Hello, I'm trying to compile the new KMyMoney on Ubuntu 20.04 and it's failing with load file missing of ECMAddAppIcon. Below is the output:

software/kmymoney-5.1.3/build]$ cmake .. -Wno-dev -DCMAKE_INSTALL_PREFIX=/usr/ -DECM_DIR=/usr/share/ECM
CMake Error at CMakeLists.txt:1 (include):
include could not find load file:

ECMAddAppIcon

CMake Error at mymoney/payeeidentifier/CMakeLists.txt:18 (generate_export_header):
Unknown CMake command "generate_export_header".

-- Configuring incomplete, errors occurred!

I have the following installed:
$ cmake --version
cmake version 3.16.3

and
extra-cmake-modules is already the newest version (5.68.0-0ubuntu1).

Anyone know how to fix this?

>cmake .. -Wno-dev -DCMAKE_INSTALL_PREFIX=/usr/ -DECM_DIR=/usr/share/ECM

Do you need to pass in the ECM_DIR variable? On my kdesrc-build setup, this variable is automatically set to ECM_DIR:PATH=/home/user/kde/usr/share/ECM/cmake

I would suggest refreshing the build and trying it without this variable.

Thanks for the suggestions. I tried without the -DECM_DIR=/usr/share/ECM/cmake and it still failed; so I deleted all the source and re-extracted. then did the cmake again with -DECM_DIR=/usr/share/ECM and it worked. The make / make install worked just fine too. I know my first attempt was without the -DECM_DIR so thinking that may have set something incomplete? Anyway, all is working.
Thanks.

Looks, like you got hit by the cmake cache What you did is exactly the solution to solve the problem. Congrats.