Not enough positional command line arguments specified error

[AlinMedianu]

First of all, I've never used CMake, Clangs libtooling or LLVM, so this error might be an obvious one. I went through the LLVM_SETUP, following all the steps, even adding metareflect/tooling as a subdirectory instead of metareflect/metareflect, generated the project with CMake on windows 10, on visual studio 2019, compiled LLVM, ran it and got this:

LLVM ERROR: CommonOptionsParser: failed to parse command-line arguments. [CommonOptionsParser]: metareflect.exe: Not enough positional command line arguments specified!

Must specify at least 1 positional argument: See: D:\LLVM\build\Debug\bin\metareflect.exe --help

Also, I have set metareflect as the single starting project.
Secondly, I really enjoyed your talk at CppCon 2018 and got inspired to try this out.
Any help with this would be greatly appreciated. Thanks in advance.

[M-Herr]

If you're still interested, this is caused by not supplying a command line argument (i.e. the file you want parsed) to the metareflect tool. When the tool runs it should look something like

./metareflect.exe <path_to_file>