If CMAKE_MINIMUM_REQUIRED_VERSION is not set because no
cmake_minimum_required() call is present this line can lead to an error as that
string is empty so too few arguments are passed to if():

See also "/var/tmp/paludis/build/kde-krdc-15.08.0/work/build/CMakeFiles/CMakeOutput.log".
See also "/var/tmp/paludis/build/kde-krdc-15.08.0/work/build/CMakeFiles/CMakeError.log".
CMake Error at /usr/share/cmake/Modules/FindPkgConfig.cmake:112 (elseif):
  given arguments:

    "VERSION_LESS" "3.1"

  Unknown arguments specified
Call Stack (most recent call first):
  /usr/share/cmake/Modules/FindPkgConfig.cmake:501 (_pkgconfig_parse_options)
  /usr/share/cmake/Modules/FindOpenSSL.cmake:43 (pkg_check_modules)