D20807: add support for extra cmake finders

[Harald Sitter]

sitter added a dependent revision: D20809: replace manual cerf lookup with pkg-config-assisted finder.

REPOSITORY
  R262 LabPlot

REVISION DETAIL
  https://phabricator.kde.org/D20807

To: sitter
Cc: kde-edu, narvaez, apol
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.kde.org/pipermail/kde-edu/attachments/20190425/d4bd4957/attachment-0001.html>