[FEATURE REQUEST] [UBT] Print how far the build is to output log

[Zeblote]

Just wondering if it's possible to improve this output:

4>Building 2382 actions with 16 processes...
4>  PCLaunch.rc
4>  Module.BuildSettings.cpp
4>  PCH.ImageWrapper.cpp
4>  PCLaunch.rc
4>  UE4Editor-BuildSettings.dll
4>     Creating library ...
4>  PCH.OpenExrWrapper.cpp
4>  SharedPCH.Core.cpp
4>  SharedPCH.CoreUObject.cpp
4>  Module.OpenExrWrapper.cpp
4>  Module.ImageWrapper.cpp
4>  PCH.Core.cpp
4>  Module.SlateCore.gen.cpp
4>  PCH.CoreUObject.cpp
4>  SharedPCH.Slate.NonOptimized.cpp
4>  SharedPCH.Slate.cpp
4>  Module.Core.2_of_10.cpp
4>  Module.RHI.cpp
4>  Module.Core.3_of_10.cpp
4>  Module.Core.5_of_10.cpp
4>  Module.Core.6_of_10.cpp
...

This might be going for several minutes and you have absolutely no idea how far the build is until it suddenly completes.
Can we have this instead?

4>Building 2382 actions with 16 processes...
4>[   1 / 2382]  PCLaunch.rc
4>[   2 / 2382]  Module.BuildSettings.cpp
4>[   3 / 2382]  PCH.ImageWrapper.cpp
4>[   4 / 2382]  PCLaunch.rc
4>[   5 / 2382]  UE4Editor-BuildSettings.dll
4>[   5 / 2382]     Creating library ...
4>[   6 / 2382]  PCH.OpenExrWrapper.cpp
4>[   7 / 2382]  SharedPCH.Core.cpp
4>[   8 / 2382]  SharedPCH.CoreUObject.cpp
4>[   9 / 2382]  Module.OpenExrWrapper.cpp
4>[  10 / 2382]  Module.ImageWrapper.cpp
4>[  11 / 2382]  PCH.Core.cpp
4>[  12 / 2382]  Module.SlateCore.gen.cpp
4>[  13 / 2382]  PCH.CoreUObject.cpp
4>[  14 / 2382]  SharedPCH.Slate.NonOptimized.cpp
4>[  15 / 2382]  SharedPCH.Slate.cpp
4>[  16 / 2382]  Module.Core.2_of_10.cpp
4>[  17 / 2382]  Module.RHI.cpp
4>[  18 / 2382]  Module.Core.3_of_10.cpp
4>[  19 / 2382]  Module.Core.5_of_10.cpp
4>[  20 / 2382]  Module.Core.6_of_10.cpp
...

[Althaen]

Please! This has bugged me forever.

[DamirH]

I imagine you're on the 4.20 preview because for reason unknown they removed the task numbering in 4.20.

[Zeblote]

In 4.19 it used to print at least for the Link actions, now in 4.20 it doesn't print for any.

[Zeblote]

I just went ahead and added this: https://github.com/EpicGames/UnrealEngine/pull/4876

Not sure if there is a better place to put this, that seemed like the most sensible location.