Regularly Slow Compile Time Fix

[rclafferty]

Hi all,

I saw a few people mention they were having issues with a slow compile time even after the fix mentioned in this video (“Solving Slow Compile Times”). I for one have been dealing with 2 years of 2-minute compile times. I just found this link today on a UE4 forum that explains how to fix this:

https://answers.unrealengine.com/questions/18526/extremely-slow-compiling.html

It is similar to the fix mentioned in Eric’s post:

Slow compile time fix? Is this a bad idea

I always have to pause the videos for compiling to catch up, it took forever. Google suggested this fix, any unintended consequences? It seems to have worked, I just changed a word in the warning log and it built in 5 seconds. There is a known issue here that we’re planning to address for Rocket but haven’t gotten to it yet. Basically, UE4 is designed for HUGE games that have hundreds of source files, so the out-of-the-box settings are configured to get the best possible full recompile times …

I hope this helps someone else the way it helped me. It makes a world of difference when I can compile faster.

[Slayer_thegreat]

Thanks for the post this cut my time from about 2 min to 30 sec. Now I can do the fix from the video and hopefully get it down to 10.

One note the compile log said that bFasterWithoutUnity = true; is obsolete so it suggested bUseUnity = false; I tried that and it worked great.