D18866: Use check_symbol_exists instead of check_function_exists

[Dag Andersen]

danders added a comment.


  What about the other ​check_function_exists, should they also be changed?
  Also, do you know when ​check_symbol_exists was introduced?
  We still use cmake 2.8.12.

REPOSITORY
  R8 Calligra

REVISION DETAIL
  https://phabricator.kde.org/D18866

To: heikobecker
Cc: danders, Calligra-Devel-list, dcaliste, cochise, vandenoever