Believe the backwards compatible settings is just a message and isn’t the issue here. Epic had changed the compilation previously to not include as much when building https://docs.unrealengine.com/en-US/Programming/BuildTools/UnrealBuildTool/IWYU/index.html That message says it can be suppressed if seeing it is an issue for you.
And there have even been times that it has compiled with decent timing.
Since you’re unwilling to show code and don’t say exactly what you’re doing, maybe you’re running into this or some other issue:
Hi all,
I’ve been working my way through the Unreal Engine C++ Developer course and have lately noticed much longer compile times than usual. I’m in section 3 (the Bull Cow game section) and I’m well past the lecture that explains how to speed up compiles by making a small change to the UnrealHeaderTool.target file (currently lecture #52). I do remember at the time, this sped up my compiles by a lot (from ~20 seconds down to ~4 or 5 seconds when compiling after a new change). Now I noticed a…
Hey everyone,
Is it normal to have the compile times skyrocket once the word list gets added to the game? I’m talking about 3 seconds to compile if the list is 10 words long, vs 51 seconds with all 1000 words.
CPU utilization (AMD Ryzen 3600X) spikes up to 50% for a second and then lowers to 12% for the rest of the the compile… Unreal seems to be trying to use all available threads, but I guess there isn’t much multi-threading to do on going through a list of words
You have to understand, its really difficult if you don’t show code or say all of what you’ve changed or done. Since it does have good speed at times then it should obviously be from what you’re doing.