testing/cppzmq: fix FTBFS
-- Found Threads: TRUE
CMake Error at tests/CMakeLists.txt:51 (catch_discover_tests):
Unknown CMake command "catch_discover_tests".
-- Configuring incomplete, errors occurred!
See also "/home/buildozer/aports/testing/cppzmq/src/cppzmq-4.7.1/build/CMakeFiles/CMakeOutput.log".
Edited by Leo