Kde seems to stick to autotools until 3.5.8 and switches to cmake with 4.0.
To spice the thread, here the absolutely pointless speed comparison done a couple of minutes ago on my system building
kmix-3.8.5 (autotools)
real 1m27.553s
user 1m17.888s
sys 0m36.687s
vs.
kmix-4.01 (cmake):
real 0m54.506s
user 1m6.345s
sys 0m11.099s
Any non-pointless opinions about cmake?