build fails while downloading external data file

Support
1

It’s been a while since I’ve built VTK, and now I updated to 52157f40f47ce4f5be55f223258f1d7bfefcf60e and tried to build my squeaky clean clone of origin/master. I get a failure that some file cannot be downloaded:

-- Fetching "https://data.kitware.com/api/v1/file/hashsum/SHA512/69f28b8d906844590b9ae02214f0d067fc2fec10519a6ddd9bd5fed1851e059bff29fb8c628d8277a506b4f93578b70bdb278fdf334c93ba82db1d4a1ce43006/download"
-- Fetching "https://www.vtk.org/files/ExternalData/SHA512/69f28b8d906844590b9ae02214f0d067fc2fec10519a6ddd9bd5fed1851e059bff29fb8c628d8277a506b4f93578b70bdb278fdf334c93ba82db1d4a1ce43006"
CMake Error at /opt/cmake-3.14.2/share/cmake-3.14/Modules/ExternalData.cmake:1121 (message):
  

  Object
  SHA512=69f28b8d906844590b9ae02214f0d067fc2fec10519a6ddd9bd5fed1851e059bff29fb8c628d8277a506b4f93578b70bdb278fdf334c93ba82db1d4a1ce43006
  not found at:

    https://data.kitware.com/api/v1/file/hashsum/SHA512/69f28b8d906844590b9ae02214f0d067fc2fec10519a6ddd9bd5fed1851e059bff29fb8c628d8277a506b4f93578b70bdb278fdf334c93ba82db1d4a1ce43006/download ("Unsupported protocol")
    https://www.vtk.org/files/ExternalData/SHA512/69f28b8d906844590b9ae02214f0d067fc2fec10519a6ddd9bd5fed1851e059bff29fb8c628d8277a506b4f93578b70bdb278fdf334c93ba82db1d4a1ce43006 ("Unsupported protocol")
2

Your CMake doesn’t link against an OpenSSL-aware libcurl, so https:// URLs are not allowed. Please update/rebuild your CMake with SSL support.

3

Thanks for the swift reply!