 (message):
  Each download failed!

    error: downloading 'http://lcgpackages.web.cern.ch/lcgpackages/tarFiles/sources/lz4-v1.7.5.tar.gz' failed
         status_code: 6
         status_string: "Couldn't resolve host name"
         log:
         --- LOG BEGIN ---
         Curl_ipv4_resolve_r failed for lcgpackages.web.cern.ch

  Couldn't resolve host 'lcgpackages.web.cern.ch'

  Closing connection 0

  

         --- LOG END ---
         error: downloading 'http://lcgpackages.web.cern.ch/lcgpackages/tarFiles/sources/lz4-v1.7.5.tar.gz' failed
         status_code: 6
         status_string: "Couldn't resolve host name"
         log:
         --- LOG BEGIN ---
         Curl_ipv4_resolve_r failed for lcgpackages.web.cern.ch

  Couldn't resolve host 'lcgpackages.web.cern.ch'

  Closing connection 0

  

         --- LOG END ---
         error: downloading 'http://lcgpackages.web.cern.ch/lcgpackages/tarFiles/sources/lz4-v1.7.5.tar.gz' failed
         status_code: 6
         status_string: "Couldn't resolve host name"
         log:
         --- LOG BEGIN ---
         Curl_ipv4_resolve_r failed for lcgpackages.web.cern.ch

  Couldn't resolve host 'lcgpackages.web.cern.ch'

  Closing connection 0

  

         --- LOG END ---
         error: downloading 'http://lcgpackages.web.cern.ch/lcgpackages/tarFiles/sources/lz4-v1.7.5.tar.gz' failed
         status_code: 6
         status_string: "Couldn't resolve host name"
         log:
         --- LOG BEGIN ---
         Curl_ipv4_resolve_r failed for lcgpackages.web.cern.ch

  Couldn't resolve host 'lcgpackages.web.cern.ch'

  Closing connection 0

  

         --- LOG END ---
         error: downloading 'http://lcgpackages.web.cern.ch/lcgpackages/tarFiles/sources/lz4-v1.7.5.tar.gz' failed
         status_code: 6
         status_string: "Couldn't resolve host name"
         log:
         --- LOG BEGIN ---
         Curl_ipv4_resolve_r failed for lcgpackages.web.cern.ch

  Couldn't resolve host 'lcgpackages.web.cern.ch'

  Closing connection 0

  

         --- LOG END ---
         error: downloading 'http://lcgpackages.web.cern.ch/lcgpackages/tarFiles/sources/lz4-v1.7.5.tar.gz' failed
         status_code: 6
         status_string: "Couldn't resolve host name"
         log:
         --- LOG BEGIN ---
         Curl_ipv4_resolve_r failed for lcgpackages.web.cern.ch

  Couldn't resolve host 'lcgpackages.web.cern.ch'

  Closing connection 0

  

         --- LOG END ---
         
    


CMake Error at LZ4-stamp/LZ4-download-RelWithDebInfo-impl.cmake:9 (message):
  Command failed (1):

   '/opt/cmake/bin/cmake' '-P' '/home/cea/root-6.12.02/builddir/LZ4-prefix/src/LZ4-stamp/download-LZ4.cmake'