Trial and Error Include fails instantly for every build attempt for Unreal Engine

[jeevcat]

I'm try to use Trial and Error Include on a file in my Unreal Engine project, but it fails instantly for every build attempt with the following error:

1>------ Build started: Project: xxx, Configuration: DebugGame_Editor x64 ------
1>The list of distinct item types for all input files is empty.
1>Parameter name: files
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

I assume it has something to do with the custom build tool that UE4 uses. Is there any way for me to debug the build command that IncludeToolbox is using?

[Wumpf]

Yes, it's looking at MSVC's compiler settings and methods whereas Unreal uses a custom build as far as I know. Not sure how hard it would be to get it to work

[jeevcat]

Would it be possible to have an option to run an arbitrary custom command instead of the usual attempt to compile?

[jeevcat]

Or even to just attempt to build the entire project? Very slow, but there for compatibility?